I see they are both recommended for suppression therapy. Is cost the only real difference?
They are pretty much alike. Cost can be a factor for sure.
acyclovir has been around longer so it tends to be cheaper. They are both in the same class designed to treat the same things. Genital herpes, shingles, fever blisters, etc:
Acyclovir has been around the longest Valtrex is the new one both work well, Valtrex cost the most.
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