Its a dog...or a cat...your choice

No. Suboxone does not have naltrexone in it. Suboxone is the trade name for the mixture of buprenorphine and naloxone in a 4 to 1 ratio. Buprenorphine is a partial agonist at the opioid receptor. Naloxone is an antagonist or "blocker" of the same receptor. Naltrexone is an opioid receptor antagonist used primarily in the management of alcohol dependence and opioid dependence.

An opioid is a naturally occurring compound that will bind to opioid receptors within your body. When an opioid receptor is blocked by an opioid a person is likely to feel less pain.

mu, kappa, and delta receptors!

OGFR stands for "Opioid Growth Factor Receptor"