Pharmacokinetic Interaction of Kratom and Cannabidiol in Male Rats oleh Erin C. Berthold, Shyam H. Kamble, Siva Rama Raju Kanumuri, Michelle A. Kuntz, Alexandria S. Senetra, Yi-Hua Chiang, Sushobhan Mukhopadhyay, Christopher R. McCurdy, Abhisheak Sharma