Boric Acid Ear Drop
Boric acid is used to treat an outer ear infection (external otitis). It works by stopping the growth of bacteria and fungus. Treating the infection reduces pain and swelling in the ear. Wetness in the ear canal can help bacteria and fungus to grow.
A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including rash, itching/swelling (especially of the ear/face/tongue/throat), severe dizziness, trouble breathing.
Dosing & Uses
Dosage Forms & Strengths
boric acid/alcohol otic
- (boric acid 2.75%)/isopropyl alcohol
Contact physician for severe pain/burning after instilling drops
Discontinue if rash, erythema, or dry skin develops
Pregnancy & Lactation
Pregnancy category: C
Lactation: Not secreted into breast milk
Pregnant or breastfeeding patients should seek the advice of health professional before using OTC drugs
A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B: Maybe acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies are done and showed no risk.C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done.D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk.X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist.
Mechanism of Action
Boric acid is a weak topical anti-infective agent
Isopropyl alcohol is used as a drying agent
Instill 3-8 gtt in each ear