Source:http://linkedlifedata.com/resource/umls/id/C0040610
MSH: A narcotic analgesic proposed for severe pain. It may be habituating.,CHV: a pain relieving drug,NCI: A synthetic codeine analogue, Tramadol has central analgesic properties with effects similar to opioids, such as morphine and codeine, acting on specific opioid receptors. Used as a narcotic analgesic for severe pain, it can be addictive and weakly inhibits norepinephrine and serotonin reuptake. (NCI04)