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 molecular formula for acetic acid is CH3COOH, with a molecular weight of 60.05. The structural formula is:
Acetic acid otic solution, USP is available as a nonaqueous otic solution buffered at pH 3 for use in the external ear canal.
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.
INDICATIONS AND USAGE
For the treatment of superficial infections of the external auditory canal caused by organisms susceptible to the action of the antimicrobial.
CONTRAINDICATIONS
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.
PRECAUTIONS
Transient stinging or burning may be noted occasionally when the solution is first instilled into the acutely inflamed ear.
PEDIATRIC USE
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.
To report SUSPECTED ADVERSE REACTIONS, contact Saptalis Pharmaceuticals, LLC at 1-833-727-8254 or FDA at 1800-FDA-1088 or www.fda.gov/medwatch.
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 drops to 5 drops of acetic acid otic solution every 4 hours 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 times or 4 times daily thereafter, for as long as indicated. In pediatric patients, 3 drops to 4 drops may be sufficient due to the smaller capacity of the ear canal.
HOW SUPPLIED
Acetic acid otic solution, USP, containing 2% acetic acid, is available in 15 mL measured‑drop, safety-tip plastic bottles.
NDC 52817-816-15 15 mL Bottle
STORAGE
Store at 20° to 25°C (68° to 77°F) [see USP Controlled Room Temperature]. Keep container tightly closed.
Manufactured by:
Saptalis Pharmaceuticals, LLC
Hauppauge, NY 11788
Distributed by:
TruPharma, LLC
Tampa, FL 33609
Rev. 03/20-R1
