Tramadol – Wikipedia

Tramadol, sold under the brand name Ultram among others, [1] is an opioid pain medication and a serotonin–norepinephrine reuptake inhibitor (SNRI) used to treat moderately severe pain. [12] [16] When taken by mouth in an immediate-release formulation, the onset of pain relief usually begins within an hour. [12] It is also available by …

https://en.wikipedia.org/wiki/Tramadol