Question: how long has naltrexone been on the market?
Answer: Naltrexone was first synthesized in 1963 by Endo Laboratories, which was acquired by DuPont in 1969. Naltrexone was initially developed to treat addiction to opioids and was approved by the U.S. Food and Drug Administration (FDA) for the treatment of addiction to drugs such as heroin, morphine, and oxycodone in 1984.