How much weight gain should I expect from Valtrex?

I took Valtrex but I did not gain any weight.

Hi, 95089,
I took Valtrex 1xday to avoid a herpes outbreak and didn't gain any weight at all. I finally stopped taking it in my plan of reducing the meds I was taking with the idea that I would take it in the event of an outbreak.
Drugs.com states:
Call your doctor at once if you have any of these other serious side effects:
pain in your lower back; drowsiness, mood changes, increased thirst, loss of appetite, nausea and vomiting;
swelling, weight gain, feeling short of breath;
confusion, agitation, aggression, hallucinations, trouble concentrating; feeling shaky or unsteady;
problems with speech or vision; or
seizure (convulsions).
So IF you gain weight, call your doctor. I wouldn't assume you are going to gain weight.
All the best, Tony