A member asked:

Is gentamicin sulfate cream effective for cold sores?

9 doctors weighed in across 4 answers
Dr. Thomas Frymark answered

Specializes in Dentistry

No: Gentamicin sulfate cream is antibiotic, useless for virus induced lesions. Acyclovir ointment can be applied to the sores. Anesthetic creams can reduce acute pain. I recommend keeping yourself fit to fight the viruses with healthy foods and proper sleep.

Answered 2/28/2018

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Dr. steven Present answered

Specializes in Dentistry

No: Gentamicin is an antibiotic. It is only effective against certain types of bacteria. Cold sores are caused by herpes simplex 1 virus. Therefore, an antiviral type of medication is required ie Denavir cream or Valtrex (valacyclovir) tablets. Both require a prescription from your physician or dentist.

Answered 2/11/2020

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Dr. Larry Lutwick answered

Specializes in Infectious Disease

No: But unless one intervenes early with specific oral therapy, the time to healing with or without therapy is about the same.

Answered 2/11/2020

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Dr. Alan Levine answered

Specializes in Pediatrics

No: Gentamicin is an antibiotic. Cold sores are caused by a virus and, therefore the cream will be ineffective. An antiviral cream or oral medication can be prescribed to shorten the duration of the outbreak.

Answered 2/11/2020

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