Low Dose Naltrexone: Novel Approach to GI Disorders

Presenter: Leonard Weinstock, MD. FACG
Original Date: Janurary 10, 2026 

This lecture will review the role of endorphins in humans. The history of naltrexone and pharmacokinetics will be explained. Reports of the outcome of naltrexone in GI diseases will be reviewed. Dosing and side effects will be reviewed.

Bio: Dr. Leonard Weinstock was born and raised in New York and moved to St. Louis in 1985. Dr. Weinstock received a BA Magna Cum Laude from University of Vermont and the medical degree from University of Rochester School of Medicine. He completed his postgraduate training and was chief resident in Internal Medicine at Rochester General Hospital. His Gastroenterology Fellowship was performed at Washington University School of Medicine in St. Louis.

Dr. Weinstock is Board Certified in Gastroenterology and Internal Medicine. He is president of Specialists in Gastroenterology and the Advanced Endoscopy Center. He is an investigator at the Sundance Research Center and the Clinical Research Practice and has participated in many independent and pharmaceutical research studies.

He is actively researching mast cell activation, small intestinal bacterial overgrowth (SIBO), restless legs syndrome, and Ehlers-Danlos syndrome. He presented several lectures in Oregon at the first SIBO symposium and in France at the International Rosacea Study Group. He is actively researching the role of LDN in several medical syndromes. Dr. Weinstock is an active lecturer and has published more than 130 articles, abstracts, editorials, and book chapters.

NUNM is accredited by the North American Naturopathic Continuing Education Council (NANCEAC). This activity qualifies for 1.5 Pharmacology CEUs Total.