How long was Viagra clinical trials?

VIAGRA was evaluated primarily at doses of 25 mg, 50 mg and 100 mg in 21 randomized, double-blind, placebo-controlled trials of up to 6 months in duration, using a variety of study designs (fixed dose, titration, parallel, crossover).

Is Viagra used for medical purposes?

Viagra is now being used to treat not only erectile dysfunction (ED) but also pulmonary hypertension. And the drug may have potential for treating several other conditions, according to a recent report.

How many people were in Viagra trials?

Actual Enrollment :	371 participants
Allocation:	Randomized
Intervention Model:	Parallel Assignment
Masking:	Triple (Participant, Care Provider, Investigator)
Primary Purpose:	Treatment

Is Viagra safe long term?

The drug is widely considered safe and effective. Long term toxicology studies in animals haven’t found any adverse long term health effects of taking sildenafil.

Does Viagra make you bigger?

Sildenafil (brand name Viagra) is a medication for erectile dysfunction (ED). It works by enabling blood flow to the penis by inhibiting an enzyme that causes an erection to deflate. Viagra can make your erection seem firmer and therefore bigger. But it won’t increase the size of your penis permanently.

Who should not take Viagra?

significant uncontrolled high blood pressure. a heart attack. a sudden worsening of heart related chest pain called angina. narrowing of the aortic heart valve.

Why is Viagra called Viagra?

1991: Dr. Nicholas Terrett is named in the British patent for sildenafil citrate, or Viagra, as a heart medication.

How long did it take the FDA to approve Viagra?

Within 6 months of approval by the U.S. Food and Drug Administration (FDA), 5.3 million prescriptions were written for sildenafil citrate. It represented the first clearly effective and FDA-approved oral therapy for the treatment of ED.

What was the original use for Viagra?

Originally Viagra was used for the treatment of heart disease, but during clinical trials it was noticed that it also helped treat erectile dysfunction. In 1998, Pfizer received FDA approval to license the product for the treatment of erectile dysfunction.

What is the maximum dose of Viagra?

Maximum Strength Viagra. According to the FDA’s Prescribing Information, 100 mg is the maximum dose of Viagra that most people can safely take in a single day, if prescribed by their physician.

Was Viagra intended for?

Viagra ( sildenafil ) relaxes muscles found in the walls of blood vessels and increases blood flow to particular areas of the body. Viagra is used to treat erectile dysfunction (impotence) in men. Another brand of sildenafil is Revatio, which is used to treat pulmonary arterial hypertension and improve exercise capacity in men and women.

What is the history of Viagra?

The word Viagra is the brand name for sildenafil citrate and is used to treat erectile dysfunction and pulmonary arterial hypertension. Originally developed by scientists in the United Kingdom, it was brought onto the market by Pfizer Inc ., a pharmaceutical company in the United States.

How long was Viagra clinical trials? VIAGRA was evaluated primarily at doses of 25 mg, 50 mg and 100 mg in 21 randomized, double-blind, placebo-controlled trials of up to 6 months in duration, using a variety of study designs (fixed dose, titration, parallel, crossover). Is Viagra used for medical purposes? Viagra is now being used…