Try bone broth - I've been working my way off opiates after being on them for 19 years (I'm OFF 90 mgs of Methadone!). Your gut is severely compromised on them, and needs rebuilding. You can BONE broth (not chicken stock) online
(Swanson) or at Whole Foods, or make your own. Get chicken backs and necks from healthy chickens (I buy Amish) roast them in oven, put in crock pot, cover with water, put in 2 TBsp organic Apple Cider Vinegar. First couple hours remove scum that floats to surface. Cook 48 hours on low. Then drain the water (broth) and put in glass jars in fridge. My crock pot makes enough for a week. Drink 1 cup twice a day, skimming fat off top before heating. Helps SO much! I've been drinking it for several months - full of minerals and healthy fats. Drink in health!