Piestrzeniewicz MK. et al "Opioid receptors and their selective ligands"   Postepy Biochem. 2006;52(3):313-9
Kaczor A. et al "Non-peptide opioid receptor ligands - recent advances. Part I - agonists"   Curr Med Chem. 2002 Sep;9(17):1567-89
Greco MA. et al "Opioidergic projections to sleep-active neurons in the ventrolateral preoptic nucleus"   Brain Res. 2008 Dec 15;1245:96-107
†The statements on this Web site have not been evaluated by the Food and Drug Administration (FDA). And are not intended to diagnose, treat, cure or prevent disease. The information presented is not intended to replace medical advice or treatment from your own doctor or healthcare provider. Nothing presented here is intended as a substitute for prescription medication or any other medical treatment prescribed by your doctor.