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Sildenafil, sold under the brand name Viagra among others, is a medication used to treat erectile dysfunction and pulmonary arterial hypertension. [ 4 ] [ 8 ] It is also sometimes used off-label for the treatment of certain symptoms in secondary Raynaud's phenomenon . [ 9 ]
In fact, studies show that just one dose of Viagra has a 70 to 80 percent success rate for treating ED. PDE5 stands for phosphodiesterase type 5, an enzyme that plays an important role in ...
Viagra or sildenafil, the active ingredient and generic version, is a PDE-5 inhibitor that widens blood vessels inside the member to allow better blood flow for stronger or longer-lasting arousal.
Taking it with food, particularly high-fat foods like a burger and fries, can slow it down or even make it less effective. Stendra (avanafil) is a faster-acting ED medication. This one can start ...
Chemical structure of sildenafil (Viagra), the prototypical PDE5 inhibitor. A phosphodiesterase type 5 inhibitor (PDE5 inhibitor) is a vasodilating drug that works by blocking the degradative action of cGMP-specific phosphodiesterase type 5 (PDE5) on cyclic GMP in the smooth muscle cells lining the blood vessels supplying various tissues.
Until 2014, the U.S. Code of Federal Regulations required that certain drugs and biological products be labelled specifically with respect to their effects on pregnant populations, including a definition of a "pregnancy category". These rules were enforced by the FDA, and medications that have been studied for their effects in pregnancy fell ...
Viagra could lead to more serious side effects, such as: Priapism (a painful, long-lasting arousal) Vision loss. Chest pain. Flu-like symptoms. Heart attack. Stroke. Dizziness. Sudden low blood ...
Pregnancy rates for sexual intercourse are highest during the menstrual cycle time from some 5 days before until 1 to 2 days after ovulation. [16] For optimal pregnancy chance, there are recommendations of sexual intercourse every 1 or 2 days, [17] or every 2 or 3 days. [18]