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A member asked:

Can i take 1500mg valtrex (valacyclovir) for coldsores every 12 hours until they are gone?

A doctor has provided 1 answer
Dr. Robert Killian answered

Specializes in General Practice

Valacyclovir : Yes. It is common to take 1000 mg twice or thrice daily for five days. If that dose is not helping your doctor may want to figure out what is delaying treatment.

Answered 7/31/2017

5.2k views

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Is it okay to take antibiotics while treating a cold sore with valtrex (valacyclovir)?

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If I shared a straw with someone who has had a recent cold sore outbreak, can I take Valtrex (valacyclovir) as prophylaxis? If so, what dosage would be appropriate?

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Scheduled for a colonoscopy Monday. Have to prep tomorrow . Feel a cold sore coming on,on my mouth. Ok to take valtrex (valacyclovir) tonite and tomorrow ?

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I have a small bump in the center of my upper lip. It does not throb or itch but looks very much like a cold sore. Should I take a Valtrex (valacyclovir)?

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A member asked:

The Valtrex (valacyclovir) prescription for the treatment of my cold sores is1 gm. I took it twice for one day at an interval of 12 hours. Istill have a big enough cold sore on my lip. Should i continuetaking it?

5 doctors weighed in across 4 answers

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