Noresterone sildenafil may also be used for other purposes not listed above. 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 Viagra is contraindicated in patients taking another medicine to treat impotence or using a nitrate drug for chest pain or heart problems. This medicine should not be taken by women and children as well as in patients with a known hypersensitivity to any component of the tablet.