September 25, 2021
Term: Pulmonary arterial hypertension (PAH)
Things you need to know about viagra
August 3, 2021
How it works Viagra is a brand name for the medication sildenafil. Sildenafil hinders the activity of an enzyme known as cGMP-specific PDE-5 (phosphodiesterase type-5). This enzyme separates cGMP, a substance...
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