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Reviews (3)

10 July 2018
Great Read!
I had heard David Ring on TV but I thoroughly enjoyed this book. It was written in a good style with authenticity.

28 May 2019
Doctor's orders
My doctor recommended this for me.

05 May 2020
Meets my GI doctor's recommendation
My GI doctor specified that I purchase this product and I've been on it for over a year. It certainly meets his recommendation.