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Questions & Answers

Side Effects & Adverse Reactions

Discontinue promptly if sensitization or irritation occurs.

Legal Issues

There is currently no legal information available for this drug.

FDA Safety Alerts

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Manufacturer Warnings

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FDA Labeling Changes

There are currently no FDA labeling changes available for this drug.


For the treatment of superficial infections of the external auditory canal caused by organisms susceptible to the action of the antimicrobial.


There is currently no drug history available for this drug.

Other Information

VōSoL (Acetic acid otic solution, USP) is a solution containing acetic acid (2%) in a propylene glycol vehicle containing propylene glycol diacetate (3%), benzethonium chloride (0.02%), and sodium acetate (0.015%). The empirical formula for acetic acid is CH3COOH, with a molecular weight of 60.05. The structural formula is:

Acetic Acid Structural Formula

VōSoL is available as a nonaqueous otic solution buffered at pH 3 for use in the external ear canal.

Vosol Manufacturers

  • Ecr Pharmaceuticals Co., Inc.
    Vosol (Acetic Acid) Solution [Ecr Pharmaceuticals Co., Inc.]

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