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A 51-year-old female asked:

Is it okay to take expired valtrex (valacyclovir)? can it be poisonous or toxic? can it be less effective?

1 doctor answer1 doctor weighed in
Dr. Thomas Namey
Rheumatology 49 years experience
When did it expire?: * years. Wouldn't take it. One year..I would. Was it in a bottle in a shelf, or sitting out exposed to light. Wouldn't take it sitting out for some time. Most medicines not requiring refrigeration after opening the bottle have a two year "safe" time, assuming no high heat or water!
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Last updated Sep 17, 2016

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