Opioids are a class of drugs that include pain relievers, available legally by prescription. Opioids work like opiates, e.g. morphine and codeine, but they are not made from opium.
Opioids are a class of drugs that include pain relievers, available legally by prescription. Opioids work like opiates, e.g. morphine and codeine, but they are not made from opium.