Suboxone 8 mg contains 8 mg of buprenorphine hydrochloride and 2mg of naloxone hydrochloride dihydrate. Buprenorphine is a partial agonist that affects the mu-opioid receptor and an antagonist acting at the kappa-opioid receptor while Naloxone is an antagonist working at the mu-opioid receptor. https://actionpills.com/product/suboxone-8-mg/