Great products, even better customer service!
Their products are absolutely amazing and high quality. The probiotics are top quality and really work well. However, all of that pales in comparison to their expert customer service.
By Kevin Hay D.
Tuesday, November 3, 2026 · Customer reviews of US businesses

The Fair Hearing score
Excellent
783 reviews
Select a line to read only those reviews.
Honesty, pricing, process and quality scores appear once 5 customers have rated them.
Here at Master Supplements, we believe in honesty, hard work, and, most importantly, helping people. We're proud of our product efficacy and we're committed to getting them into the hands of those who need help.
Master Supplements, Inc. (master-supplements.com) has 783 customer reviews on The Fair Hearing, with an average rating of 4.9 out of 5.
783 approved reviews, newest moderated first
Their products are absolutely amazing and high quality. The probiotics are top quality and really work well. However, all of that pales in comparison to their expert customer service.
By Kevin Hay D.
Great service. Very informational. Rapid shipping. Great products.
By Crystal S.
Excellent product that works as advertised. Recently had questions for customer service and they answered all questions in detail. Why buy anything else?
By Charles A :.
So glad to have master supplements to help me thru this yeast detox. I have tried many other alternatives to no avail. The supplements are working and I'm doing much better. Not to mention the great help I had thru this detox from the wonderful people in the service dept. Thank you
By Shelia Widmayer :.
I have been very happy with my good results and benefits with the entire line... Theralac, TruFlora, TruFiber and Enzalase. Why? Because my overall health and digestive issues have vastly improved, using these along with a sensible healthful diet of organically-grown and humanely-raised foods. As Hippocrates stated: All disease begins in the gut. Try MSI!
By Customer :.
Master Supplements are high-quality probiotics & enzymes that bring remarkable health results in people suffering with GI discomfort, food allergies, lyme disease, & auto-immune conditions. People with fewer health concerns will feel a vitality boost from these supplements.
By Celia M. :.
I appreciate them telling me of an additional discount with additional purchases. Fast delivery.
By susan
We've used TruFiber, Theralac, TruFlora and Enzalase. I highly recommend this company due to their high quality supplements and excellent customer service. Their rep also is fabulous at following up and answering any questions I have.
By Kate W.