Leave a message. Your doctor or pharmacist may prescribe you with the 20mg strength if you have had limited success with the 10mg tablets. If you have tried the 20mg strength on 8 separate occasions with limited success, you may wish to try an alternative ED tablet. Take one tablet with water, before or after a meal food does not affect the absorption of tadalafil. Important note: You should not take more than one tadalafil tablet within a hour period. Tadalafil daily has a continuous effect and avoids scheduling sexual activity for those that wish to have a spontaneous sex life.The lowest price on for generic Cialis (tadalafil) 20 mg is $ per tablet for 88 tablets at PharmacyChecker-accredited online pharmacies. Lowest U.S. Pharmacy Coupon Price: $ per tablet for 90 tablets. Sign up . Brand Cialis Generic Tadalafil No data Form Bottle Box Disp Pack Tablet No data Dosage mg 5mg 10mg 20mg No data Quantity 5 6 10 15 30 90 No data. Compare Cialis prices, print discount coupons, find manufacturer promotions, copay cards and patient assistance programs. See tadalafil prices (from $ for 30 tablets). Cialis prices Oral Tablet. mg Cialis oral tablet. 20 mg Cialis oral tablet. from $2, for 30 tablets. Quantity Per unit Price; $