Valtrex (Valacyclovir) — Uses, Dosage, Side Effects & Safety

Drug class: Antiviral (Nucleoside Analog DNA Polymerase Inhibitor)

Overview

Valtrex is an antiviral medication used to treat infections caused by certain types of viruses, including herpes simplex (which causes cold sores and genital herpes), varicella-zoster (which causes shingles and chickenpox), and cytomegalovirus in some cases. It works by stopping the growth and spread of the virus in your body, helping to reduce symptoms and speed up healing. Valtrex does not cure herpes, but it can decrease the severity and length of outbreaks, help sores heal faster, and reduce pain or itching. It can also lower the risk of passing the virus to others when taken as prescribed. For best results, start Valtrex as soon as symptoms appear. Key points: Take Valtrex exactly as directed by your healthcare provider. Drink plenty of fluids while taking this medication. If you have kidney problems or are pregnant, discuss with your doctor before starting Valtrex.

Therapeutic uses

• Herpes zoster (shingles)
• Genital herpes (treatment and suppression)
• Herpes labialis (cold sores)
• Chickenpox (varicella)

Common side effects

• Headache
• Nausea
• Abdominal pain
• Dizziness
• Diarrhea
• Kidney problems
• Thrombotic thrombocytopenic purpura/hemolytic uremic syndrome (TTP/HUS)

Frequently Asked Questions about Valtrex

How quickly does Valtrex work?

Valtrex starts working soon after your first dose. For cold sores and genital herpes, symptoms may begin to improve within 2-3 days, but complete healing may take up to 7-10 days. Starting treatment at the first sign of symptoms gives the best results.

Can Valtrex cure herpes?

No, Valtrex does not cure herpes. It helps control outbreaks, reduces symptoms, and lowers the risk of spreading the virus to others, but the virus remains in the body.

Is Valtrex safe during pregnancy?

Valtrex should be used during pregnancy only if clearly needed and prescribed by your doctor. Discuss the risks and benefits with your healthcare provider.

Can I take Valtrex with other medications?

Some medications, especially those affecting the kidneys, may interact with Valtrex. Always inform your doctor about all medicines and supplements you are taking.

What should I do if I miss a dose?

Take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose. Do not double up.

Can I drink alcohol while taking Valtrex?

There are no direct interactions between Valtrex and alcohol, but excessive alcohol can increase the risk of side effects such as dehydration. Drink alcohol in moderation, if at all.

How should I store Valtrex tablets?

Store Valtrex at room temperature, away from moisture and heat. Keep the medication out of reach of children.

Educational information only. Always consult a qualified healthcare professional before starting, stopping, or changing any medication.