Weight gain after quitting opiates, is this normal?

Actually, not common: Many people on chronic opioid treatment (like Methadone programs, or pain clinics) actually GAIN weight on opioids, and usually will lose weight after coming off. However, opioids in some people produce a fair amount of nausea and queasiness, which can reduce oral intake, and if this was the case, appetite and eating would increase after quitting. If gain is excessive, cut back on snacks, sugar..