Quick Answer: How Long Should You Take Valacyclovir?

Does valacyclovir make you pee a lot?

Drink extra fluids so you will pass more urine while you are using this medicine.

This will keep your kidneys working well and help prevent kidney problems.

To help clear up your infection, keep taking valacyclovir for the full time of treatment, even if your symptoms begin to clear up after a few days..

What medications does valacyclovir interact with?

View interaction reports for valacyclovir and the medicines listed below.acyclovir.Adderall (amphetamine / dextroamphetamine)Advil (ibuprofen)Aleve (naproxen)amoxicillin.Aspirin Low Strength (aspirin)Benadryl (diphenhydramine)cephalexin.More items…

Can I take vitamins with valacyclovir?

Interactions between your drugs No interactions were found between valacyclovir and Vitamin C. This does not necessarily mean no interactions exist. Always consult your healthcare provider.

How long does 500 mg Valtrex stay in your system?

Because valacyclovir is a prodrug, it’s only active in your body for a short period of time after it’s taken. On its own, its half-life is approximately 30 minutes. However, once valacyclovir has converted into acyclovir, it has a half-life of 2.5 to 3.3 hours in people with normal renal function.

Is 7 days of Valtrex enough for shingles?

Valacyclovir (Valtrex): Valacyclovir has been studied in people living with HIV and herpes simplex but not shingles, and is a preferred choice of treatment. It is taken three times a day for 7–10 days. Valacyclovir rarely causes side effects, appears safe to use during pregnancy, and offers better dosing.

Does antiviral kill viruses?

Antiviral drugs are a class of medication used for treating viral infections. Most antivirals target specific viruses, while a broad-spectrum antiviral is effective against a wide range of viruses. Unlike most antibiotics, antiviral drugs do not destroy their target pathogen; instead they inhibit its development.

How long can you take valacyclovir?

For treatment of genital herpes, recurrent outbreaks: Adults—500 milligrams (mg) two times a day for three days. Children—Use and dose must be determined by your doctor.

Can you take valacyclovir everyday?

Valacyclovir, taken daily, reduces the number of outbreaks a person experiences and the number of days that someone sheds the virus asymptomatically.

Is valacyclovir safe long term?

CHARLESTON, S.C. — Once-daily treatment with valacyclovir for the suppression of genital herpes caused by herpes simplex virus type 2 was well tolerated for up to 20 months in a recent study.

Do antivirals weaken immune system?

The inhibitory effects of antivirals on immune cells may contribute to the immune deterioration observed in patients following prolonged use of the drugs.

Can you drink alcohol on valacyclovir?

There are no specific warnings about drinking alcohol while taking Valtrex, but you should speak with your doctor, and it may be best to avoid alcohol when using this treatment. If you drink alcohol while taking Valtrex, it can make the symptoms of the medication worse.

Does Valtrex make you gain weight?

It’s unknown whether Valtrex causes other adverse effects like hair loss, weight gain, dry mouth, or any other symptoms not listed by the United States Food and Drug Administration (FDA). This is not a complete list of side effects. Other side effects may occur.

Does valacyclovir cause liver damage?

Valacyclovir is not considered a liver toxic drug. With a Category D rating from LiverTox, it’s well behind common drugs such as aspirin in terms of liver injury risk. When taken at a normal dose, valacyclovir is highly unlikely to cause liver damage in individuals with normal liver health.

Does acyclovir weaken the immune system?

This medication may rarely cause a life-threatening disorder that affects the blood cells, kidneys, and other parts of the body. This disorder is more likely to occur if you have conditions related to a weakened immune system (such as HIV disease, bone marrow transplant, kidney transplant).

How much Valtrex should I take during an outbreak?

The standard valacyclovir dosage for an outbreak of cold sores is the same as the dosage used for a primary oral herpes outbreak — 2,000 mg of valacyclovir taken every 12 hours, for a total of two doses. Taken early in a cold sore outbreak, this can significantly speed up healing.

Can you build a tolerance to valacyclovir?

Resistance usually develops due to mutations in the thymidine kinase pathway that cause patients to become non-sensitive to acyclovir and its pro-drug valacyclovir, according to Dr. Thimons.

Will Valtrex stop an outbreak?

For the treatment of genital herpes outbreaks, Valtrex, acyclovir (Zovirax), and famciclovir (Famvir) appear to be equally effective. Zovirax is only approved to treat initial and recurrent outbreaks. Compared to Famvir, Valtrex appears to be more effective at suppressing viral shedding when taken daily.

Can you take antivirals everyday?

If you have outbreaks often, you may want to consider taking an antiviral drug every day. Doctors call this suppressive therapy. For someone who has more than six outbreaks a year, suppressive therapy can reduce the number of outbreaks by 70% to 80%.