These include itraconazole Sporanox, Tolsura , ketoconazole Extina, Ketozole, others and ritonavir Norvir. They enhance the effects of a chemical the body makes that relaxes muscles in the penis, called nitric oxide. Related Videos Related Content. We looked at one study of men with ED and found that roughly half of the men surveyed would do “nearly anything” to treat their erectile dysfunction. In recent years, we’ve seen several direct-to-consumer online pharmacies emerge that offer free online consultation that usually consists of a questionnaire, and then they’re able to obtain a prescription for erectile dysfunction medications to be purchased through their site.Tier 4 and 5 specialty drugs are limited to a day supply; only one fill allowed. All refills must be obtained from the Specialty Drug Pharmacy Program. Tier 1 (Generics): $ copay for up to a day supply; $ copay for a 31 to day supply Tier 2 (Preferred brand): 30% of our allowance Tier 3 (Non-preferred brand): 50% of our allowance. The company says that this ED ring provides optimal levels of tension and stimulation. It is available in four sizes, and the company offers free resizes to help people find the right fit. However. 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, .