Fever blister hurt and also exuding, and also they constantly appear to show up prior to that wedding celebration or course get-together. Called high temperature sores, the tiny, fluid-filled sores usually create near or on your lips and also can create signs and symptoms such as prickling, itching, or burning.

They’re brought on by the herpes simplex infection. There are 2 kinds of herpes infection. Fever blister are usually brought on by kind 1 infection (HSV-1). In some instances, HSV-1 can create sores on the genital areas and also kind 2 infection (HSV-2) can create sores on the mouth.

There’s no treatment for fever blisters. Due to the fact that they’re triggered by an infection, they can be treated with antiviral medicines. These consist of the prescription medicine Valtrex.

Valtrex, which consists of the energetic component valacyclovir, can aid your fever blisters clear up much faster. It can additionally lower the variety of fever blisters you obtain. Keep reading to discover just how Valtrex functions and also just how to utilize it to treat your fever blisters.

Dealing With.
fever blisters with Valtrex

Fever blister usually begin to recover by themselves within concerning 4 to 6 days. The very first cool aching you obtain will likely last much longer.

Many people do not call for therapy for their fever blisters, yet, sometimes, a physician might suggest an antiviral medicine such as Valtrex. This might be since you obtain fever blisters usually or if you go to high threat of significant issues, such as from a damaged body immune system.

To deal with a fever blister, you take Valtrex on the day you see a fever blister developing. Valtrex functions by avoiding the herpes infection from spreading out and also expanding.

Your medical professional might additionally suggest Valtrex to aid protect against future fever blisters, which is an off-label usage. Because situation, you and also your medical professional would certainly collaborate to produce the most effective therapy prepare for you.


Valtrex is a dental caplet. It can be found in 500- milligram and also 1-gram toughness. It’s readily available as a brand-name item in addition to a common medicine (valacyclovir). The common item is a dental tablet computer which can be found in the very same toughness.

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For youngsters and also grownups 12 years and also older

The suggested dose is 2 grams two times daily, taken 12 hrs apart, for eventually. Valtrex needs to be begun at the earliest indicators of a fever blister.

For youngsters 11 years and also more youthful

Valtrex is not suggested for dealing with fever blisters in youngsters of this age. It can be made use of to deal with chickenpox in youngsters ages 2 years and also older.


In one 2003 research, individuals that took Valtrex had much shorter fever blister episodes by concerning eventually contrasted to individuals that really did not take Valtrex in all. Many people in the research took Valtrex within 2 hrs of observing their very first fever blister signs and symptoms.

for taking Valtrex


  • Take Valtrex at the very first indication of a fever blister.
  • You can take it with or without food.
  • Do not take greater than the proposed variety of caplets daily.
  • If your youngster can not ingest caplets, ask your pharmacologist to make the caplets right into a dental suspension (fluid).
  • Make sure to consume alcohol great deals of water. Considering that your kidneys aid get rid of the metabolized medication from your body, it is essential to remain moisturized to decrease the threat of significant negative effects, such as kidney damages.


results of Valtrex

The even more typical negative effects of Valtrex consist of:

  • frustration
  • lightheadedness
  • nausea or vomiting
  • throwing up
  • belly discomfort


The significant negative effects of Valtrex can consist of:

Significant adverse effects.

kidney failing in individuals in danger of kidney damages.
high temperature, pain in the back in location where kidneys lie, exhaustion, difficulty making pee.

nerves troubles and also uncommon state of mind or habits.
clinical depression, hostility, unstable activities, complication, speech troubles *, hallucinations, seizures, coma.

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reduced blood cell matters.
exhaustion, enhanced infections.

breakout, puffy mouth and also throat, breathing troubles.

* such as slurred speech and also not making good sense while talking


Valtrex might not be the most effective option for sure individuals.

Individuals with kidney damages or kidney failing might require a reduced dose of Valtrex. If you have kidney troubles prior to you begin taking the medication, be certain to inform your medical professional.

If you have actually ever before had a various other or sensitive significant response to Valtrex, Zovirax (acyclovir), or the active ingredients in them, do not take Valtrex without speaking to your medical professional.

Various Other Therapy Alternatives

Valtrex is not the only medicine made use of to deal with fever blisters. Various other medicines consist of:

  • Zovirax (acyclovir)
  • Denavir (penciclovir)

Zovirax is a dental medicine and also it additionally can be found in lotion kind. Denavir is a topical lotion.

There are additionally all-natural therapies that might aid reduce signs and symptoms of a fever blister throughout a break out.

with your medical professional

To find out more concerning Valtrex, talk with your medical professional. Do not hesitate to examine this write-up with them and also ask any kind of concerns you have, like:

  • Is it vital that I take medicine to avoid fever blisters?
  • Exist drug-free methods to aid stay clear of fever blisters?
  • Exist over the counter medication choices that I could take into consideration?


With Each Other, you and also your medical professional can choose if Valtrex or an additional medicine or therapy is a great option to treat your fever blisters. To find out more, reviewed the 7 ideal fever blister treatments.


Are fever blisters infectious?


Yes. They spread out from person-to-person get in touch with, such as kissing. When the sores are not noticeable, you can pass cool sores to an additional individual also.

Healthline Medical TeamAnswers stand for the viewpoints of our clinical professionals. All material is purely informative and also ought to not be thought about clinical suggestions.

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