I have been testing positive for methadone and I have not taken any. Here is the medications that I do take. Albutrol (ventolinHFA),Albuterol-ipratropium (combivent respimat),aspirin 81 mg, atenolol(tenormin), buproion (wellbutrin),diltiazem(cardizem cd),glucosamine-chondroit-vit c-mn,levothyroxine(synthroid), lisinopril (prinivil, zestril),multiple vit-mineral,omega-3 fattyacid,omeprazole (prilosec),oxycodone-acetaminophen (endocet) and cyclobenzaprine (flexeril) Thank you Ken