Updated on Key takeaways: Cialis (tadalafil) is an oral medication that treats erectile dysfunction (ED). One dose of Cialis lasts longer than a dose of the well-known .Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours. The most common symptoms of erectile dysfunction include difficulty achieving or maintaining an erection and reduced sexual desire. When the blood vessel muscle cells relax, this expands the vessel and increases blood flow; this effect is referred to as vasodilation. It may be difficult to remain firm despite wanting to have sex. Those who don’t feel comfortable discussing ED with an in-person provider or lack time to visit a doctor’s office may find online ED prescriptions beneficial. However, others work on a cash-pay basis and don’t partner with insurance companies.Compare prices and print coupons for Sildenafil (Generic Revatio and Viagra) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ The lowest GoodRx price for the most common version of Sildenafil is around $, 95% off the average retail price of $ Read more about Sildenafil. It depends on which coverage stage you are in. Click on a tab below. Deductible. Post-Deductible. Donut Hole. Post-Donut Hole. Copay Range. $1 – $ After your deductible has been satisfied, you will enter the Post-Deductible (also called Initial Coverage) stage, where you pay your copay and your plan covers the rest of the drug cost. Price: Remove Qty: + $ Qty: + Remove $ Pineider Homage to Arman Fountain Pen – Black Aluminum (Limited Edition).ED occurs more frequently in older men. For this purpose, one dose works for up to 72 hours. Cialis tadalafil : This ED medication works with the same principle as Viagra, but lasts up to 36 hours. People with heart conditions should never take ED medications without consulting a doctor. In trials of the drug, individuals taking Cialis saw a significant reduction in the frequency and urgency of urination and improved urine flow.