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Does Valacyclovir Work

does valacyclovir work

How Long Does Valtrex Take to Work?

Valtrex is the trade name for the drug valacyclovir, and it is most commonly used to treat infections by the herpes viruses that cause cold sores, genital herpes, and shingles.

Valtrex can also be prescribed to shorten the duration and severity of chickenpox outbreaks in adults. While Valtrex does not cure the herpes infection, it usually makes the outbreaks less severe and shorter. People who get frequent outbreaks of cold sores or genital herpes and who recognize the signs of an imminent outbreak can take the drug as soon as the warning signs appear to help make the outbreak as mild as possible.

How Long Does It Take to Work?

How long it takes Valtrex to work depends on several factors, including the severity of the outbreak and how quickly you take it after you know an outbreak is starting. Valtrex is usually prescribed for a 7- to 10-day period, which is close to the time it takes for the herpes blisters to heal. But if your doctor prescribes the drug for a longer period, you should take it for that entire period, even if you feel relief quickly.

For people who have repeated herpes outbreaks and are familiar with the signs that precede an outbreak, the drug may be prescribed for a shorter period of around 5 days. Many people who take Valtrex notice some relief from symptoms within 2 or 3 days, with healing of the blisters after about a week. Again, the sooner during an outbreak a person starts taking Valtrex, the shorter and less severe the outbreak generally is.

Drug interactions

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.Some products that may interact with this drug include: other drugs that may cause kidney problems (including nonsteroidal anti-inflammatory drugs-NSAIDs such as ibuprofen, naproxen).Valacyclovir is very similar to acyclovir. Do not use medications containing acyclovir while using valacyclovir.

What’s the Recommended Adult Dosage?

  • For cold sores: 2 grams orally every 12 hours for a total of 2 doses.
  • For genital herpes: 1 gram orally twice a day for 7 to 10 days
  • Reoccurring herpes outbreaks: 500 mg orally twice a day for 3 days

How Long Does It Take for Valtrex to Work?

  • Symptom relief typically takes just 2 to 3 days.
  • Fever blisters normally go away a week after treatment.

Storage

Store at room temperature away from light and moisture. Do not store in the bathroom. Keep all medications 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.

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