<p>Introduction:<br /> Viagra, also known by its generic name sildenafil, has become a household name since its introduction in the late 1990s. Initially developed to treat hypertension and angina pectoris, this
<p>Introduction:<br /> Viagra, also known by its generic name sildenafil, has become a household name since its introduction in the late 1990s. Initially developed to treat hypertension and angina pectoris, this