Valacyclovir
Valtrex®
Valacyclovir
(val ay SYE kloe veer)U.S. Brand Names
Valtrex®Canadian Brand Names
Valtrex®Pharmacologic Category
Antiviral Agent, OralReasons not to take this medicine
- If you have an allergy to valacyclovir, acyclovir, or any other part of this medicine.
- Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.
What is this medicine used for?
- This medicine is used to prevent or treat a variety of viral infections.
How does it work?
- Valacyclovir works to injure the virus and fight the infection.
How is it best taken?
- Use prescription as directed, even if feeling better.
- Take this medicine with or without food. Take with food if it causes an upset stomach.
- Take this medicine with a full glass of water.
- Drink plenty of noncaffeine-containing liquid unless told to drink less liquid by healthcare provider.
- If you are taking this medicine for a recurring infection, start medicine as soon as possible.
What do I do if I miss a dose? (does not apply to patients in the hospital)
- Take a missed dose as soon as possible.
- If it is almost time for the next dose, skip the missed dose and return to your regular schedule.
- Do not take a double dose or extra doses.
What are the precautions when taking this medicine?
- Check medicines with healthcare provider. This medicine may not mix well with other medicines.
- You can get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen; wear protective clothing and eyewear.
- Tell healthcare provider if you are pregnant or plan on getting pregnant.
- Tell healthcare provider if you are breast-feeding.
What are some possible side effects of this medicine?
- Headache.
- Nausea or vomiting. Small frequent meals, frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.
- Diarrhea.
What should I monitor?
- Change in condition being treated. Is it better, worse, or about the same?
- Take good care of your teeth. See a dentist regularly.
- Follow up with healthcare provider.
Reasons to call healthcare provider immediately
- If you suspect an overdose, call your local poison control center immediately or dial 911.
- Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.
- Severe headache.
- Severe nausea or vomiting.
- Severe diarrhea.
- Sudden change in vision, eye pain or irritation.
- Pinpoint red spots on skin.
- Any rash.
- No improvement in condition or feeling worse.
How should I store this medicine?
- Store at room temperature.
- Protect from moisture. Do not store in a bathroom or kitchen.
General statements
- If you have a life-threatening allergy, wear allergy identification at all times.
- Do not share your medicine with others and do not take anyone else's medicine.
- Keep all medicine out of the reach of children and pets.
- Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).
- Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.
Brand Names:
Other drugs
- Valacyclovir
- Valerian
- Valganciclovir
- Valproic Acid and Derivatives
- Valsartan
- Valsartan and Hydrochlorothiazide
- Vanadium (Vanadyl Sulfate)
- Vancomycin
- Vardenafil
- Varenicline
- Varicella Virus Vaccine
- Venlafaxine
- Verapamil
- Verteporfin
- Vinblastine
- Vincristine
- Vinorelbine
- Vitamins (Multiple/Oral)
- Vitamins (Multiple/Prenatal)
- Voriconazole


