Tramadol is an inexpensive prescription medicine.
Stimulants ( also referred to as psychostimulants ) is an overarching term that covers many drugs including those that increase activity of the body , drugs that are pleasurable and invigorating , or drugs that have sympathomimetic effects . Tramadol , sold under the brandname Ultram among others , is an opioid pain medication used to treat moderate to moderately severe pain . Tramadol is a synthetic opioid of the benzenoid class ( it contains a benzene ring ) .