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Acetic Acid

Dosage Form: otic solution

Rx only

Acetic Acid Description

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

Acetic Acid Otic Solution is available as a nonaqueous otic solution buffered at pH 3 for use in the external ear canal.

Acetic Acid - Clinical Pharmacology

Acetic Acid is antibacterial and antifungal; propylene glycol is hydrophilic and provides a low surface tension; benzethonium chloride is a surface active agent that promotes contact of the solution with tissues.

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Indications and Usage for Acetic Acid

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


Hypersensitivity to Acetic Acid Otic Solution or any of the ingredients. Perforated tympanic membrane is considered a contraindication to the use of any medication in the external ear canal.


Discontinue promptly if sensitization or irritation occurs.


Transient stinging or burning may be noted occasionally when the solution is first instilled into the acutely inflamed ear.


Safety and effectiveness in pediatric patients below the age of 3 years have not been established.

Adverse Reactions

Stinging or burning may be noted occasionally; local irritation has occurred very rarely.

Acetic Acid Dosage and Administration

Carefully remove all cerumen and debris to allow Acetic Acid Otic Solution to contact infected surfaces directly. To promote continuous contact, insert a wick of cotton saturated with Acetic Acid Otic Solution into the ear canal; the wick may also be saturated after insertion. Instruct the patient to keep the wick in for at least 24 hours and to keep it moist by adding 3 to 5 drops of Acetic Acid Otic Solution every 4 to 6 hours. The wick may be removed after 24 hours but the patient should continue to instill 5 drops of Acetic Acid Otic Solution 3 or 4 times daily thereafter, for as long as indicated. In pediatric patients, 3 to 4 drops may be sufficient due to the smaller capacity of the ear canal.

How is Acetic Acid Supplied

Acetic Acid Otic Solution, USP, containing 2% Acetic Acid, is available in 15 mL and 30 mL measured-drop, safety-tip plastic bottles.


Store at 20°-25°C (68°-77°F) [see USP Controlled Room Temperature]. Keep container tightly closed.

Manufactured for:
Huntsville, AL 35811



Acetic Acid 
Acetic Acid solution
Product Information
Product Type HUMAN PRESCRIPTION DRUG LABEL Item Code (Source) NDC:0603-7038
Route of Administration AURICULAR (OTIC) DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
Acetic Acid (Acetic Acid) Acetic Acid 0.02 mg  in 1 mL
Inactive Ingredients
Ingredient Name Strength
# Item Code Package Description
1 NDC:0603-7038-41 15 mL in 1 BOTTLE
2 NDC:0603-7038-45 30 mL in 1 BOTTLE
Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
ANDA ANDA040607 02/24/2005
Labeler - Qualitest Pharmaceuticals (011103059)
Name Address ID/FEI Operations
Vintage Pharmaceuticals-Huntsville 825839835 MANUFACTURE(0603-7038)
Revised: 10/2015
Qualitest Pharmaceuticals