Order imitrex sildenafil is applied for the treatment of erectile dysfunction (impotence) in men and pulmonary arterial hypertension. You can assign tramadol in the form of rectal (for introduction into the rectum) candles containing 0.1 g (100 mg), 1 candle up to 4 times per day. When administered intravenously, it has an analgesic effect in 5-10 minutes, when administered orally – in 30-40 minutes. Valid for 3-5 hours If you think you have used too much of this medicine seek emergency medical attention right away. The symptoms of overdose usually include chest pain, nausea, irregular heartbeat, and feeling light-headed or fainting.