So much integrity with Master Supplements. I’ve been doing business with them for 15 years- science backed and tested. Same people working there with friendly, helpful, intelligent advice. Superior... See more
Company replied
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Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
I truly love Master Supplements. Their products are of outstanding quality — you can feel the difference. What makes this company even more special is their commitment to education and integrity.... See more
Company replied
This is a one-of-a-kind company. True integrity, the highest intent, and the best products in their class. Microbiome health is increasingly recognized as key to optimal physical and mental wellness.... See more
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I discovered the educational videos. They are valuable to gain an understanding of the products. The Lumbrokinase that you have tested well. It use to be you could get higher strengths. But lately it... See more
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Company details
Information provided by various external sources
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.
Written by the company
- Save 15% today!
- Use coupon code MSI16 to save 15% on your next order with Master Supplements!
Fast shipping!
All shipments from our warehouse arrive within 5 business days
We know that time spent in transit is important to you. That's why we utilize multiple carriers to ensure that all packages that leave our warehouse will arrive at your home as soon as possible!
Contact info
1600 Arboretum Blvd., Suite 202, 55386, Victoria, MN
- (800) 926-2961
- info@mastersupplementsinc.com
- master-supplements.com
4.9
Excellent
1k reviews
Asks customers to review
This company invites their customers to review, whether positive or negative
Replied to 100% of negative reviews
Typically takes over 1 month to reply
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11 April 2026
Great company of the long history of…
Great company of the long history of exceptional products
Fast shipping and excellent account representatives that always returned phone calls fast
19 March 2026
I have been a customer for many years
I have been a customer for many years. Great products and service.
11 March 2026
Consistent high quality products and…
Consistent high quality products and service. Excellent online educational programs
3 March 2026
Reply from Master Supplements, Inc.
We love hearing this! Thank you for being part of our growing community.
Silicon dioxide
Silicon dioxide, ascorbic acid etc cheap and unhealthy minorly harmful ingredients:)
10 February 2026
Unprompted review
Reply from Master Supplements, Inc.
Hi Oliver, thank you for taking the time to leave this review. Ascorbic acid is the chemical name for Vitamin C and Silicon dioxide is also known as 'silica' and is a micronutrient commonly found in nature. We believe in full transparency and everything that is in our formulas is in there for a reason. The ascorbic acid (Vitamin C) for example, is a powerful anti-oxidant that scavenges excess oxygen, and Bifidobacteria are strict anaerobes so exposure to oxygen before they reach the anerobic environment of the colon can be extremely detrimental to them before they ever get to the part of the human body where they colonize and proliferate. The Sodium alginate that is in the formula is derived from brown kelp and we have a patented process that uses it to protect the probiotics through the harsh stomach acid.
I appreciate your attention to the details and concern for clean labels, a concern we share. We have been producing Theralac since 2003 and are proactively registered with the FDA while over 95% of supplement companies are not registered at all. In that time, we have never had a reported adverse reaction, however, some people are taken aback by how fast it can restore digestive regularity and comfort.
All of our products are produced in clean cGMP certified facilities and we provide third-party Certificate's of Analysis on every batch of produce.
My late father Randy Porubcan was a micro-biologist and bio-chemist who was instrumental in developing patented probiotic technology in the 1970's and he is the original formulator of Theralac. Some of the chemical sounding ingredients in Theralac can be alarming at first but I assure you they are safe ingredients, used in small amounts for specific purposes. There are no fillers, artificial colors or additives in any of our products. Theralac is 100% vegan, Non-GMO, and free of all major food allergens, our Doctor version is submitted for rigorous Informed Sport testing, which tests for over 200 banned and harmful substances.
One star reviews are very detrimental for us, please consider updating your review and if you like, I would be happy to jump on a phone call to go into more detail.
Thank you for your review and for your consideration in updating that review.
Jeff Porubcan
President, Master Supplements Inc.
I always get such great and efficient…
I always get such great and efficient service with this great product!
26 February 2026
Reply from Master Supplements, Inc.
That is great to hear! Thank you!
Phone Orders
Every time I call they are friendly. courteous and very willing to help.
23 February 2026
Reply from Master Supplements, Inc.
We appreciate your feedback and your 5-star rating!
I love master supplements!
I love master supplements!
Their products are clean and i've used them for several years with great results.
The order process and customer service is also excellent.
20 February 2026
Reply from Master Supplements, Inc.
Your progress is what it’s all about — congratulations!
Master Supplements never disappoints
Master Supplements never disappoints! I can rely on prompt order fulfillment and excellent customer service every single time. I really appreciate the personal experience that my notes are read and responded to in a timely manner. Most certainly, Master Supplements is one of my favorite wellness suppliers to work with!
16 February 2026
Reply from Master Supplements, Inc.
We’re grateful for your review and your trust in our products!
Always fast and accurate
16 February 2026
Reply from Master Supplements, Inc.
When it comes to digestive support, timing matters. We’re glad we could help you stay on track!
Love the products and love the great…
Love the products and love the great service we get.
19 January 2026
Reply from Master Supplements, Inc.
It’s relationships like this that make our work so meaningful!
excellent company
Always excellent, efficient service for great products. I use many of them personally and a number of my patients have happily become regular users, especially the digestive products.
I can’t say Thank you enough for all Master Supplements does to maintain great products.
19 January 2026
Reply from Master Supplements, Inc.
So glad our products are making a difference — your digestive wellness matters to us!
Reply from Master Supplements, Inc.
We’re so thankful to have customers like you.
Wonderful company very informative…
Wonderful company very informative which is new to me. But I am excited to experience what I learned so I can honestly share with others to assist their travels to better health❤️🙏
23 January 2026
Reply from Master Supplements, Inc.
We’re honored to be part of your wellness journey and grateful for the trust you’ve placed in our team.
Reply from Master Supplements, Inc.
So glad it arrived quickly — thank you for the 5 stars!
Easy to order / Quick response always…
Very easy to order and love the products and people that work for the company. They always respond very quickly.
2 January 2026
Reply from Master Supplements, Inc.
We’re committed to a seamless experience from order to delivery — glad it showed!
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