tadalafil, an impotence agent. ▪ INDICATIONS: This drug is used in the treatment of erectile dysfunction. ▪ CONTRAINDICATIONS: Known hypersensitivity to this drug prohibits its use. Patients who are taking organic nitrates either regularly or intermittently and patients taking any alpha-adrenergic antagonist other than tamsulosin (0.4 mg once daily) should not take this drug. ▪ ADVERSE EFFECTS: Adverse effects of this drug include back pain or myalgia, blurred vision, changes in color vision, and pruritus. Life-threatening side effects include myocardial infarction, cardiovascular collapse, and sudden death. Common side effects include headache, flushing, dizziness, dyspepsia, nasal congestion, urinary tract infection, and diarrhea.
