However, others work on a cash-pay basis and don’t partner with insurance companies. Erectile dysfunction can be caused by a variety of factors , including age, cardiovascular problems, diabetes, and other conditions that affect nerve function or blood flow. Your health information should remain between your provider and yourself. Vardenafil usually works for 4 to 5 hours. As with sildenafil, a high-fat meal or alcohol keep the body from absorbing it as quickly. Viagra is also informally known as “vitamin V”, “the blue pill”, or “blue diamond”, as well as various other nicknames. Some services offer a subscription option where they’ll send your medications every month at a discount.There are four types of ED pills on the market, including sildenafil and tadalafil, often known by their brand names, Viagra and Cialis. We compare ED pills in terms of effectiveness, . The four main medicines taken by mouth for erectile dysfunction are: Avanafil (Stendra). Sildenafil (Viagra). Tadalafil (Cialis). Vardenafil. These medicines are called PDE5 . ED Surgery. Cialis, Levitra, Staxyn, and Viagra to Treat ED. Alprostadil for ED. New ED Treatments. Testosterone Replacement Therapy for ED. Alternative Remedies for ED. .