Quick Answer: How Many Days Should I Take Valacyclovir?

How many 500mg Valtrex can I take?

The dose is 500 mg of Valtrex to be taken twice daily (1000 mg total daily dose).

This dose should be reduced according to creatinine clearance (see Renal impairment below).

For recurrent episodes, treatment should be for three to five days..

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.

Do antivirals weaken immune system?

Whereas AZT, ribavirin, or ganciclovir were antiproliferative, ddI or acyclovir had little, if any, effect on PBMC mitogenesis. The inhibitory effects of antivirals on immune cells may contribute to the immune deterioration observed in patients following prolonged use of the drugs.

Does valacyclovir make tired?

Valacyclovir oral tablet doesn’t cause drowsiness, but it can cause other side effects.

Does antiviral kill viruses?

Antivirals work to prevent viral infection and spread Antivirals treat infections by preventing the virus from spreading throughout your body. In other words, they don’t kill the virus, outright, which makes developing antivirals tricky.

Does Valtrex weaken your immune system?

However, because they suppress the immune system, these medicines also suppress the ability of the body to fight infection. Valaciclovir is therefore given to people who have received an organ transplant, in order to help the body kill off any CMV virus.

How long after taking Valtrex are you not contagious?

When taken as soon as you notice a herpes outbreak, valacyclovir can provide relief in as little as two to three days, minimizing symptoms and reducing the risk of you passing genital herpes to sexual partners.

Does acyclovir weaken 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).

Can I drink alcohol while taking valacyclovir?

Doctors recommend not to consume alcohol while taking valacyclovir, as the combination of valacyclovir and alcohol can potentially lead to an excessive, dangerous level of dizziness or drowsiness.

Is it too late to take Valtrex?

Even if symptoms fully abate, valacyclovir should be taken until the prescribed course has been completed. Best started within 24-48 hours of symptom onset.

How long should you take valacyclovir?

Adults—500 milligrams (mg) two times a day for three days. Children—Use and dose must be determined by your doctor.

How long does it take for valacyclovir to start working?

For most initial herpes outbreaks and cases of recurring herpes, valacyclovir takes effect very quickly and provides some level of relief in as little as two to three days. Generally, the sooner you take valacyclovir after noticing symptoms, the faster it will be to provide relief.

Is it safe to take Valtrex every day?

A new study shows that daily therapy with the antiviral drug Valtrex significantly lowers the risk of transmitting genital herpes among heterosexual couples in which one partner is infected with the herpes simplex virus type 2 (HSV-2).

Will 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.

Can I take 2 grams of Valtrex at once?

For adults and children 12 years and older. The recommended dosage is 2 grams twice daily, taken 12 hours apart, for one day. Valtrex should be started at the earliest signs of a cold sore.

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.

Can 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.

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.

Are antivirals safe?

“Antivirals are safe, they’re well tolerated, and the evidence suggests that they may result in a lower rate of complications and hospitalizations from influenza,” says infectious disease expert Dr. Raphael Dolin, Maxwell Finland Professor of Medicine, Microbiology, and Molecular Genetics at Harvard Medical School.