N-L-.alpha.-aspertyl-L-phenylalanine 1-methyl ester and/or its derivatives has been found to have analgesic pain relieving properties in both humans and animals. It has been found to be especially effective in relieving pain associated with osteoarthritis and multiple sclerosis. It can be administered by itself or in combination with other analgesics. When given in combination with other analgesics, N-L-.alpha.-aspartyl-L-phenylalanine 1-methyl ester and/or its derivatives helps to alleviate the detrimental side effects of other analgesic medications by lowering the dosage requirements for pain relief.
ANALGESIC USE OF N-L-.ALPHA.-ASPARTYL-L-PHENYLALANINE 1-METHYL ESTER