Quick Answer: Does Viagra Stop Working After A While?

Viagra wears off after two years.

The anti-impotence drug sildenafil (Viagra) may stop working for many patients after two years, the results of a study from the United States have suggested.

Initially, 74% reported that 25-100 mg of the drug enabled them to maintain erections.

Will expired viagra still work?

Most men notice the active effects of Viagra for approximately two to three hours. The drug can work for up to five hours in total, although it usually starts to become less effective and “wear off” after three hours.

How long is viagra good after expiration date?

Most medications expire after 6 months to 2 years. Chuck the pills, get a new prescription and make sure you take note of the “expiration date” which is clearly posted on every prescription.

Can you build up a tolerance to Viagra?

Tolerance to sildenafil has been reported, but so has efficacy for up to 4 years without requirement for dose increase. It is possible that tolerance, if any, is due to progression in the organic pathology responsible for the ED.

Can you take viagra 12 hours apart?

Viagra Dosage

But you can take Viagra anywhere from 30 minutes to four hours before you have sex. This medicine usually shouldn’t be used more than once a day. You can take Viagra with or without food, but if you take it with a high-fat meal, the medicine might take longer to start working.