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External otitis or "swimmer's ear" is an infection of the skin covering the outer ear and ear canal. Acute external otitis is commonly a bacterial infection caused by streptococcus, staphylococcus, or pseudomonas types of bacteria. The swimmer's ear infection is usually caused by excessive water exposure from sw...
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Hydrocortisone 1%
and Acetic Acid 2%
Otic Solution
(Hydrocortisone and Acetic Acid Otic Solution, USP)
Rx only
Hydrocortisone and Acetic Acid Otic Solution, USP contains Hydrocortisone (1%) and acetic acid, glacial (2%) in a propylene glycol vehicle containing propylene glycol diacetate (3%) and benzethonium chloride (0.02%), sodium acetate (0.015%) and citric acid (0.2%).
Acetic acid has a molecular formula of CH3COOH with molecular weight of 60.05. The structural formula is:

Hydrocortisone is a Synthetic Steroid used as an anti-inflammatory and antipruritic agent. Its chemical name is Pregn-4-ene-3, 20-dione, 11, 17, 21-trihydroxy-, (11b)-. Hydrocortisone has a molecular formula of C21H30O5 with molecular weight 362.46. The structural formula is:

Hydrocortisone and acetic acid is available as a nonaqueous otic solution buffered at pH (2.0 to 4.0) for use in the external ear canal.
Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.
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