Cialis 20mg Tablets are a prescription medication containing the active ingredient tadalafil 20 mg, widely used in the treatment of erectile dysfunction (ED) in adult males. Cialis may be prescribed to improve symptoms associated with benign prostatic hyperplasia (BPH), such as difficulty urinating and, in select cases, to support treatment of pulmonary arterial hypertension, under strict medical supervision. Always take this medication exactly as prescribed and consult a healthcare professional if you have any underlying health conditions or are taking other medicines that could interact with tadalafil.