Ketamine is general anesthetic agent prescribed for the induction and maintenance of anesthesia for short procedures and for some diagnostic purposes. It is a prescription drug which induces a state usually referred to as dissociative anesthesia.
Azathioprine is an immunosuppressant agent prescribed for treating severely active rheumatoid arthritis and to prevent transplant rejection in patients who received kidney transplants. It is also recommended to treat other autoimmune disorders.
Tramadol is an opioid or narcotic analgesic drug prescribed for treating moderate to severe pain such as post-operative pain, cancer pain, low back pain, pain and inflammation of the joints, pain due to serious injury, or severe dental pain.