If you drink a large amount of alcohol more than five glasses of wine or five shots of whiskey while you are taking tadalafil you are more likely to experience certain side effects of tadalafil such as dizziness, headache, fast heartbeat, and low blood pressure. Insurance can help you save even more on consultations and medications. While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. If you have certain health conditions or are taking certain medications, your doctor may tell you to take tadalafil less often or may prescribe a lower dose to be taken once a day. Symptoms may include sudden urges to urinate urgency , difficulty in starting urination hesitancy , a weak urine stream, and more frequent urination — especially at night. They have the same benefits and risks as their brand-name counterparts.Cialis comes as a tablet you swallow. It contains the active ingredient tadalafil. (An active ingredient is what makes a drug work.) Keep reading for details on . If you do experience chest pain, get medical help right away. Make sure to tell your medical team when you took your last dose of tadalafil (Cialis). This information . 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. It is taken by mouth. Onset is typically within half an hour and the duration is up to 36 hours. Common side effects include headache, muscle pain, .