Valtrex Overview, Dosage, How to Take, Side Effects and Overdose

Valtrex serious side effects. Stop taking Valtrex and call your doctor right away if you have any of the following signs of a serious side effect that can harm red blood cells:

  • fever, easy bruising or bleeding
  • red spots on the skin (not related to herpes or chickenpox)
  • bloody diarrhea, vomiting
  • pale or yellowed skin
  • weakness or fainting
  • urinating less than usual or not at all