Valacyclovir, sold under the brand name Valtrex, is a medication that treats herpes (viral infection that causes chicken pox or shingles) in children and adults, states Drugs.com. Tell your doctor whether you suffer from autoimmune disorders such as HIV or have a history of kidney disease or a bone marrow transplant. Take time to learn about valacyclovir's side effects.
Thrombotic Thrombocytopenic Purpura or Hemolytic Uremic Syndrome
Valacyclovir can lead to platelet (substance in your body responsible for wound healing) problems such as thrombotic thrombocytopenic purpura (TTP) or hemolytic uremic syndrome (HUS). TTP is a condition characterized by blood clot formations and decreased platelet counts. HUP is a condition characterized by blood clots, low platelet counts and kidney failure. According to RxList.com, stop valacyclovir under your doctor's supervision when experiencing TTP or HUS symptoms.
Serious Side Effects
Valacyclovir may also lead to serious side effects such as fever, easy bruising, yellow skin, convulsions or swelling, states Drugs.com. Valacyclovir can also affect your psyche and lead to confusion, aggression, agitation, trouble concentrating or hallucinations (hearing or seeing things that aren't present). Weight gain, shortness of breath, fainting spells and speech or visual problems are also serious side effects. Seek medical attention immediately to stop these symptoms.
Acute Renal Failure
Valacyclovir can also lead to acute renal failure (ARF). According to RxList.com, ARF is more likely in elderly patients with reduced renal function. It is also likely to form in people with underlying kidney disease and in people who take nephrotoxic (kidney-damaging) medications. Reduced hydration is also another factor that leads to ARF with valacyclovir use.
Allergic Reaction
In the unfortunate instance you experience an allergic reaction, get immediate help to prevent further harm. According to Drugs.com, symptoms of an allergic reaction include trouble breathing, hives and swelling of the lips, face or throat.
Other Physical Side Effects
Other physical side effects include stomach pain, nausea, joint pain, menstrual pain or a skin rash. You may also develop a stuffy nose or sore throat.
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