Always buy your ED medications from a reputable supplier as there are a lot of counterfeit products on the market. Certain lifestyle and psychological factors, such as smoking, drinking, and stress, can impact on ED. Eliminating these – for example, staying more active, losing weight if you are overweight, reducing alcohol intake, stopping smoking and reducing stress – may also help improve ED. Do not take VIAGRA (sildenafil citrate) if you: take any medicines called nitrates, often prescribed for chest pain, or guanylate cyclase stimulators like Adempas (riociguat) for pulmonary hypertension. Your blood pressure could drop to an unsafe level …