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Gentamicin vs. Neosporin

Gentamicin is a topical antibiotic that treats bacterial skin infections, such as impetigo. It comes as a cream that's useful for wet, oozing, or greasy skin infections. There's also a topical ointment for infections on dry skin. Both forms are applied on the skin 3 to 4 times a day. Gentamicin can be used on adults and children over 1 year of age. Most people don't have many side effects when used as directed. But it's possible to have mild skin irritation, like redness and itching.

• Impetigo
• Other bacterial skin infections

• Side effects aren't common. See "Other Side Effects."

• Risk of other skin infections
• Allergic reaction

Neosporin, sometimes known as "triple antibiotic," is a combination antibiotic ointment that contains three active ingredients: bacitracin, polymyxin B, and neomycin. Neosporin is used to help prevent skin infections in minor cuts, scrapes, and burns, as these wounds heal. But it's not meant to treat animal bites, serious burns, or deep puncture wounds - those might require medical attention. It's available over the counter and as a lower-cost generic medication.

• Preventing infections in minor cuts, scrapes, and burns

See Risks and Warnings

• Allergic reaction
• Use only on your skin