Alternatively, Cialis may be prescribed as an as-needed treatment for ED, to be taken before sexual activity. Generic vs. You should also call your insurance company to see if they cover erectile dysfunction medications. This increase in blood flow results in a firmer, longer-lasting erection. Finally, we checked customer reviews to better understand user experiences with each platform.Prices vary greatly depending on which medication you’re prescribed. Generic versions cost much less than the brand-name options, and insurance isn’t accepted. Generic Viagra (sildenafil): Starting at $24/month; Generic Cialis (tadalafil): Starting at $39/month; Generic Cialis Daily (tadalafil): Starting at $89/month; Branded Viagra: . The cost for Cialis oral tablet mg is around $ for a supply of 30 tablets, depending on the pharmacy you visit. Quoted prices are for cash-paying customers and are not . Cialis takes from 30 minutes to 2 hours to take effect. It can last up to 36 hours. Cialis is a PDE5 inhibitor medication approved for use for erectile dysfunction (ED) and benign prostatic.