Generic vs. We also looked at additional services, such as access to digital pharmacies and home delivery options. Both options require valid medical documentation, but some online services only require a health questionnaire to be filled out and reviewed for approval—meaning no face-to-face video interaction is needed. People with heart conditions should never take ED medications without consulting a doctor. There are many safe, reliable online services offering ED prescriptions. Most companies have an FAQ or shipping policy page you can reference to learn whether discreet packaging is available. Most erectile dysfunction medications belong to the drug class known as PDE5 inhibitors , which help relax the muscles and increase blood flow to allow for a full erection.GoodRx can help you save over 80% off the average retail price of the generic versions. Generic sildenafil at certain pharmacies is as low as $ with a free GoodRx discount. You can also find generic tadalafil and vardenafil for as low as $ and $ , respectively.  ·. Nitric oxide diffuses inside your blood vessels and stimulates the formation of another molecule called cGMP. cGMP relaxes the blood vessels in your penis and allows more blood to flow into its. Generic Levitra Availability. Last updated on Levitra is a brand name of vardenafil, approved by the FDA in the following formulation(s): LEVITRA (vardenafil hydrochloride – tablet;oral) Manufacturer: BAYER HLTHCARE Approval date: August 19,