Cialis online 20mg . Horizontal lines represent the median, the 10th and 90th percentile. Avoid sugar, dairy products, refined foods, fried foods, junk foods, and caffeine. Cheap viagra online. You should connection to your doctor or denote predicament if erection lasts more than 4 hours. The drug Brindley injected into his penis was a non-specific vasodilator, an alpha-blocking agent, and the mechanism of action was clearly corporal smooth muscle relaxation.