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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]
Recreational Viagra use does happen, and while some men see harmless benefits from the active ingredient in the famous “little blue pill,” they’re still taking a significant risk every time ...
Viagra can help reduce blood pressure in the lungs within its role as a vasodilator — essentially, it can do for your lungs what it does for your privates. Sildenafil lowers blood pressure in ...
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.
An intracavernous (or intracavernosal) injection is an injection into the base of the penis.This injection site is often used to administer medications to check for or treat erectile dysfunction in adult men (in, for example, a combined intracavernous injection and stimulation test). [1]
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.
Erectile dysfunction (ED), also referred to as impotence, is a form of sexual dysfunction in males characterized by the persistent or recurring inability to achieve or maintain a penile erection with sufficient rigidity and duration for satisfactory sexual activity.