Drug Class: What is Valtrex and why is Valtrex prescribed?
Drug Mechanism: How does Valtrex work?
Dosage: How should you take Valtrex?
Possible food and drug interactions with Valtrex
Special Information on Valtrex
Possible Valtrex Side effects
|Drug Class: What is Valtrex and why is Valtrex prescribed?|
Valtrex is an antiviral agent.
Valtrex treats herpes zoster infection (shingles) or genital herpes infection.
Valtrex is not a cure; it will help the sores heal faster and relieve the pain or discomfort. Valtrex can also be used to help prevent a genital herpes infection from coming back.
|Drug Mechanism: How does Valtrex work?|
Valtrex contains the antiviral ingredient valacyclovir. Valacyclovir is known as a pro-drug. Once inside the body it is broken down into the active ingredient aciclovir, which is an antiviral medicine used to treat infections with herpes viruses. These include the viruses that cause cold sores and genital herpes (herpes simplex 1 and 2) and the virus that causes chickenpox and shingles (varicella zoster or herpes varicellae). Aciclovir works by stopping these herpes viruses from reproducing and infecting more cells in the body.
Aciclovir is converted to a more active
|Dosage: How should you take Valtrex?|
Valtrex may be given without regard to meals.
|Possible food and drug interactions with Valtrex|
The blood level of Valtrex may be increased by the following medicines:
This is not normally clinically important. However, where high doses of Valtrex are being used to prevent CMV infection following a kidney transplant, your doctor may consider using alternatives to these medicines, or simply monitor you more closely.
|Special Information on Valtrex|
Most Important Fact about Valtrex
Valtrex precautions if you are pregnant or breastfeeding
|Possible Valtrex Side effects|
More common side effects of Valtrex may include:
Rare side effects of Valtrex may include:
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