Vasodilation and Blood Flow: L-arginine promotes vasodilation, relaxing the blood vessels and improving blood flow. These include herbs like ginseng and maca, supplements like L-arginine and DHEA, and dietary changes such as increasing your intake of foods like dark chocolate and oysters. According to studies, consumption drops off significantly after the first use. After all, a name or syllable that might make sense in the U. Summary There are limits to bringing prescriptions purchased at a Mexican pharmacy into the United States.The Savings Offer and Program expire on 12/31/ For further information, call , visit , or write: Viatris Inc., P.O. Box , Mission, KS If your pharmacy does not participate, you may be able to submit a request for a rebate in connection with this Savings Offer. If you have these symptoms, stop taking VIAGRA and contact a doctor right away. have or have had heart problems such as a heart attack, irregular heartbeat, angina, chest pain, narrowing of the aortic valve, or heart failure. have low blood pressure, or high blood pressure that is not controlled. Sildenafil (Viagra) is used to treat erectile dysfunction (impotence; inability to get or keep an erection) in men. Sildenafil (Liqrev, Revatio) is used to improve the ability to exercise in adults (Liqrev, Revatio) and children 1 year of age and older (Revatio) with pulmonary arterial hypertension (PAH; high blood pressure in the vessels carrying blood to the .