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Swabs (Avoca) Package Insert

Status:
Prescription (Rx) Facts
Strength:
25 g/100 mL, 75 g/100 mL
Brand names:
Active ingredients:

Prescribing information (package insert) - Swabs

Drug Facts

DOSAGE & ADMINISTRATION:

Prior to use, the applicator stick may be bent or shaped to allow easier access to the target area. The

medicated end of the applicator should be moistened in clean water and applied to the affected tissue.

One applicator is normally sufficient for each application. The strength of the action is controlled by

the amount of water used to moisten the tip. The applicator action can be stopped by washing the area

with a saline solution (0.9% sodium chloride).

USES:

Caustic applicators are useful for cauterization of skin or mucous membrane and for the removal of

granulation tissue, warts and verrucae.

CONTRAINDICATIONS & ANTIDOTES:

Caustic applicators must not be used for genital warts. Continued application to mucous membranes and

open wounds leads to argyria, a bluish-black discoloration of the skin due to depositions of granules of

silver compounds in the connective tissues.

This condition persists indefinitely or disappears very slowly. Poisoning by oral ingestion is unlikely

with the quantities involved, but treatment for poisoning is the immediate ingestion of large amounts of

salt water followed by an emetic. Then administer a dose of Epsom Salts followed with milk.

Immediately call a physician.

CAUTION:

Federal (USA) law prohibits dispensing without prescription.

CAUTION:

Federal (USA) law prohibits dispensing without prescription.

Keep out of reach of children.

Do not use on or near eyes. Do not use on genital warts.

Avoid storage in direct sunlight/fluorescent lighting and store in a cool, dry, and well-ventilated area.

Store at room temperature in the closed package, in a dry place protected from light. Exposure to light

will cause the silver nitrate tip to turn black, but will not affect the product's potency.

Not made with natural rubber latex.

Questions?Call 1-800-777-4908

Distributed by McKesson Medical-Surgical Inc.

Richmond, VA 23233

About this document

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

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

Drug information for Swabs

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Active ingredients Potassium nitrate 25 g/100 mL, Silver nitrate 75 g/100 mL
Dosage form Swab
Route Topical
Marketing status listed in the FDA NDC Directory
Company (applicant) McKesson
FDA approval UNAPPROVED DRUG OTHERUnapproved drug
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
25 g/100 mL, 75 g/100 mL – 400 ml in 1 vial / 10 in 1 box / 10 in 1 case NDC 68599-6303-8

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.