Erectile dysfunction is a condition where the penis does not harden and expand when a man is sexually excited, or when he cannot keep an erection. This will increase the supply of blood to the lungs and reduce the workload of the heart. Patients with known hereditary degenerative retinal disorders, including retinitis pigmentosa, were not included in the clinical trials, and use in these patients is not recommended. When a man is sexually stimulated, his body’s normal response is to increase blood flow to his penis to produce an erection. Stepwise increase in alpha-blocker dose may be associated with further lowering of blood pressure when taking a PDE5 inhibitor. When administered in combination with aspirin, tadalafil 20 mg did not prolong bleeding time, relative to aspirin alone. The dose may be increased to 20 mg or decreased to 5 mg, based on individual efficacy and tolerability.The recommended starting dose of CIALIS for use as needed in most patients is 10 mg, taken prior to anticipated sexual activity. The dose may be increased . Cialis is a medication approved by the Food and Drug Administration (FDA) often used to treat erectile dysfunction (ED) and benign prostatic hyperplasia (BPH) in . Drug Images Cialis (tadalafil) is a brand-name drug that’s prescribed for erectile dysfunction (ED) and benign prostatic hyperplasia (BPH). Cialis comes as an .