Before taking Valtrex (valacyclovir) 500mg, tell your doctor or pharmacist if you are allergic to it or to acyclovir; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using Valtrex (valacyclovir) 500mg, tell your doctor or pharmacist your medical history, especially of: kidney disease, blood disorders, immune system problems (e.g., HIV disease, bone marrow transplant, organ transplant).
Valtrex (valacyclovir) 500mg may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Caution is advised when using Valtrex (valacyclovir) 500mg in the elderly because they may be more sensitive to the effects of the drug, especially confusion, agitation, and kidney problems.
Valtrex (valacyclovir) 500mg should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor.
Valtrex (valacyclovir) 500mg passes into breast milk. Consult your doctor before breast-feeding.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Store at room temperature between 59-77 degrees F (15-25 degrees C) away from light and moisture. Do not store in the bathroom. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Read the Patient Information Leaflet available from your pharmacist. Consult your doctor or pharmacist if you have any questions.
Take Valtrex (valacyclovir) 500mg by mouth, with or without food or as directed by your doctor. Drink plenty of fluids while taking Valtrex (valacyclovir) 500mg. Valtrex (valacyclovir) 500mg works best if you start taking the medication when you first notice symptoms. Valtrex (valacyclovir) 500mg may not work as well if you wait to start it. How soon you need to start the medication to get benefit depends on the type of infection. Dosage of Valtrex (valacyclovir) 500mg is based on the type of infection, your medical condition, and response to treatment.
To treat chicken pox or shingles, start taking Valtrex (valacyclovir) 500mg at the first symptom or after the rash first appears. To treat cold sores or genital herpes, start taking Valtrex (valacyclovir) 500mg at the first sign of symptoms (such as tingling/itching/burning feeling). Continue to take Valtrex (valacyclovir) 500mg until the full-prescribed amount is finished even if symptoms disappear.
When using Valtrex (valacyclovir) 500mg to suppress/control outbreaks, take exactly as directed by your doctor. Do not skip doses or stop taking this without your doctor's approval. Stopping therapy too soon may result in ineffective treatment.
If using Valtrex (valacyclovir) 500mg to treat an outbreak, tell your doctor if your condition persists or worsens.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Nausea, vomiting, fatigue, headache, dizziness, stomach pain, painful periods may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.
Remember that your doctor has prescribed Valtrex (valacyclovir) 500mg because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using Valtrex (valacyclovir) 500mg do not have serious side effects.
Tell your doctor immediately if any of these unlikely but serious side effects occur: mental/mood changes (e.g., agitation, hallucinations), confusion, speech problems, shaky/unsteady movement, vision changes.
Tell your doctor immediately if any of these rare but very serious side effects occur: seizures, loss of consciousness, signs of other infections (e.g., fever, persistent sore throat).
Valtrex (valacyclovir) 500mg may rarely cause a blood disorder (thrombotic thrombocytopenic purpura) or a severe kidney problem (hemolytic uremic syndrome). These problems are more likely to occur if you have HIV disease or if you have had a bone marrow transplant or an organ transplant. Tell your doctor immediately if any of these rare but very serious side effects occur: change in the amount of urine, easy bruising/bleeding, unusual fever.
A very serious allergic reaction to Valtrex (valacyclovir) 500mg is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.
This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.
In the US -
Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
Click here to view a more detailed list of Valtrex side effects.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
If you miss a dose of Valtrex (valacyclovir) 500mg, take it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Your healthcare professionals (e.g., doctor or pharmacist) may already be aware of any possible drug interactions and may be monitoring you for it. Do not start, stop or change the dosage of any medicine before checking with them first.
Before using Valtrex (valacyclovir) 500mg, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: cimetidine, probenecid.
Tell your doctor or pharmacist if you are also using other drugs which may be harmful to your kidneys such as: aminoglycosides (e.g., gentamicin, tobramycin), amphotericin B, cyclosporine, nonsteroidal anti-inflammatory drugs - NSAIDs (e.g., ibuprofen), tacrolimus, vancomycin.
This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
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IMPORTANT NOTE: The preceding information is intended to heighten awareness of health information and does not suggest diagnosis or treatment. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.