Basing on erectile dysfunction causes, a man can be prescribed different drugs that increase potency. All potency drugs are divided into three groups, there are also popular erectile dysfunction natural remedies. Below in the article: Best drugs for erectile dysfunction: Viagra, Cialis, Levitra; How to choose drugs for potency; Erectile dysfunction natural remedies. Best drugs for erectile dysfunction: Viagra, Cialis, Levitra The most popular group of high potency drugs are inhibitors of the enzyme phosphodiesterase-5 (PDE5 inhibitors). They block this enzyme and increase the blood supply to the penis. These drugs have advantages and disadvantages. Let’s review each PDE5 inhibitor in …