Brand: Sildenafil Pfizer Active Ingredient: Sildenafil Citrate Treatment: Erectile Dysfunction Manufacturer: Pfizer Country of Manufacture: USA, Multinational Review and Description Sildenafil Pfizer belongs to a class of phosphodiesterase 5 (PDE5) inhibitors medical drugs used in the treatment of erectile dysfunction. An increase of the PDE5 enzyme debilitates the natural vasodilatation necessary to sustain a satisfactory […]