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Valtrex Medication Information Leaflet

Common Use

Valtrex is commonly used for the treatment of herpes infections, including genital herpes, cold sores, and shingles. It may also be used to prevent recurring outbreaks of these conditions.

Generic Ingredient

Valtrex's generic ingredient, Valacyclovir, is available in Canada as a generic medication. It is commonly prescribed for the same indications as Valtrex.

Classification

Valtrex is classified as an antiviral medication.

Certification Information

Valtrex is approved for use in various countries, including the United States, the United Kingdom, Australia, and Canada.

Known Alternatives in Canada

Some known alternatives to Valtrex in Canada may include acyclovir, famciclovir, and docosanol. It is important to consult a healthcare professional for alternative options.

Clinical Use

Valtrex is used for the clinical treatment and management of herpes infections to reduce the severity and duration of symptoms.

Spectrum Of Activity

Valtrex has activity against herpes simplex viruses and varicella-zoster virus, the viruses responsible for causing herpes infections and shingles.

Drug interaction

Valtrex may interact with certain medications, including cimetidine, probenecid, and nephrotoxic drugs. It is important to inform the healthcare provider about all medications being taken.

Dosage and Directions

The dosage and directions for Valtrex will vary depending on the condition being treated. It is important to follow the prescribed dosage and instructions provided by the healthcare professional.

Contraindications and Precautions

Valtrex is contraindicated in individuals with a known hypersensitivity to valacyclovir or acyclovir. Precautions should be taken in patients with renal impairment.

Possible side effect

Common side effects of Valtrex may include nausea, headache, dizziness, and abdominal pain. Serious side effects such as allergic reactions are rare but possible.

Missed dose and Overdose

If a dose of Valtrex is missed, it should be taken as soon as remembered. In case of overdose, immediate medical attention should be sought.

Storage

Valtrex should be stored at room temperature away from moisture and heat. It should be kept out of the reach of children.

Special Cases

Special care should be taken when prescribing Valtrex to individuals with compromised immune systems, as well as in elderly patients.

Known Non-standard Use

In some cases, Valtrex may be used off-label for the treatment of other viral infections or conditions as deemed appropriate by a healthcare professional.

Patient Considerations

Patients should be advised to stay well-hydrated while taking Valtrex to support proper kidney function, especially in cases of high dosage or prolonged use.

Possible Risks

There may be a risk of development of drug-resistant strains of herpes viruses with prolonged or repeated use of Valtrex.

Breastfeeding and Pregnancy

Valtrex should be used during pregnancy or breastfeeding only if the potential benefit justifies the potential risk to the fetus or infant, as determined by a healthcare professional.

Valtrex FAQ

What is Valtrex used for?

Valtrex is used to treat infections caused by herpes viruses, including genital herpes, cold sores, and shingles.

How does Valtrex work?

Valtrex works by stopping the growth of the virus. It helps the sores heal faster, keeps new sores from forming, and decreases pain/itching.

What are the possible side effects of Valtrex?

Common side effects of Valtrex include headache, nausea, stomach pain, and dizziness. Serious side effects may include mood changes, shaking, and signs of kidney problems.

Can I take Valtrex while pregnant?

It's important to consult a healthcare professional before taking Valtrex during pregnancy, as the risks and benefits need to be carefully considered.

What should I avoid while taking Valtrex?

Avoid sexual intercourse or use a latex condom to prevent spreading the herpes virus to others. Also, avoid getting this medication in your eyes.

How should I take Valtrex?

Take Valtrex exactly as prescribed. It's usually taken every 8 hours (three times a day) for 7 days to treat shingles. For cold sores or genital herpes, it's taken twice a day for 5–10 days.

Can Valtrex prevent the spread of herpes?

Valtrex may not prevent the spread of genital herpes. To prevent the spread of genital herpes, use protective measures during sexual activity, even when symptoms are not present.

How quickly does Valtrex work?

Valtrex starts working as soon as you take it. However, it may take a few days for symptoms to improve significantly.

Are there any food or drinks I should avoid while taking Valtrex?

There are no specific foods or drinks that need to be avoided while taking Valtrex. It's important to stay well-hydrated while on this medication.

Can I drink alcohol while taking Valtrex?

Drinking alcohol while taking Valtrex is not expected to cause any specific issues. However, it's best to consult with a healthcare professional.

Can Valtrex be used for cold sores?

Yes, Valtrex can be used to treat cold sores, also known as herpes labialis, in adults and children 12 years of age and older.

What happens if I miss a dose of Valtrex?

If you miss a dose of Valtrex, take it as soon as you remember. However, if it's almost time for your next dose, skip the missed dose and continue with your regular dosing schedule.

Does Valtrex cure herpes?

Valtrex is used to manage and relieve symptoms of herpes but does not cure the infection. It can help the sores heal faster and reduce the frequency of outbreaks.

Are there any drug interactions with Valtrex?

Before taking Valtrex, inform your healthcare professional about all other medications you are taking, including over-the-counter and prescription medicines, vitamins, and herbal supplements.