It works to treat erectile dysfunction by increasing blood flow to the penis during sexual stimulation. Tadalafil is sometimes taken as needed, usually at least 30 minutes before sexual activity and not more often than once every 24 hours. If you take nitrates in any form, or are on treatment for pulmonary hypertension , you should not take tadalafil. Sexual activity may be a strain on your heart, especially if you have heart disease. Cialis is not recommended for people taking any form of nitroglycerin because the combination may lower blood pressure to an unsafe level.Tadalafil – STADA T20 – 20 Milligramm. Tadalafil, sold under the brand name Cialis among others, is a medication used to treat erectile dysfunction, benign prostatic hyperplasia, and pulmonary arterial hypertension. [4] [5] [7] It is taken by mouth. [7] Onset is typically within half an hour and the duration is up to 36 hours. 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%. Even if this drug is covered by Medicare or your insurance, we recommend you compare prices. Is the price for Cialis mg tablets more than for lower doses of the drug? Cialis comes in several different strengths, including: milligrams (mg) 5 mg; 10 mg; 20 mg.