Your health information should remain between your provider and yourself. We considered cost, medications available, and whether generic versions were offered to help reduce costs. Insurance can help you save even more on consultations and medications. More serious side effects may include a drop in blood pressure or an erection that lasts longer than four hours. You can report an adverse event either online, by regular mail or by fax, using the contact information at the bottom of this page. Stendra avanafil : This is an as-needed medication taken 30 minutes before sex and can last up to six hours.GoodRx Health. Promotion disclosureinfoPromotion disclosureinfo. Save up to 97% on tadalafil cialis with GoodRxDifferent pharmacies offer different prices for the same medication. GoodRx helps find the best price for you. See all couponsSee all tadalafil cialis prices. Promotion disclosureinfoPromotion disclosureinfo. The most common side effects with Cialis are: headache, indigestion, back pain, muscle aches, flushing, and stuffy or runny nose. These side effects usually go away after a few hours. Men who get back pain and muscle aches usually get it 12 to 24 hours after taking Cialis. Back pain and muscle aches usually go away within 2 days. Hims and Roman offer brand-name and generic medications for ED, such as Viagra (sildenafil), Cialis (tadalafil), and avanafil. Whether those medications work for ED depends on the person and.