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Avoca Flexible Caustic Applicator Package Insert

Status:
Prescription (Rx) Facts
Strength:
30 mg/40 mg
Other brand names:
Active ingredient:

Prescribing information (package insert) - Avoca Flexible Caustic Applicator

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

KEEP OUT OF REACH OF CHILDREN. DO NOT USE ON OR NEAR EYES.

Storage

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.

About this document

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

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Drug information for Avoca Flexible Caustic Applicator

Rx or OTC
Prescription (Rx)?
  • This drug is available only with a prescription from a licensed healthcare provider.
  • Rx
Active ingredient Silver nitrate 30 mg/40 mg
Dosage form Stick
Route Topical
Marketing status listed in the FDA NDC Directory
Company (applicant) Bray Group Limited
FDA approval UNAPPROVED DRUG OTHERUnapproved drug
Manufacturers 1 labelers list this drug on DailyMed
Packages (NDC)
Package
30 mg/40 mg – 4000 mg in 1 vial / 10 in 1 box

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.