Quick Answer: How Long Does Valtrex Take To Work To Prevent Transmission?

Does suppressive therapy reduce transmission?

One study of valacyclovir showed that taking suppressive therapy can reduce the chances of transmitting the virus by approximately one-half..

Can you have a breakout while on Valtrex?

Even if you’re taking Valtrex, it’s still possible to have an outbreak. If you’re taking Valtrex for recurrent genital herpes and have an outbreak, it’s important to avoid sexual contact with your partner to keep the virus from spreading to them.

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.

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 effective is Valtrex in preventing transmission?

Only 14 (1.9%) became infected with the virus, 4 of whom developed an outbreak. This is compared to 27 in the placebo group who became infected. The results of the study showed that taking Valtrex 500 mg daily led to a reduction in the transmission of gential HSV-2 to the uninfected partner.

How much does valtrex reduce risk of transmission?

The study showed that once-daily suppressive therapy with Valtrex 500 mg caplets reduced the risk of transmission of symptomatic genital herpes by 75 percent versus placebo (0.5 percent on Valtrex vs 2.2 percent on placebo).

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).

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 I drink alcohol while taking Valtrex?

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.

How much Valtrex do I take for an outbreak?

The standard dosage of valacyclovir for managing a primary oral herpes outbreak is 2,000 mg every 12 hours for one day (two doses in total). During a particularly severe or persistent outbreak, your doctor may recommend adjusting your valacyclovir dose or extending the dosage to provide greater relief.