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View of a blue Viagra pill
Description:
Viagra. View of a 50 mg blue Viagra pill. Viagra is the trade-name for the drug sildenafil citrate, which is used to treat erectile dysfunction, a form of male impotence. It is the first oral pill for impotence. It does not cause penile erections directly, but instead affects the response to sexual stimulation. It enhances the smooth muscle relaxant effects of nitric oxide, a substance normally released in response to sexual stimulation. Smooth muscle relaxation allows blood to enter the penis, leading to an erection. Viagra is made by Pfizer Pharmaceuticals.
Credit:
Saturn Stills/Science Source
Unique identifier:
SS2170143
Legacy Identifier:
SD1628
Type:
Image
Size:
2717px × 3603px (~28 MB)
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Tags
drug
erectile dysfunction
impotence
M625/798
M6250798
male impotence
medicine
pharmaceutical
pill
sildenafil citrate
treatment
viagra pill
