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Sildenafil’s role as a PDE5 inhibitor might help prevent the thickening of heart muscles, a feature that makes it difficult to pump blood. Viagra has also shown real promise for increasing the ...
Sildenafil citrate, the active ingredient in Viagra, is a PDE5 inhibitor. Phosphodiesterase type 5 is an enzyme that’s found in the smooth muscle cells of blood vessels and helps regulate blood ...
Viagra (or sildenafil) lasts three to five hours after it’s consumed. Cialis (tadalafil) has a half-life of 17.5 hours, meaning this drug lasts up to 36 hours after it’s consumed.
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] It is unclear if it is effective for treating sexual dysfunction in females. [8]
Homosildenafil (also known as methyl-sildenafil) is a synthetic drug which acts as a phosphodiesterase inhibitor. [1] It is an analog of sildenafil and vardenafil. Homosildenafil was first identified as an adulterant in sex enhancement products in 2003 and was more recently detected in dietary supplements. [2] [3] [4] [5]
[2] The name "herbal viagra" is taken from the brand name Viagra, under which drug company Pfizer sells sildenafil citrate, a drug used to treat erectile dysfunction. [3] Viagra has become a generic term for many people discussing drugs designed to treat erectile dysfunction, even those which do not contain sildenafil. [4]
Viagra is the brand-name version of a medication called sildenafil citrate. It belongs to a class of drugs called phosphodiesterase 5 inhibitors, more commonly known as PDE5 inhibitors.
Sildenafil is most commonly prescribed to be taken one time per day in doses between 25 and 100 mg for ED. Your healthcare provider will determine the best dosage for you based on a number of factors.