Master Supplements, Inc.Reviews of master-supplements.com

Reply from Master Supplements, Inc.Mar 3, 2026

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.

Reply from Master Supplements, Inc.Mar 3, 2026

I am so sorry for the delayed response on this review platform but perhaps you were able to get into contact with our Customer Service team? Since 2003 we have had our 30 capsules versions and they are excellent products, the Doctor and Patient versions, do have 50 capsules and are more expensive for a bottle but you do save on the per capsules price. For all of our products we have a full money back guarantee and since it has been so long I feel obliged to send you a free bottle. Again, sorry for the confusion while ordering and not getting back to you sooner!

Reply from Master Supplements, Inc.Sep 24, 2024

Hi Meredith, we are very sorry to hear this! I am sure you have already but please discontinue use. You may have a sensitivity to an ingredient, or once in a while there can be a 'cleansing' period, sometimes referred to a herxhiemer reaction, where digestive symptoms can get worse before they get better. Also with our patented deep delivery and high potency, sometimes, the products can be too strong for some people. We take all adverse reactions very seriously and as part of our proactive FDA registration, we document each adverse reaction, as rare as they may be. We offer a full money back guarantee, so even though your health is the priority, just know that you won't be charged for anything that you are not completely satisfied with. You can reach us at 800-926-2961 or via e-mail at [email protected] for assistance.

Reply from Master Supplements, Inc.Jun 16, 2023

Hi Linda, this particular order was placed on a Sunday evening and did ship the following day however something out of the ordinary happened with this package once it was in the care of the USPS. I know customer service expedited an overnight reshipment via UPS at no additional charge so hopefully that service is enough to warrant an upgrade to the 1 star review but if not we can accept that, USPS is usually reliable after 20 years but something certainly went wrong with this order and we apologize for everything not going seamlessly.

Reply from Master Supplements, Inc.Sep 20, 2019

Hello Miles, I am sorry for this delay, we have refunded the $8.50 in shipping charges and according to the tracking, this package is out for delivery today. This package was shipped on the 11th with dozens of other packages that were all delivered between the 12th and the 14th. I don't have an answer to what happened to this particular package between MN and TN but after 15 years, we have occasionally seen random delays from the PO. We'll keep an eye on the tracking to make sure it gets to you today. I also wanted to take this opportunity to let you know that Master Supplements has recently acquired US Enzymes and as of this September, we have begun fulfilling orders from our warehouse in Victoria MN. US Enzymes products will now be shipping M-F. We tried very hard to fulfill every order accurately and efficiently and I apologize that our partnership with the USPS wasn't satisfactory. Master Supplements has 9 U.S. patents on our probiotic formulas and have guaranteed noticeable results since 2002. We are excited to be partnering with the US Enzymes team and expanding into therapeutic enzymes and fiber supplements- I hope to gain your trust both in our logistics capability and also product performance! If you have any questions, please feel free to give Sophie at call at 800-926-2961 or shoot us an e-mail: [email protected] Sorry for the inconvenience- Jeff Porubcan, President Master Supplements/US Enzymes

Reply from Master Supplements, Inc.Jun 22, 2016

Hi Don- thank you for taking the time to complete the review. We received verification that your package was delivered on June 17th. If there were any issues with your order or if you have questions about this, please contact me at (800) 926-2961 M-F 9-6 EST. In the meantime, if you are happy with your order, we would appreciate you updating your review. Your Friends at Master Supplements, Inc.

Reply from Master Supplements, Inc.Feb 5, 2016

Hi Lynn, I apologize for the incorrect order being sent. I looked into the issue and noticed that the order was placed back in the fall of 2014. Master Supplements Inc. is dedicated to customer satisfaction and we make a point to be accountable for our mistakes. I am not sure if you reached out to us at the time but we would still like to help resolve the issue and get you the products that you ordered and paid for. Is it okay if we contact you to help resolve this?

Reply from Master Supplements, Inc.Sep 1, 2015

Hi Robert, I am sorry to hear about your displeasure with our products. I do hope that you take the product and give it a chance to work for you regardless of the doubts you are having. We are very proud of the efficacy of our products and the positive results that have been reported for over twelve years. We can provide testing procedures and test results that speak to the products excellent stability, even at accelerated temperatures. We guarantee the potency through the entire shelf regardless of whether or not the product was slightly chilled with a small ice pack for the short amount of time it takes an ice pack to thaw. In actuality, the moisture brought into the packaging can be more detrimental than temperature to the freeze dried bacteria. That being said, if you are unsatisfied, we offer a 30 day money back guarantee. Thank you for your consideration-Jeff Porubcan, President Master Supplements Inc