Serious Side Effects of Valacyclovir
Some side effects of
valacyclovir should be reported immediately to your healthcare provider. These include, but are not limited to:
- Decreased urination
- Vision changes, including blurred or double vision
- Unexplained skin rash
- Unexplained blisters or peeling of the skin
- Itching
- Hives
- Unexplained swelling
- Wheezing
- Difficulty breathing or swallowing
- Unusual bleeding or bruising
- Unexplained fever
- Hallucinations
- Aggressive behavior
- Unsteady or shaky movements
- Confusion
- Speech problems
- Seizures
- Tremors.
Rare Side Effects of Valacyclovir
Rare side effects of valacyclovir happen in very few patients taking the medication. Since these side effects are so rare, it is difficult to tell whether they are caused by the valacyclovir or by something else.
Some of these rare valacyclovir side effects include, but are not limited to:
- Low blood counts, including low white blood cells (neutropenia), low platelets (thrombocytopenia), or low red blood cells (anemia)
- High blood pressure (hypertension)
- Increased heart rate (tachycardia)
- Behavioral or mental changes
- Diarrhea
- Vision changes
- Hair loss (see Valtrex and Hair Loss)
- Hepatitis (liver inflammation)
- Kidney failure.
Side Effects of Valacyclovir: A Summary
You may experience some or none of the side effects of valacyclovir described in this article. Unfortunately, there is no way for your healthcare provider to know beforehand if you will have side effects from a medicine that you have never tried. Therefore, let your healthcare provider know if you develop any side effects or if something "just does not seem right." While it may not be a valacyclovir side effect, your healthcare provider will be able to diagnose and treat the problem.
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