Refills: See if you can set up automatic refills or order as needed. Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours. When the blood vessel muscle cells relax, this expands the vessel and increases blood flow; this effect is referred to as vasodilation. Some services offer a subscription option where they’ll send your medications every month at a discount. According to the FDA, generic medications contain the same active ingredients as brand names, meaning there’s no difference in effectiveness or safety. Psychological factors like stress, depression, or anxiety can also contribute. Do you know what you need and are ready to purchase?A generic version of Cialis is available. See tadalafil prices (from $ for 30 tablets Cialis prices mg Cialis oral tablet from $ for 30 tablets 5 mg Cialis oral tablet . How to save on generic Cialis There are many ways to save on Cialis, which is available as both a brand-name and generic medication. Save with GoodRx. GoodRx can help you save over 97% off the average retail price of the generic version. Generic Cialis at certain pharmacies is less than $13 with a free GoodRx discount. How Cialis Works. Tadalafil and other PDE5 inhibitors primarily work by inducing muscle relaxation. Tadalafil stops the breakdown of a chemical responsible for relaxing muscles. In ED and PAH, the drug targets muscle cells in blood vessels. When the blood vessel muscle cells relax, this expands the vessel and increases blood flow; this .