Buprenorphine is a weak partial mu-opioid receptor agonist and a weak kappa-opioid receptor antagonist used for the treatment of severe pain.[A186283,A186292] It is also commonly used as an alternative to [methadone] for the treatment of severe opioid addicti…

Buprenorphine hemiadipate is under investigation in clinical trial NCT01582347 (Transfer of Subjects From Subutex/suboxone to RBP-6300).

Methadone is a potent synthetic analgesic that works as a full µ-opioid receptor (MOR) agonist and N-methyl-d-aspartate (NMDA) receptor antagonist. As a full MOR agonist, methadone mimics the natural effects of the body's opioids, endorphins, and enkephalins …

Naloxone is an opioid antagonist medication used to block or reverse the effects of opioid drugs, particularly within the setting of drug overdoses which are rapidly becoming a leading cause of death worldwide.[A234594] More specifically, naloxone has a high …

ORP-101 is under investigation in clinical trial NCT04129619 (A Comparison of the Effects of ORP-101 Versus Placebo in Adult Patients With Irritable Bowel Syndrome With Diarrhea (IBS-D)).

V1003 is an intranasal formulation of buprenorphine, an opiate analgesic, for the management of post-operative pain in hospital and home settings. Buprenorphine is a well-known analgesic and the intranasal formulation has the potential to provide a convenient…