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Generic sildenafil (and brand-name Viagra) is a medication for the treatment of ED, Raynaud’s phenomenon, and pulmonary arterial hypertension. To understand how Viagra works, we need to look at ...
Sildenafil is a prescription drug also used to treat pulmonary arterial hypertension, ... 25 to 100 milligrams (mg). A typical starting dose of Viagra or sildenafil dosage is 50 milligrams.
Life-threatening problems can result when drug interactions between your daily medications cause side effects, and nowhere might that be more clear than with Viagra and high blood pressure.
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]
Since it was originally used as a treatment for pulmonary hypertension (a form of high blood pressure in the lungs) and functions as a vasodilator that increases blood flow to the lungs ...
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.
How Effective is Sildenafil 100mg? Sildenafil works well for most men with ED at any dosage, although the highest 100mg dosage produces improvements for a greater percentage of men than 50mg or 25mg.
Tadalafil (marketed as Cialis) is a PDE5 inhibitor used to treat erectile dysfunction [23] and pulmonary arterial hypertension. [24] It has a longer half life than sildenafil of 17.5 hours, allowing it to be taken once a day. [24] Tadalafil "daily" (5 mg) is also used for treatment of benign prostate hyperplasia. [25]