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Magnesium Chloride Package Insert

Updated:
Facts
Status:
Prescription (Rx)
Strength:
200 mg/mL
Active ingredient:

Prescribing information (package insert) - Magnesium Chloride

DESCRIPTION

Magnesium Chloride Injection is a sterile solution of Magnesium Chloride Hexahydrate in Water for Injection q.s. Each mL contains Magnesium Chloride Hexahydrate 200 mg, Sodium Chloride 9 mg, Benzyl Alcohol 1% as a preservative, Water for Injection, q.s. pH adjusted with Hydrochloric Acid and/or Sodium Hydroxide. Total osmolarity equivalent to 2.951 mOsm/mL.

Contains 1.97 mEq of Mg++ and Cl- per mL.

The structural formula is MgCl2•6H2O

ACTIONS

Magnesium is the second most plentiful cation within cellular fluids. It is an important activator of many enzyme systems and deficits are accompanied by a variety of functional disturbances.

INDICATIONS

As an electrolyte replenisher in magnesium deficiencies.

CONTRAINDICATIONS

Magnesium Chloride Injection should not be administered if there is renal impairment, marked myocardial disease or to comatose patients.

WARNING

Do not use if a precipitate is present.

PRECAUTIONS

The usual precautions for parenteral administration should be observed. Administer with caution if flushing and sweating occurs. A preparation of a calcium salt should be readily available for intravenous injection to counteract potential serious signs of magnesium intoxication. As long as deep tendon reflexes are active it is probable that the patient will not develop respiratory paralysis. Respiration and blood pressure should be carefully observed during and after administration of Magnesium Chloride Injection.

Pregnancy

Animal reproduction studies have not been conducted with magnesium chloride. It is also not known whether magnesium chloride can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Magnesium Chloride should be given to a pregnant woman only if clearly needed.

ADVERSE REACTIONS

Flushing, sweating, sharply lowered blood pressure, hypothermia, stupor and ultimately respiratory depression.

DOSAGE AND ADMINISTRATION

For intravenous infusion: 4 grams in 250 mL of 5% Dextrose Injection, at a rate not exceeding 3 mL per minute. Serum magnesium levels should serve as a guide to continued dosage.

USUAL DOSAGE RANGE

1 to 40 grams daily.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration whenever solution and container permit.

HOW SUPPLIED

Magnesium Chloride Injection 200 mg/mL (20% w/v).

NDC 67457-134-50

50 mL Multiple-Dose Vial. Individually boxed.

Store at 20° to 25°C (68° to 77°F). [See USP Controlled

Room Temperature.]

Manufactured for:

Mylan Institutional LLC

Morgantown, WV 26505

Manufactured by:

Mylan Institutional

Galway, Ireland

1084L101

Revised: 10/2021

MI:MAGNIJ:R4

About this document

Source: FDA drug labeling via NLM DailyMed · View the label on DailyMed

Revision date stated in the text: October 2021

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Drug information for Magnesium Chloride

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Drug class Calculi Dissolution Agent, Osmotic Laxative
Active ingredient Magnesium chloride 200 mg/mL
Dosage form Injection
Route Intravenous
Marketing status listed in the FDA NDC Directory
Company (applicant) Mylan Institutional LLC
FDA approval UNAPPROVED DRUG OTHERUnapproved drug
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
200 mg/mL – 50 ml in 1 vial, multi-dose / 1 in 1 carton NDC 67457-134-50

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.