If your doctor prescribes Valtrex differently, then you should follow their instructions. Valtrex is most effective when started as soon as symptoms begin, so see your doctor immediately if you have symptoms.
If you miss a dose of Valtrex, you should take the next dose as soon as possible. Look for the expiration date on the prescription label to see how long your particular version of Valtrex is good for. Expired medications can be less effective and risky to take. Some medications are also sensitive to heat, so be sure to store Valtrex at room temperature. This helps your kidneys process it more efficiently. Even though it starts working right away, it may take several days for you to notice a difference in your symptoms.
Acyclovir brand name Zovirax is another antiviral drug that can be used to treat herpes virus and varicella-zoster virus infections. You can compare the medications here.
Skip to main content Search for a topic or drug. Valtrex side effects and interactions, and how to avoid them. Top Reads in Drug Info. Can you mix Trintellix and alcohol? Does hydroxyzine for anxiety work? Do coffee and Zoloft mix? Treating heartburn during pregnancy Oct. Looking for a prescription? Search now! If it still will not stick, then apply a new tablet. If you accidentally swallow the tablet within the first 6 hours of application, drink a glass of water and place a new tablet on your gum.
If the tablet falls off or is swallowed 6 or more hours after application, do not apply a new tablet until your next regular time. Your symptoms should improve during your treatment with acyclovir. Call your doctor if your symptoms do not improve or if they get worse. Take or use acyclovir until you finish the prescription, even if you feel better. If you stop taking acyclovir too soon or skip doses, your infection may not be completely treated or may become more difficult to treat.
The delayed-release buccal tablet is applied as a one-time dose. Acyclovir is also sometimes used to treat eczema herpeticum a skin infection caused by the herpes virus to treat and prevent herpes infections of the skin, eyes, nose, and mouth in patients with human immunodeficiency virus HIV , and to treat oral hairy leukoplakia condition that causes hairy white or gray-colored patches on the tongue or inside of the cheek.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information. Take the missed dose as soon as you remember it and take any remaining doses for that day at evenly spaced intervals. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one. Acyclovir may cause other side effects.
Call your doctor if you have any unusual problems while you are taking or using this medication. Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture not in the bathroom.
It is important to keep all medication out of sight and reach of children as many containers such as weekly pill minders and those for eye drops, creams, patches, and inhalers are not child-resistant and young children can open them easily.
To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location — one that is up and away and out of their sight and reach. Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them.
However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program.
In case of overdose, call the poison control helpline at If the victim has collapsed, had a seizure, has trouble breathing, or can't be awakened, immediately call emergency services at Keep all appointments with your doctor and the laboratory.
Your doctor may order certain lab tests to check your response to acyclovir. Do not let anyone else take or use your medication. Ask your pharmacist any questions you have about refilling your prescription. It is important for you to keep a written list of all of the prescription and nonprescription over-the-counter medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements.
Like with other outbreaks of HSV, valacyclovir will speed up the speed at which cold sores heal, but it can still take seven to 10 days for them to fully disappear.
From cold sores to genital herpes, acting quickly helps you treat and control a herpes outbreak in the shortest amount of time.
For this reason, most doctors recommend using valacyclovir in the first hours after noticing a cold sore or other herpes blister developing. Read about others here. This article is for informational purposes only and does not constitute medical advice. The information contained herein is not a substitute for and should never be relied upon for professional medical advice. Always talk to your doctor about the risks and benefits of any treatment.
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