Dr. Leonard Weinstock


“Thanks for once again finding a great doctor to disseminate information to those of us who haven’t found good doctors to work with – it’s really appreciated!” – Amanda

Mast Cell Activation Syndrome is a common but underdiagnosed condition closely related to SIBO and other gut issues.

Common symptoms include:

  • fatigue
  • muscle discomfort
  • GERD & acid reflux
  • weight loss or gain
  • hives & itchy skin
  • migraines
  • brain fog 

In this Masterclass with Dr. Leonard Weinstock, gain a deeper understanding of Mast Cell Activation Syndrome, its relation to histamine intolerance, SIBO, fatigue, inflammation and more… plus the latest advances in diagnosing and managing MCAS are in the Masterclass.

1-Hour Exclusive Medical Conference Level Class

Learn from the expert in your own home, at your own pace.

2 Hours Question & Answers

Watch, Listen, Read questions asked and answered!

Unlimited Access to Recordings & Transcripts

Downloadable audio and professional transcripts of the class and Q&A.

Here are some slides from the masterclass…

What people are saying about this Masterclass…

Chronic SIBO Masterclass with Dr. Leonard Weinstock Is Your Histamine Intolerance and Inflammation Really Mast Cell Activation Syndrome_

Your Teacher: Dr. Leonard Weinstock

Dr. Leonard B. Weinstock is Board Certified in Gastroenterology and Internal Medicine. He is president of Specialists in Gastroenterology and the Advanced Endoscopy Center. He teaches at Barnes-Jewish Hospital and is an Associate Professor of Clinical Medicine and Surgery at Washington University School of Medicine. He is a primary investigator at the Sundance Research Center. 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.


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We are going to share the EXACT protocols that worked on us and many others. It is not meant to diagnose or treat disease, nor does it replace the 1-on-1 relationship with your primary care physician. Always consult a medical professional before taking supplements and work along with them as you work on your SIBO.