valacyclovir
Used for Shingles
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Manufactured by various FDA-approved generic manufacturers.
*You can pay as little as $0 per fill using Drug Coupons or Patient Assistance Programs. Subject to applicability & eligibility requirements.
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valacyclovir Uses, Side Effects, Interactions, Warnings & Dosing
What dosages is valacyclovir available in?
valacyclovir is available as 500 mg and 1000 mg oral tablet.
What is valacyclovir used for?
valacyclovir is an antiviral that is used to treat:
Chickenpox (varicella) in children ages 2 to 17 years old
Cold sores in people age 12 years and older
Genital herpes in adults
Shingles (herpes zoster) in adults
How does valacyclovir work?
valacyclovir is an antiviral medication. When valacyclovir gets absorbed into your body, it gets converted (changed) to acyclovir, another available antiviral medication.
valacyclovir works by preventing an important protein that’s used to make genetic material (DNA) from working in the herpes simplex virus and varicella zoster virus. By doing this, valacyclovir prevents the virus from making copies of itself and spreading.
How do I take valacyclovir?
valacyclovir is dosed as follows:
Cold sores
The typical dose is 2 grams by mouth twice daily (taken 12 hours apart) for 1 day.
Genital herpes
First outbreak: The typical dose is 1 gram by mouth twice daily for 10 days.
Repeated outbreaks: The typical dose is 500 mg by mouth twice daily for 3 days.
Outbreak prevention: The typical dosing range is 500 mg to 1 gram by mouth once daily, depending on the number of outbreaks you’ve had. For people who also have human immunodeficiency virus (HIV), the typical dose is 500 mg twice daily.
Lower risk of transmission: The typical dose is 500 mg by mouth once daily.
Shingles
The typical dose is 1 gram by mouth 3 times daily for 7 days.
Chickenpox
Your child’s provider will determine their dose of valacyclovir based on your child’s body weight. The typical dose is 20 mg/kg by mouth 3 times daily for 5 days. The maximum recommended dose is 1 gram.
Your dose might differ if you have kidney problems.
Is it safe for me to take valacyclovir?
valacyclovir is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have a hypersensitivity to valacyclovir (e.g., anaphylaxis), acyclovir, or any
component of the formulation.
valacyclovir Common Side Effects
valacyclovir Serious Side Effects
Serious side effects are rare with valacyclovir. Contact your healthcare provider immediately if you experience any of the following.
Blood clotting problems: headache, confusion, dizziness, fever, bleeding in your skin, bruising, tiredness, stomach pain, blood in urine, making less urine
Serious kidney problems: urinating less often than usual, swelling in your feet, ankles, or hands, unexplained weight gain
Effects of other drugs, drug classes and over-the-counter products on valacyclovir
Who makes valacyclovir?
Various FDA-approved generic manufacturers
Is valacyclovir safe in pregnancy?
It is not known if valacyclovir will harm your
unborn baby. You and your doctor will have to decide if you should take valacyclovir while you are pregnant or if you plan to become pregnant.
What to do if you missed your valacyclovir dose
The FDA's medical product safety reporting program for health professionals, patients and consumers.
Learn more about reporting side effectsDrug Savings Tips
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Medical Disclaimer
NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.
The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.
Things to know
What is valacyclovir mainly used for?
Can valacyclovir treat other things?
Can valacyclovir treat other viruses?
Why would someone take valacyclovir every day?
How many days do you take valacyclovir for an outbreak?
Can valacyclovir treat bacterial infection?
Does valacyclovir really work?
Can you drink alcohol with valacyclovir?
Do you have to take valacyclovir everyday for the rest of life?
What should I avoid while taking valacyclovir?
Is it OK to drink alcohol while taking valacyclovir?
Is there any harm in taking valacyclovir?
Are you contagious after taking valacyclovir?
Is it better to take valacyclovir with or without food?
What is the most common side effect of Valtrex?
Can you have an outbreak while taking valacyclovir?
Do antivirals weaken your immune system?
How quickly does valacyclovir work?
What time of day is best to take valacyclovir?
Can you get an outbreak while taking valacyclovir?
What is the most effective way to take valacyclovir?
How do you feel after taking valacyclovir?
Why does valacyclovir make you sleepy?
Does valacyclovir work for anything else?
Is valacyclovir hard on the body?
Can valacyclovir cause weight gain?
What are the two most common adverse effects of antiviral drugs?
Is valacyclovir hard on your heart?
Does valacyclovir fight all viruses?
Are antiviral medications bad for you?
Can too much valacyclovir make you sick?
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