These berries are packed with vitamin C and other essential nutrients that support the body’s natural stress response system. The decision, Teva Canada Ltd. By improving blood flow during arousal, L-Arginine has shown promising results in treating mild to moderate cases of erectile dysfunction. It’s important to monitor your body’s response and discontinue use if any adverse reactions occur. It’s available in 50 mg, mg, and mg tablets.Drug Facts Common Brands Viagra Drug Class PDE-5 inhibitor Controlled Substance Classification Not a controlled medication Generic Status Lower-cost generic . Sildenafil (Viagra) is a phosphodiesterase-5 (PDE-5) inhibitor. PDE-5 is a protein in your body that breaks down the molecules that normally cause an erection. . Sildenafil (Viagra, Revatio) is a moderately priced drug used to treat erection problems in men. It is also used to treat pulmonary arterial hypertension, a serious heart and lung test1.ru drug is more popular than comparable drugs. It is available in generic and brand versions. Generic sildenafil is covered by most Medicare and insurance plans, but .