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Mounjaro (Tirzepatide): Uses, Side Effects and Dosage

Updated:
Facts
Status:
Prescription (Rx) Boxed warning
Strength:
2.5 mg/0.5 mL, 4.17 mg/mL, 8.33 mg/mL, 12.5 mg/mL, 16.7 mg/mL, 20.8 mg/mL, 25 mg/mL, 5 mg/0.5 mL, 7.5 mg/0.5 mL, 10 mg/0.5 mL, 12.5 mg/0.5 mL, 15 mg/0.5 mL
Other brand names:
Active ingredient:

Patient information: uses, side effects, how to take - Mounjaro

What is the most important information I should know about MOUNJARO?

MOUNJARO may cause serious side effects, including:

  • Possible thyroid tumors, including cancer. Tell your healthcare provider if you get a lump or swelling in your neck, hoarseness, trouble swallowing, or shortness of breath. These may be symptoms of thyroid cancer. In studies with rats, MOUNJARO and medicines that work like MOUNJARO caused thyroid tumors, including thyroid cancer. It is not known if MOUNJARO will cause thyroid tumors, or a type of thyroid cancer called medullary thyroid carcinoma (MTC) in people.
  • Do not use MOUNJARO if you or any of your family have ever had a type of thyroid cancer called medullary thyroid carcinoma (MTC), or if you have an endocrine system condition called Multiple Endocrine Neoplasia syndrome type 2 (MEN 2).

What is MOUNJARO?

  • MOUNJARO is an injectable prescription medicine that is used:

    • along with diet and exercise to improve blood sugar (glucose) in adults and children 10 years of age and older with type 2 diabetes mellitus.
    • to reduce the risk of major cardiovascular events such as heart attack, stroke, or death in adults with type 2 diabetes mellitus who are at high risk for these events.
  • It is not known if MOUNJARO is safe and effective for use in children under 10 years of age.

Do not use MOUNJARO if:

  • you or any of your family have ever had a type of thyroid cancer called MTC or if you have an endocrine system condition called MEN 2.
  • you have had a serious allergic reaction to tirzepatide or any of the ingredients in MOUNJARO. See the end of this Medication Guide for a complete list of ingredients in MOUNJARO. See " What are the possible side effects of MOUNJARO? " for symptoms of a serious allergic reaction.

Before using MOUNJARO, tell your healthcare provider about all of your medical conditions, including if you:

  • have or have had problems with your pancreas.
  • have severe problems with your stomach, such as slowed emptying of your stomach (gastroparesis) or problems with digesting food.
  • have a history of diabetic retinopathy.
  • are scheduled to have surgery or other procedures that use anesthesia or deep sleepiness (deep sedation).
  • are pregnant or plan to become pregnant. It is not known if MOUNJARO will harm your unborn baby. Tell your healthcare provider if you become pregnant while using MOUNJARO.

    • Birth control pills by mouth may not work as well while using MOUNJARO. If you take birth control pills by mouth, your healthcare provider may recommend another type of birth control for 4 weeks after you start MOUNJARO and for 4 weeks after each increase in your dose of MOUNJARO. Talk to your healthcare provider about birth control methods that may be right for you while using MOUNJARO.
  • are breastfeeding or plan to breastfeed. MOUNJARO may pass into your breast milk. Talk to your healthcare provider about the best way to feed your baby while using MOUNJARO.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. MOUNJARO may affect the way some medicines work, and some medicines may affect the way MOUNJARO works.

Before using MOUNJARO, talk to your healthcare provider about low blood sugar and how to manage it. Tell your healthcare provider if you are taking other medicines to treat diabetes including insulin or sulfonylureas.

Know the medicines you take. Keep a list of them to show your healthcare provider and pharmacist when you get a new medicine.

How should I use MOUNJARO?

  • Read the Instructions for Use that comes with MOUNJARO.
  • Use MOUNJARO exactly as your healthcare provider tells you to.
  • Your healthcare provider should show you how to prepare and inject your dose of MOUNJARO before injecting for the first time.
  • A caregiver may give you MOUNJARO injections or you may self-inject if a healthcare provider determines that it is appropriate.
  • Children should not inject themselves with MOUNJARO KwikPen. An adult caregiver should give a child his or her injections with MOUNJARO KwikPen.
  • Self-injection is not recommended for people who are visually impaired.
  • If using MOUNJARO vials, always use a new syringe and needle for each injection.
  • Inject MOUNJARO under the skin (subcutaneously) of your stomach (abdomen), thigh, or another person should inject in the back of the upper arm. Do not inject MOUNJARO into a muscle (intramuscularly) or vein (intravenously).
  • Use MOUNJARO 1 time each week, at any time of the day.
  • You may change the day of the week you use MOUNJARO as long as the time between the 2 doses is at least 3 days (72 hours).
  • If you miss a dose of MOUNJARO, take the missed dose as soon as possible within 4 days (96 hours) after the missed dose. If more than 4 days have passed, skip the missed dose and take your next dose on the regularly scheduled day. Do not take 2 doses of MOUNJARO within 3 days of each other.
  • MOUNJARO may be taken with or without food.

  • Do not mix insulin and MOUNJARO together in the same injection.
  • You may give an injection of MOUNJARO and insulin in the same body area (such as your stomach area), but not right next to each other.
  • Change (rotate) your injection site with each weekly injection. Do not use the same site for each injection.
  • If you take too much MOUNJARO, call your healthcare provider or Poison Help line at 1-800-222-1222 or go to the nearest hospital emergency room right away.

What are the possible side effects of MOUNJARO?

MOUNJARO may cause serious side effects, including:

  • See “What is the most important information I should know about MOUNJARO?”
  • inflammation of your pancreas (pancreatitis). Stop using MOUNJARO and call your healthcare provider right away if you have severe pain in your stomach area (abdomen) that will not go away, with or without nausea or vomiting. Sometimes you may feel the pain from your abdomen to your back.
  • low blood sugar (hypoglycemia). Your risk for getting low blood sugar may be higher if you use MOUNJARO with another medicine that can cause low blood sugar, such as a sulfonylurea or insulin.

    Signs and symptoms of low blood sugar may include:

  • dizziness or light-headedness
  • sweating
  • confusion or drowsiness
  • headache
  • blurred vision
  • slurred speech
  • shakiness
  • fast heartbeat
  • anxiety, irritability, or mood changes
  • hunger
  • weakness
  • feeling jittery
  • serious allergic reactions. Stop using MOUNJARO and get medical help right away if you have any symptoms of a serious allergic reaction including:
  • swelling of your face, lips, tongue, or throat
  • problems breathing or swallowing
  • severe rash or itching
  • fainting or feeling dizzy
  • very rapid heartbeat
  • dehydration leading to kidney problems. Diarrhea, nausea, and vomiting may cause a loss of fluids (dehydration) which may cause kidney problems. It is important for you to drink fluids to help reduce your chance of dehydration. Tell your healthcare provider right away if you have nausea, vomiting, or diarrhea that does not go away.
  • severe stomach problems. Stomach problems, sometimes severe, have been reported in people who use MOUNJARO. Tell your healthcare provider if you have stomach problems that are severe or will not go away.
  • changes in vision. Tell your healthcare provider if you have changes in vision during treatment with MOUNJARO.
  • gallbladder problems. Gallbladder problems have happened in some people who use MOUNJARO. Tell your healthcare provider right away if you get symptoms of gallbladder problems which may include:
  • pain in your upper stomach (abdomen)
  • fever
  • yellowing of skin or eyes (jaundice)
  • clay-colored stools
  • food or liquid getting into the lungs during surgery or other procedures that use anesthesia or deep sleepiness (deep sedation). MOUNJARO may increase the chance of food getting into your lungs during surgery or other procedures. Tell all your healthcare providers that you are taking MOUNJARO before you are scheduled to have surgery or other procedures.

The most common side effects of MOUNJARO include:

  • nausea
  • diarrhea
  • decreased appetite
  • vomiting
  • constipation
  • indigestion
  • stomach (abdominal) pain

Talk to your healthcare provider if you have any side effect that bothers you or that does not go away. These are not all the possible side effects of MOUNJARO. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store MOUNJARO?

  • Store MOUNJARO in the original carton to protect it from light.
  • Do not freeze MOUNJARO. Do not use MOUNJARO if frozen.
  • Store each single-dose pen or single-dose vial in the refrigerator between 36⁰F to 46⁰F (2⁰C to 8⁰C). If needed, each single-dose pen or single-dose vial can be stored at room temperature up to 86⁰F (30⁰C) for up to a total of 21 days. Throw away single-dose pen or single-dose vial after a total of 21 days at room temperature.
  • Store multi-dose vial or single-patient-use KwikPen in the refrigerator between 36°F to 46°F (2°C to 8°C) or at room temperature [up to 86°F (30°C)]. Throw away the multi-dose vial or single-patient-use KwikPen after a total of 30 days at room temperature, 30 days after first use, or after taking 4 weekly doses, even if it still has medicine in it.

Keep MOUNJARO and all medicines out of the reach of children.

General information about the safe and effective use of MOUNJARO.

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use MOUNJARO for a condition for which it was not prescribed. Do not give MOUNJARO to other people, even if they have the same symptoms you have. It may harm them. You can ask your pharmacist or healthcare provider for information about MOUNJARO that is written for health professionals.

What are the ingredients in MOUNJARO?

Active ingredient: tirzepatide

Inactive ingredients: sodium chloride, sodium phosphate dibasic heptahydrate, and water for injection. Benzyl alcohol, glycerin, and phenol are also inactive ingredients in the multi-dose vial and single-patient-use KwikPen. Hydrochloric acid solution and/or sodium hydroxide solution may have been added to adjust the pH.

MOUNJARO® and KwikPen® are registered trademarks of Eli Lilly and Company.

Marketed by: Lilly USA, LLC Indianapolis, IN 46285, USA

Copyright © 2022, 2026, Eli Lilly and Company. All rights reserved.

For more information, go to www.MOUNJARO.com or call 1-800-545-5979.

MOU-0010-MG-20260827

Mounjaro Single-Dose Pen Instructions for Use

INSTRUCTIONS FOR USE

MOUNJARO® (mown-JAHR-OH)

(tirzepatide)

injection, for subcutaneous use

2.5 mg/0.5 mL single-dose pen

5 mg/0.5 mL single-dose pen

7.5 mg/0.5 mL single-dose pen

10 mg/0.5 mL single-dose pen

12.5 mg/0.5 mL single-dose pen

15 mg/0.5 mL single-dose pen

use 1 time each week

Important information you need to know before injecting MOUNJARO

Read this Instructions for Use and the Medication Guide before using your MOUNJARO Pen and each time you get a refill. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or treatment.

Talk to your healthcare provider about how to inject MOUNJARO the right way.

  • MOUNJARO is a single-dose prefilled pen.
  • MOUNJARO is used 1 time each week.
  • Inject under the skin (subcutaneously) only.
  • You or another person can inject into your stomach (abdomen) or thigh.
  • Another person can inject into the back of your upper arm.

Guide to parts

Preparing to inject MOUNJARO

Remove the Pen from the refrigerator.

Leave the gray base cap on until you are ready to inject.

Check the Pen label to make sure you have the right medicine and dose, and that it has not expired.

Inspect the Pen to make sure that it is not damaged.

Make sure the medicine:
  • is not frozen
  • is not cloudy
  • is colorless to slightly yellow
  • does not have particles
Wash your hands.

Step

1

Choose your injection site

Your healthcare provider can help you choose the injection site that is best for you.

You or another person can inject the medicine in your stomach (abdomen) or thigh.

Another person should give you the injection in the back of your upper arm.

Change (rotate) your injection site each week.

You may use the same area of your body but be sure to choose a different injection site in that area.

Step

2

Pull off the gray base cap

Make sure the Pen is locked.

Do not unlock the Pen until you place the clear base on your skin and are ready to inject.

Pull the gray base cap straight off and throw it away in your household trash.

Do not put the gray base cap back on – this could damage the needle.

Do not touch the needle.

Step

3

Place clear base on skin, then unlock
Place the clear base flat against your skin at the injection site.
Unlock by turning the lock ring.

Step

4

Press and hold up to 10 seconds

Press and hold the purple injection button for up to 10 seconds.

Listen for:

  • First click = injection started
  • Second click = injection completed
You will know your injection is complete when the gray plunger is visible.
After your injection, place the used Pen in a sharps container.
See Disposing of your used Pen.

Disposing of your used Pen

  • Put your used Pen in an FDA-cleared sharps disposal container right away after use. Do not throw away (dispose of) Pens in your household trash.
  • If you do not have an FDA-cleared sharps disposal container, you may use a household container that is:

    • made of a heavy-duty plastic,
    • can be closed with a tight-fitting, puncture-resistant lid, without sharps being able to come out,
    • upright and stable during use,
    • leak-resistant, and
    • properly labeled to warn of hazardous waste inside the container.
  • When your sharps disposal container is almost full, you will need to follow your community guidelines for the right way to dispose of your sharps disposal container. There may be state or local laws about how you should throw away used needles and syringes. For more information about safe sharps disposal, and for specific information about sharps disposal in the state that you live in, go to the FDA's website at: http://www.fda.gov/safesharpsdisposal.
  • Do not recycle your used sharps disposal container.

Storage and handling

  • Store your Pen in the refrigerator between 36°F to 46°F (2°C to 8°C).
  • You may store your Pen at room temperature up to 86°F (30°C) for up to a total of 21 days.
  • Discard the Pen after a total of 21 days at room temperature.
  • Do not freeze your Pen. If the Pen has been frozen, throw the Pen away and use a new Pen.
  • Store your Pen in the original carton to protect your Pen from light.
  • The Pen has glass parts. Handle it carefully. If you drop the Pen on a hard surface, do not use it. Use a new Pen for your injection.
  • Keep your MOUNJARO Pen and all medicines out of the reach of children.

Commonly asked questions

What if I see air bubbles in my Pen?

Air bubbles are normal.

What if my Pen is not at room temperature?

It is not necessary to warm the Pen to room temperature.

What if I unlock the Pen and press the purple injection button before pulling off the gray base cap?

Do not remove the gray base cap. Throw away the Pen and get a new Pen.

What if there is a drop of liquid on the tip of the needle when I remove the gray base cap?

A drop of liquid on the tip of the needle is normal. Do not touch the needle.

Do I need to hold the injection button down until the injection is complete?

This is not necessary, but it may help you keep the Pen steady against your skin.

I heard more than 2 clicks during my injection—2 loud clicks and 1 soft one. Did I get my complete injection?

Some people may hear a soft click right before the second loud click. That is the normal operation of the Pen. Do not remove the Pen from your skin until you hear the second loud click.

I am not sure if my Pen worked the right way.

Check to see if you have received your dose. Your dose was delivered the right way if the gray plunger is visible. Also, see Step 4 of the instructions.

If you do not see the gray plunger, contact Lilly at 1-800-Lilly-Rx (1-800-545-5979) for further instructions. Until then, store your Pen safely to avoid an accidental needle stick.

What if there is a drop of liquid or blood on my skin after my injection?

This is normal. Press a cotton ball or gauze over the injection site. Do not rub the injection site.

Other information

  • If you have vision problems, do not use your Pen without help from a person trained to use the MOUNJARO Pen.

Where to learn more

  • If you have questions or problems with your MOUNJARO Pen, contact Lilly at 1-800-Lilly-Rx (1-800-545-5979) or call your healthcare provider.
  • For more information about the MOUNJARO Pen, visit our website at www.mounjaro.com.

Scan this code to launch

www.mounjaro.com

Marketed by:

Lilly USA, LLC

Indianapolis, IN 46285, USA

MOUNJARO is a registered trademark of Eli Lilly and Company.

Copyright © 2022, 2026, Eli Lilly and Company. All rights reserved.

This Instructions for Use has been approved by the U.S. Food and Drug Administration. Revised: April 2026

MOU-0004-IFU-20260422

Mounjaro Single-Dose Vial Instructions for Use

INSTRUCTIONS FOR USE

MOUNJARO® [mown-JAHR-OH]

(tirzepatide)

injection, for subcutaneous use

2.5 mg/0.5 mL single-dose vial

5 mg/0.5 mL single-dose vial

7.5 mg/0.5 mL single-dose vial

10 mg/0.5 mL single-dose vial

12.5 mg/0.5 mL single-dose vial

15 mg/0.5 mL single-dose vial

Important information you need to know before injecting MOUNJARO

Read this Instructions for Use before you start taking MOUNJARO and each time you get a new vial. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or your treatment.

Do not share your needles or syringes with other people. You may give other people a serious infection or get a serious infection from them.

Talk to your healthcare provider about how to inject MOUNJARO the right way.

  • MOUNJARO is a single-dose vial.
  • MOUNJARO is used 1 time each week.
  • Inject under the skin (subcutaneously) only.
  • You or another person may inject into your stomach (abdomen) or thigh.
  • Another person can inject into the back of your upper arm.

Gather supplies needed to give your injection

  • 1 single-dose MOUNJARO vial
  • 1 syringe and 1 needle, supplied separately (for example, use a 1 mL syringe and needle as recommended by your healthcare provider)
  • 1 alcohol swab
  • gauze
  • 1 sharps container for throwing away used needles and syringes. See “Disposing of used needles and syringes” at the end of these instructions.

Guide to parts

Vial

Needle and Syringe (not included)

Note: The needle and syringe are not included. The needle and syringe recommended by your healthcare provider may look different than the needle and syringe in this Instructions for Use.

Preparing to inject MOUNJARO

Remove the vial from the refrigerator.

Check the vial label to make sure you have the right medicine and dose, and that it has not expired.

Make sure the medicine:

  • is not frozen
  • is not cloudy
  • is colorless to slightly yellow
  • does not have particles

Always use a new syringe and needle for each injection to prevent infections and blocked needles. Do not reuse or share your syringes or needles with other people. You may give other people a serious infection or get a serious infection from them.

Wash your hands with soap and water.

Step 1:

Pull off the plastic protective cap. Do not remove the rubber stopper.

Step 2:

Wipe the rubber stopper with an alcohol swab.

Step 3:

Remove the outer wrapping from the syringe.

Step 4:

Remove the outer wrapping from the needle.

The syringe that your healthcare provider recommended may have a pre-attached needle. If the needle is attached, skip to step 6.

Step 5:

Place the needle on top of the syringe and turn until it is tight and firmly attached.

Step 6:

Remove the needle shield by pulling straight off.

Step 7:

Hold the syringe in one hand with the needle pointing up. With the other hand pull down on the plunger until the plunger tip reaches the line on the syringe indicating that 0.5 mL of air has been drawn into the syringe.

Step 8:

Push the needle through the rubber stopper of the vial.

Step 9:

Push the plunger all the way in. This puts air into the vial and makes it easier to pull the solution from the vial.

Step 10:

Turn the vial and syringe upside down. Make sure that the tip of the needle is in the liquid and slowly pull the plunger down until the plunger tip is past the 0.5 mL line.

If there are air bubbles, tap the syringe gently a few times to let any air bubbles rise to the top.

Step 11:

Slowly push the plunger up until the plunger tip reaches the 0.5 mL line.

Step 12:

Pull the syringe out of the rubber stopper of the vial.

Injecting MOUNJARO

  • Inject exactly as your healthcare provider has shown you. Your healthcare provider should tell you if you should pinch the skin before injecting.
  • Change (rotate) your injection site within the area you choose for each dose to reduce your risk of getting lipodystrophy (pits in skin or thickened skin) and localized cutaneous amyloidosis (skin with lumps) at the injection sites.
  • Do not inject where the skin has pits, is thickened, or has lumps.
  • Do not inject where the skin is tender, bruised, scaly or hard, or into scars or damaged skin.
  • Do not mix MOUNJARO with any other medicine.
  • Do not inject MOUNJARO in the same injection site used for other medicines.

Step 13:

Choose your injection site.

You can inject MOUNJARO under the skin (subcutaneously) of your stomach area (abdomen) or thighs.

Someone else can inject in your stomach area, thighs, or the back of the upper arms.

Step 14:

Insert the needle into your skin.

Step 15:

Push down on the plunger to inject your dose.

The needle should stay in your skin for at least 5 seconds to make sure you have injected all of your dose.

Step 16:

Pull the needle out of your skin.

  • If you see blood after you take the needle out of your skin, press the injection site with a piece of gauze. Do not rub the area.
  • Do not recap the needle. Recapping the needle can lead to a needle stick injury.

Disposing of used needles and syringes

  • Put your used needle and syringe in an FDA-cleared sharps disposal container right away after use. Do not throw away (dispose of) loose needles and syringes in your household trash.
  • If you do not have an FDA-cleared sharps disposal container, you may use a household container that is:

    • made of a heavy-duty plastic,
    • can be closed with a tight-fitting, puncture-resistant lid, without sharps being able to come out,
    • upright and stable during use,
    • leak-resistant, and
    • properly labeled to warn of hazardous waste inside the container.
  • When your sharps disposal container is almost full, you will need to follow your community guidelines for the right way to dispose of your sharps disposal container. There may be state or local laws about how you should throw away used needles and syringes. For more information about safe sharps disposal, and for specific information about sharps disposal in the state that you live in, go to the FDA’s website at:

    http://www.fda.gov/safesharpsdisposal.

  • Do not dispose of your used sharps disposal container in your household trash unless your community guidelines permit this. Do not recycle your used sharps disposal container.

Storing MOUNJARO

  • Store all unopened vials in the refrigerator at 36°F to 46°F (2°C to 8°C).
  • You may store the unopened vial at room temperature up to 86°F (30°C) for up to a total of 21 days.
  • Discard the vial after a total of 21 days at room temperature.
  • Do not freeze. Do not use if MOUNJARO has been frozen.
  • Store the vial in the original carton to protect from light.
  • Throw away all opened vials after use, even if there is medicine left in the vial.

Keep MOUNJARO vials, syringes, needles, and all medicines out of the reach of children.

If you have any questions or problems with your MOUNJARO, contact Lilly at 1-800-Lilly-Rx (1-800-545-5979) or call your healthcare provider for help.

Marketed by:

Lilly USA, LLC

Indianapolis, IN 46285, USA

MOUNJARO is a registered trademark of Eli Lilly and Company.

Copyright © 2023, 2026, Eli Lilly and Company. All rights reserved.

MON-VL-0003-IFU-20260422

This Instructions for Use has been approved by the U.S. Food and Drug Administration.

Revised: April 2026

Mounjaro Multiple-Dose Vial Instructions for Use

INSTRUCTIONS FOR USE

MOUNJARO ® [mown-JAHR-OH]

(tirzepatide)

injection, for subcutaneous use

Multi-dose vial

Each vial contains 4 doses, one dose taken weekly.

Important information you need to know before injecting MOUNJARO

Read this Instructions for Use before you start taking MOUNJARO and each time you get a new vial. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or your treatment.

Do not share your needles or syringes with other people.

Talk to your healthcare provider about how to inject MOUNJARO the right way.

  • MOUNJARO is a multi-dose vial. The vial contains 4 doses, one dose taken weekly.
  • Inject 0.6 mL in a single weekly injection, under the skin (subcutaneously).
  • You or another person may inject into your stomach (abdomen) or thigh.
  • Another person can inject into the back of your upper arm.

Gather supplies needed to give your injection

  • 1 multi-dose MOUNJARO vial
  • 1 syringe and 1 needle, supplied separately (for example, use a 1 mL syringe and needle as recommended by your healthcare provider)
  • 1 alcohol swab
  • gauze
  • 1 sharps container for throwing away used needles and syringes. See “Disposing of used needles and syringes” at the end of these instructions.
Guide to parts
VialNeedle and Syringe (not included)

Note: The needle and syringe are not included. The needle and syringe recommended by your healthcare provider may look different than the needle and syringe in this Instructions for Use.

Preparing to inject MOUNJARO

Check the vial label to make sure you have the right medicine and dose, and that it has not expired.

Make sure the medicine:

  • is not frozen
  • is colorless to slightly yellow
  • is not cloudy
  • does not have particles

Always use a new syringe and needle for each injection to prevent infections and blocked needles. Do not reuse or share your syringes or needles with other people. You may give other people a serious infection or get a serious infection from them.

Wash your hands with soap and water.

Step 1:

If you are using a new vial, pull off the plastic protective cap. Do not remove the rubber stopper.

Step 2:

Wipe the rubber stopper with an alcohol swab.

Step 3:

Remove the outer wrapping from the syringe.

Step 4:

Remove the outer wrapping from the needle.

The syringe that your healthcare provider recommended may have a pre-attached needle. If the needle is attached, skip to step 6.

Step 5:

Place the needle on top of the syringe and turn until it is tight and firmly attached.

Step 6:

Remove the needle shield by pulling straight off.

Step 7:

Hold the syringe in one hand with the needle pointing up. With the other hand pull down on the plunger until the plunger tip reaches the line on the syringe indicating that 0.6 mL of air has been drawn into the syringe.

Step 8:

Push the needle through the rubber stopper of the vial.

Step 9:

Push the plunger all the way in. This puts air into the vial and makes it easier to pull the solution from the vial.

Step 10:

Turn the vial and syringe upside down. Make sure that the tip of the needle is in the liquid and slowly pull the plunger down until the plunger tip is past the 0.6 mL line.

If there are air bubbles, tap the syringe gently a few times to let any air bubbles rise to the top.

Step 11:

Slowly push the plunger up until the plunger tip reaches the 0.6 mL line.

Step 12:

Pull the syringe out of the rubber stopper of the vial.

Injecting MOUNJARO

  • Inject exactly as your healthcare provider has shown you. Your healthcare provider should tell you if you should pinch the skin before injecting.
  • Change (rotate) your injection site within the area you choose for each dose to reduce your risk of getting lipodystrophy (pits in skin or thickened skin) and localized cutaneous amyloidosis (skin with lumps) at the injection sites.
  • Do not inject where the skin has pits, is thickened, or has lumps.
  • Do not inject where the skin is tender, bruised, scaly or hard, or into scars or damaged skin.
  • Do not mix MOUNJARO with any other medicine.
  • Do not inject MOUNJARO in the same injection site used for other medicines.

Step 13:

Choose your injection site.

You can inject MOUNJARO under the skin (subcutaneously) of your stomach area (abdomen) or thighs.

Someone else can inject in your stomach area, thighs, or the back of the upper arms.

Step 14:

Insert the needle into your skin.

Step 15:

Push down on the plunger to inject your dose.

The needle should stay in your skin for at least 5 seconds to make sure you have injected all of your dose.

Step 16:

Pull the needle out of your skin.

  • If you see blood after you take the needle out of your skin, press the injection site with a piece of gauze. Do not rub the area.
  • Do not recap the needle. Recapping the needle can lead to a needle stick injury.

Disposing of used needles and syringes

  • Put your used needle and syringe in an FDA-cleared sharps disposal container right away after use. Do not throw away (dispose of) loose needles and syringes in your household trash.
  • If you do not have an FDA-cleared sharps disposal container, you may use a household container that is:

    • made of a heavy-duty plastic,
    • can be closed with a tight-fitting, puncture-resistant lid, without sharps being able to come out,
    • upright and stable during use,
    • leak-resistant, and
    • properly labeled to warn of hazardous waste inside the container.
  • When your sharps disposal container is almost full, you will need to follow your community guidelines for the right way to dispose of your sharps disposal container. There may be state or local laws about how you should throw away used needles and syringes. For more information about safe sharps disposal, and for specific information about sharps disposal in the state that you live in, go to the FDA's website at:

    http://www.fda.gov/safesharpsdisposal.

  • Do not dispose of your used sharps disposal container in your household trash unless your community guidelines permit this. Do not recycle your used sharps disposal container.

Storing MOUNJARO

  • Do not freeze. Do not use if MOUNJARO has been frozen.
  • Store MOUNJARO in the original carton. Keep away from light.

Unopened vial:

  • Store unopened vial in the refrigerator at 36°F to 46°F (2°C to 8°C). It can be used until the expiration date on the label if kept in the refrigerator.
  • If stored at room temperature [up to 86°F (30°C)], throw away unopened vial after 30 days.

After vial has been opened:

  • Store opened (in-use) vial in the original carton in the refrigerator at 36°F to 46°F (2°C to 8°C) or at room temperature [up to 86°F (30°C)]. Throw away opened vial after a total of 30 days at room temperature, 30 days after first use, or after taking 4 weekly doses, even if there is medicine left in it.

Keep MOUNJARO vials, syringes, needles, and all medicines out of the reach of children.

If you have any questions or problems with your MOUNJARO, contact Lilly at 1-800-Lilly-Rx (1-800-545-5979) or call your healthcare provider for help.

Marketed by:

Lilly USA, LLC

Indianapolis, IN 46285, USA

MOUNJARO is a registered trademark of Eli Lilly and Company.

Copyright © 2026, Eli Lilly and Company. All rights reserved.

MON-MDV-0001-IFU-20260107

This Instructions for Use has been approved by the U.S. Food and Drug Administration.

Revised: January 2026

Mounjaro KwikPen Multi-Dose Pen Instructions for Use

INSTRUCTIONS FOR USE

MOUNJARO® [mown-JAHR-OH] KwikPen ® [KWIHK pehn]

(tirzepatide)

injection, for subcutaneous use

multi-dose single-patient-use prefilled pen

Each pen contains 4 fixed doses, one dose taken weekly.

This Instructions for Use contains information on how to inject MOUNJARO.

Important information you need to know before injecting MOUNJARO

Read this INSTRUCTIONS FOR USE before you start injecting MOUNJARO KwikPen (Pen) and each time you get another new Pen. There may be new information. This information does not take the place of talking to your healthcare provider about your medical condition or your treatment.

  • MOUNJARO KwikPen is a disposable multi-dose single-patient-use prefilled pen. The Pen contains 4 fixed doses, one dose taken weekly. Inject a single weekly injection, under the skin (subcutaneously).
  • For your weekly dose, you need to turn the dose knob all the way until it stops AND the icon is in dose window.
  • After 4 doses, throw away (discard) the Pen, including the unused medicine. The Pen will prevent you from dialing a full dose after you have given yourself 4 weekly doses. Do not inject the leftover medicine. Do not transfer MOUNJARO from your Pen into a syringe.
  • Do not share your MOUNJARO Pen with other people, even if the pen needle has been changed. You may give other people a serious infection or get a serious infection from them.
  • People who are blind or have vision problems should not use the Pen without help from a person trained to use the Pen.
Guide to parts

Parts of the MOUNJARO Pen

Supplies needed to give your injection
  • MOUNJARO KwikPen
  • KwikPen-compatible Pen Needle (not included)
  • Alcohol swab
  • Gauze or cotton ball
  • FDA-cleared sharps disposal container or household container
Preparing to inject MOUNJARO

Step 1:

  • Wash your hands with soap and water.

Step 2:

  • Pull the Pen cap straight off.
  • Inspect the Pen and label. Do not use if:

    • the medicine name or dose strength does not match your prescription.
    • the Pen is expired (EXP) or looks damaged.
    • the medicine has been frozen, has particles, is cloudy, or is discolored. MOUNJARO should be colorless to slightly yellow.

Step 3:

  • Wipe the red inner seal with an alcohol swab.

Step 4:

  • Select a new pen needle. Always use a new pen needle for each injection to help prevent infections and blocked needles.
  • Pull off the paper tab from the outer needle shield.

Step 5:

  • Push the capped pen needle straight onto the Pen and twist the pen needle on until it is tight.

Step 6:

  1. 1. Pull off the outer needle shield and keep it. This will be reused.
  2. 2. Pull off the inner needle shield. Put it in your household trash.
a. Outer needle shieldb. Inner needle shield
Priming your Pen
Prime before each weekly injection. Priming removes air from the cartridge and makes sure that your Pen is working correctly.

Step 7:

  • Slowly turn the dose knob until you hear 2 clicks and the extended line is shown in the dose window.

    This is the prime position. It can be corrected by turning the dose knob in either direction until the prime position lines up to the dose indicator.

Step 8:

  • Hold your Pen with the needle pointing up.
  • Tap the cartridge holder gently to collect air bubbles at the top.

Step 9:

  • Release some medicine into the air by pushing the dose knob in until it stops, then slowly count to 5 while holding the dose knob. The icon must be shown in the dose window. Do not inject into your body.

    Your Pen has been primed if a small amount (a drop) of medicine comes out of the tip of the pen needle.

    • If you do not see medicine, repeat steps 7-9, no more than 2 additional times.
    • If you still do not see medicine, then change the pen needle and repeat steps 7-9, no more than 1 additional time.
    • If you still do not see medicine, contact Lilly at

      1-800-LillyRx (1-800-545-5979).

Injecting MOUNJARO

Step 10:

  • Choose an injection site.

    1. 1. You or another person can inject the medicine in your thigh or stomach (abdomen) at least 2 inches from the belly button.
    2. 2. Another person should give you the injection in the back of your upper arm.
  • Change (rotate) your injection site each week. You may use the same area of your body but be sure to choose a different injection site in that area.
a. Front b. Back

Step 11:

  • Turn the dose knob all the way until it stops AND the icon is in the dose window. This is your weekly dose.

    Do not count clicks as you select the dose.

Step 12:

  1. 1. Insert the needle into your skin.
  2. 2. Inject the medicine by pushing the dose knob in until it stops then slowly count to 5 while holding the dose knob. You may notice the plunger moving with each injection. The icon must be shown in the dose window before removing the needle.

Step 13:

  • Pull the needle out of your skin. A drop of medicine on the needle tip is normal. It will not affect your dose.
  • Confirm the icon is in the dose window.

    If you see the icon in the dose window, you have received the full dose.

    If you do not see the icon in the dose window, insert the needle back into your skin and finish your injection. Do not redial the dose.

    If you still do not think you received the full dose, do not start over or repeat the injection. See “Troubleshooting” section for more information.

After your MOUNJARO injection

Step 14:

  • If you see blood after you pull the needle out of your skin, lightly press the injection site with gauze or a cotton ball.

    Do not rub the injection site.

Step 15:

  • Carefully replace the outer needle shield.

Step 16:

  • Unscrew the capped needle and put the needle in a sharps container (see "Disposing of MOUNJARO KwikPen and pen needles" section).

    Do not store the Pen with the needle attached to prevent leaking, blocking the needle, and air from entering the Pen.

Step 17:

  • Replace the Pen cap.

    Do not store the Pen without the Pen cap attached.

Storing your MOUNJARO KwikPen

Unused Pens:

  • Store unused Pens in the refrigerator between 36°F to 46°F (2°C to 8°C).
  • Unused Pens may be used until the expiration date (EXP) printed on the label if the Pen has been kept in the refrigerator.
  • Do not freeze your Pen. Throw away (discard) the Pen if it has been frozen.

Used Pens:

  • You may store your used Pen at room temperature up to 86°F (30°C) after your injection.
  • Keep away from heat and light.
  • Keep your Pen and needles out of the sight and reach of children.
  • Throw away the Pen 30 days after first use even though the Pen has medicine left in it.
  • Throw away the Pen after receiving 4 weekly doses. Attempting to inject any leftover medicine could result in an incomplete dose even though the Pen still has medicine left in it.
Disposing of MOUNJARO KwikPen and pen needles
  • Put your used pen needles in an FDA-cleared sharps disposal container right away after use.
  • Do not throw away (discard) loose pen needles in your household trash.
  • Discard the used Pen in your household trash or FDA-cleared sharps disposal container after you have removed the needle.
  • If you do not have an FDA-cleared sharps disposal container, you may use a household container that is:

    • made of a heavy-duty plastic,
    • can be closed with a tight-fitting, puncture-resistant lid, without sharps being able to come out,
    • upright and stable during use,
    • leak-resistant, and
    • properly labeled to warn of hazardous waste inside the container.
  • When your sharps disposal container is almost full, you will need to follow your community guidelines for the right way to dispose of your sharps disposal container. There may be state or local laws about how you should throw away (discard) used needles. For more information about safe sharps disposal, and for specific information about sharps disposal in the state you live in, go to the FDA's website at: http://www.fda.gov/safesharpsdisposal.
  • Do not dispose of your used sharps disposal container in your household trash unless your community guidelines permit this. Do not recycle your used sharps disposal container.
Troubleshooting
  • If you cannot remove the Pen cap, gently twist the Pen cap back and forth, and then pull the Pen cap straight off.
  • If the dose knob is hard to push:

    • pushing the dose knob more slowly will make it easier to inject.
    • your needle may be blocked. Put on a new pen needle and prime the Pen.
    • you may have dust, food, or liquid inside the Pen. Throw the Pen away and get a new Pen.
  • If the Pen prevents you from turning the dose knob until the is in the dose window:

    • Throw away (discard) the Pen, including the unused medicine. There may not be enough medicine left in the pen to give a full dose. Do not attempt to inject the leftover medicine.

Additional Information:

If you have any questions or problems with MOUNJARO KwikPen:

  • Call your healthcare provider
  • Call 1-800-Lilly-Rx (1-800-545-5979)
  • Visit www.mounjaro.com

Scan this code to launch

www.mounjaro.com

MOUNJARO® and KwikPen® are registered trademarks of Eli Lilly and Company.

Marketed by:

Lilly USA, LLC

Indianapolis, IN 46285, USA

Copyright ©2026, Eli Lilly and Company. All rights reserved.

MOUNJARO KwikPen meets the current dose accuracy and functional requirements of ISO 11608-1.

This Instructions for Use has been approved by the U.S. Food and Drug Administration.

Revised: January 2026

MOUKP-0002-IFU-20260121

Medication Calendar

Use MOUNJARO 1 time a week.

Write the day of the week you choose to inject. Inject on this day each week (Example: Monday).

I inject my weekly dose on the dates below.
(Month/Day)(Month/Day)(Month/Day)(Month/Day)

About this document

Source: FDA drug labeling via NLM DailyMed · Application number: NDA 215866 · View the label on DailyMed

Revision date stated in the text: April 2026

Found a mistake? Write to us via the contact page.

The information on this site does not replace the advice of a doctor or pharmacist.

Drug information for Mounjaro

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Boxed warning Yes – this drug has a boxed warning (also called a black box warning), the strongest warning of the FDA.
Drug class GLP-1 Receptor Agonist, Glucose-dependent Insulinotropic Polypeptide Receptor Agonist
Active ingredient Tirzepatide
Dosage form Injection, solution
Route Subcutaneous
Marketing status listed in the FDA NDC Directory
Company (applicant) ELI LILLY AND CO
FDA approval NDA 215866New Drug Application (NDA) Approved May 13, 2022
Reference listed drug This is the reference listed drug (RLD) that generics are compared with.
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
2.5 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1506-01
2.5 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1506-61
2.5 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-1152-01
4.17 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4052-01
8.33 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4103-01
12.5 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4210-01
16.7 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4304-01
20.8 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4523-01
25 mg/mL – 2.4 ml in 1 vial, multi-dose / 1 in 1 carton NDC 0002-4612-01
4.17 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3466-01
5 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1495-01
5 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-1243-01
Show more packages (13)+
8.33 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3455-01
12.5 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3444-01
16.7 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3433-01
20.8 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3422-01
25 mg/mL – 2.4 ml in 1 syringe / 1 in 1 carton NDC 0002-3411-01
7.5 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1484-01
7.5 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-2214-01
10 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1471-01
10 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-2340-01
12.5 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1460-01
12.5 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-2423-01
15 mg/0.5 mL – 0.5 ml in 1 syringe / 4 in 1 carton NDC 0002-1457-01
15 mg/0.5 mL – 0.5 ml in 1 vial, single-dose / 1 in 1 carton NDC 0002-3002-01

Source: FDA drug labeling via NLM DailyMed, data as of October 31, 2026. FDA data (DailyMed, Orange Book, Drug Shortages, enforcement reports). Not a substitute for the advice of a doctor or pharmacist.