Refills: See if you can set up automatic refills or order as needed. If this condition is not treated quickly, tissue damage and permanent loss of the ability to have an erection could result. By comparison, phosphodiesterase-five inhibitors — like sildenafil Viagra or tadalafil Cialis — can lead to improvements of four to eight points, the study authors note. Methodology We researched 19 online platforms for erectile dysfunction treatment to learn more about the process of ordering ED pills online. This increase in blood flow results in a firmer, longer-lasting erection. Most companies have an FAQ or shipping policy page you can reference to learn whether discreet packaging is available.Generic name: sildenafil (oral) [ sil-DEN-a-fil ] Brand names: Revatio, Viagra. Drug class: Impotence agents. Medically reviewed by Sophia Entringer, PharmD. Last updated on Uses. Warnings. Before taking. Dosage. Side effects. Interactions. FAQ. What is Viagra? 50 mg sildenafil oral tablet. from $ for 15 tablets. mg sildenafil oral tablet. from $ for 2 tablets. Sildenafil Coupons, Copay Cards and Rebates. Sildenafil offers may take the form of printable coupons, rebates, savings or copay cards, trial offers, or free samples.  · EXERCISING for at least 30 minutes three times a week can be just as effective as Viagra and similar medications at improving erectile function, according to a new analysis of the best research on.