Scientists are working with three compounds that show promise in treating pain, without the side effects of opioids, CNBC reports.
One experimental drug, oliceridine, is in the final stages of human trials. It is administered intravenously. Studies show the drug relieves pain like morphine, without causing respiratory depression or constipation. However, it is no less addictive than morphine and it can only be used in hospitals. The company that makes oliceridine, Trevana, is developing an oral form of the drug.