your medical conditions and medicines, and ask if your heart is healthy enough for sex. do not take cialis if you take nitrates for chest pain, or adempas for pulmonary hypertension, as it may cause an uafe drop in blood pressure. do not drink alcohol in excess. side effects may include adache, upset stomach, avoid long-term injy, gemedical help right away for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away. ask your doctor about cialis and a $200 savings card.