is codeine a partial agonist
Examples of full agonists are oxycodone, methadone, codeine, heroin and morphine. PARTIAL AGONISTS. Partial agonists are drugs that bind primarily to mu opioid receptors and cause them to produce endorphins but to a much lesser extent than full agonists. BuprenorphineÂ®, SuboxoneÂ® and SubutexÂ® are partial agonists.