Dr. Ethan Russo
Type of Practice:
Research and Development

Education Associations

University of Massachusetts Medical School, 1978


Ethan Russo, MD, is a board-certified neurologist, psychopharmacology researcher, and Founder/CEO of CReDO Science https://credo-science.com

Previously he was Director of Research and Development for the International Cannabis and Cannabinoids Institute, 2017-19, Medical Director of PHYTECS, 2015-2017, and from 2003-2014, Senior Medical Advisor, medical monitor/study physician to GW Pharmaceuticals for numerous Phase I-III clinical trials of Sativex® and Epidiolex®.

He was a clinical neurologist in Missoula, Montana for 20 years.

He has held faculty appointments in Pharmaceutical Sciences at the University of Montana, and in Medicine at the University of Washington.

He is author/editor of seven books and has published more than 60 peer-reviewed articles.


(Lewis, Russo, & Smith, 2018; MacCallum & Russo, 2018; Russo, 2018, 2019a, 2019b; Russo, Cuttler, et al., 2021; Russo, Plumb, & Whiteley, 2021; Russo, Spooner, May, Leslie, & Whiteley, 2021; Sarma et al., 2020; Urbi, Broadley, Bedlack, Russo, & Sabet, 2019)


Lewis, M. A., Russo, E. B., & Smith, K. M. (2018). Pharmacological Foundations of Cannabis Chemovars. Planta Med, 84(4), 225-233. doi:10.1055/s-0043-122240

MacCallum, C. A., & Russo, E. B. (2018). Practical considerations in medical cannabis administration and dosing. Eur J Intern Med, 49, 12-19. doi:10.1016/j.ejim.2018.01.004

Russo, E. B. (2018). Cannabis Therapeutics and the Future of Neurology. Frontiers in Integrative Neuroscience, 12, 1-11. doi:10.3389/fnint.2018.00051

Russo, E. B. (2019a). Cannabis and Pain. Pain Med. doi:10.1093/pm/pnz227

Russo, E. B. (2019b). The case for the entourage effect and conventional breeding of clinical cannabis: No “strain,” no gain. Frontiers in Plant Science, 9(1969), 1-9. doi:10.3389/fpls.2018.01969

Russo, E. B., Cuttler, C., Cooper, Z. D., Stueber, A., Whiteley, V. L., & Sexton, M. (2021). Survey of Patients Employing Cannabigerol-Predominant Cannabis Preparations: Perceived Medical Effects, Adverse Events, and Withdrawal Symptoms. Cannabis Cannabinoid Res. doi:10.1089/can.2021.0058

Russo, E. B., Plumb, J., & Whiteley, V. L. (2021). Novel Solventless Extraction Technique to Preserve Cannabinoid and Terpenoid Profiles of Fresh Cannabis Inflorescence. Molecules, 26(18). doi:10.3390/molecules26185496

Russo, E. B., Spooner, C., May, L., Leslie, R., & Whiteley, V. L. (2021). Cannabinoid Hyperemesis Syndrome Survey and Genomic Investigation. Cannabis Cannabinoid Res. doi:10.1089/can.2021.0046

Sarma, N. D., Waye, A., ElSohly, M. A., Brown, P. N., Elzinga, S., Johnson, H. E., . . . Giancaspro, G. I. (2020). Cannabis Inflorescence for Medical Purposes: USP Considerations for Quality Attributes. J Nat Prod, 83(4), 1334-1351. doi:10.1021/acs.jnatprod.9b01200

Urbi, B., Broadley, S., Bedlack, R., Russo, E., & Sabet, A. (2019). Study protocol for a randomised, double-blind, placebo-controlled study evaluating the Efficacy of cannabis-based Medicine Extract in slowing the disease pRogression of Amyotrophic Lateral sclerosis or motor neurone Disease: the EMERALD trial. BMJ Open, 9(11), e029449. doi:10.1136/bmjopen-2019-029449