How much does imigran cost sildenafil may also be used for other purposes not listed above. The recommended dose of Cialis is 20 mg it should be taken at least 16 minutes before the sexual activity. The effect persists for 36 hours. Take Cialis once daily and do not exceed the recommended dose. You can not appoint tramadol in acute alcohol intoxication (poisoning); patients with hypersensitivity to narcotic analgesics; patients taking MAO inhibitors. A pregnant appointment should be made with extreme caution. Children under the age of 14 do not prescribe the drug.