The present disclosure is directed to modulators of opiate- and/or NMDA receptors and pharmaceutically acceptable salts and prodrugs thereof, the chemical synthesis thereof, and the use of such compounds for the treatment and/or management of pain, anxiety, neurodegeneration, drug dependence, coughing, muscular tension, and/or glaucoma and any other condition in which it is beneficial to modulate an opiate- and/or NMDA receptor.