Insurance can help you save even more on consultations and medications. Levitra vardenafil : This medication is taken one hour before sex and can last up to 24 hours. Tadalafil tablets work by increasing the flow of blood to the penis when a man is sexually stimulated. Read our editorial process. If you feel that you require a stronger dose, you should speak to your doctor or pharmacist about increasing the dose to 20mg.Compare prices and print coupons for Tadalafil (Cialis) (Generic Cialis) and other drugs at CVS, Walgreens, and other pharmacies. Prices start at $ Prescription 5mg tadalafil (Cialis) (30 tablets) edit. Choose your pharmacy. moses lake, WA. Safeway. Walmart. Walgreens. Rite Aid. Buy online with free shipping. Adelaide Apothecary. Tadalafil is used to treat male sexual function problems (impotence or erectile dysfunction-ED). Learn more about Cialis oral. 1. This is a generic drug. The average cost for 30 Tablet(s), 5mg each of the generic (tadalafil) is $ You can buy tadalafil at the discounted price of $ by using the MDRx coupon, a savings of 93%. Generic Cialis (tadalafil): starting at $40 per month (5mg, 10mg, 20mg) Daily generic Cialis (tadalafil): starting at $40 per month (mg, 5mg) Product details.