What else should I know about Tramadol? Tramadol is popular for its primary function as a painkiller. And it is widely used in hospitals and even at homes daily. The medicine is available in multiple doses as well. But many people use it as off-label, and if you want to buy Tramadol online you must read below.  What is Tramadol used to treat? Tramadol is the brand name of Ultram. And Tramadol Rx helps to manage moderate and severe body pain as it acts in the central nervous system to calm the body.  Also, It is one of the most reliable and prompt medicines to cure the problem. But, on the other hand, Tramadol is the opioid pharmaceutical drug that belongs to it and can cause dependence and dependence.