Discuss With Your Doctor
Before taking Valtrex, tell your doctor if you have HIV/AIDS, a weak immune system, kidney
disease (or if you are on dialysis), or if you have had a kidney or bone marrow transplant.
Valtrex can be harmful to the kidneys, and these effects are increased when it is used
together with other medicines that can harm the kidneys. Tell your doctor about all other
medications you are using. You may need dose adjustments or special tests when taking
certain medications together with Valtrex.
Treatment with Valtrex should be started as soon as possible after the first appearance of
symptoms (such as tingling, burning, blisters).
Herpes virus can be passed from an infected mother to her baby during childbirth. If you
have genital herpes, it is very important to prevent herpes lesions during your pregnancy
so that you do not have a genital lesion when your baby is born.
Valtrex will not prevent the spread of genital herpes. Herpes infections are contagious
and you can infect other people even while you are taking with Valtrex.
Stop taking Valtrex and call your doctor right away if you have any signs of a serious
side effect that can harm red blood cells, such as:
- easy bruising or bleeding
- red spots on the skin (not related to herpes or chickenpox)
- bloody diarrhea
- pale or yellowed skin
- or urinating less than usual or not at all
Do not give Valtrex to a child unless it has been prescribed by a doctor.