Interactive Effects of µ-Opioid and Adrenergic-α2 Receptor Agonists in Rats: Pharmacological Investigation of the Primary Kratom Alkaloid Mitragynine and Its Metabolite 7-Hydroxymitragynine

Samuel Obeng, Francisco León, Avi Patel, Julio D. Zuarth Gonzalez, Lucas Chaves Da Silva, Luis F. Restrepo, Lea R. Gamez-Jimenez, Nicholas P. Ho, Maria P. Guerrero Calvache, Victoria L.C. Pallares, Justin A. Helmes, Sakura K. Shiomitsu, Paul L. Soto, Aidan J. Hampson, Christopher R. McCurdy, Lance Richard McMahon, Jenny L. Wilkerson, Takato Hiranita