50 years ago, a promising agent pulled

Excerpt from the January 8, 1966 issue of Science News Letter

DMSO future dimmed — Clinical testing of the experimental drug [DMSO, short for dimethyl sulfoxide] was halted by voluntary agreement of the drug’s sponsors … the action was taken because of undesirable side effects that were observed in the eyes of laboratory animals … Telegrams have been sent to approximately 1,000 doctors who have been testing this compound on many human patients, mainly for … arthritis and bursitis pain.