• Gooseberry Falls Black and White in the Rain
    Welcome to Master Supplements Inc.
    We believe in honesty, hard work, and most importantly, helping people.
    We're proud of the efficacy of our products and we're committed to getting them
    into the hands of those who need them.
  • Cyclist Climbing Wall
    Advanced Probiotic
    for Digestive Regularity
    To feel your best,
    take the best
    Theralac Bottle
  • Mom and Child at Ocean
    You care about what's
    inside the products you
    give your family
    We do too.
  • Runner Stretching on the Pier
    Discover the importance
    of Probiotic Rotation
    Theralac Bottle
    TruFlora Bottle

Master Supplements is raising the standard.

Save 30% on Granular Theralac with the coupon code GRANULAR30

Our Products



Complete probiotic coverage helps you stay regular.

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Probiotics to support your colon and immune system.

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Probiotics and enzymes combined for cleansing effects.

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Boost digestion with 12 plant-based enzymes.

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Reduce discomfort and promote probiotic growth.

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Granular Theralac

Granular Theralac®

Fortify your diet with probiotic powder.

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Latest Blog Posts

Are you worried about the viability and effectiveness of probiotics when shipped in high temperatures? 

Don't be.  We've thought of everything!

Our probiotic products are very stable, even at high temperatures.  The bigger concern is moisture and oxygen in the bottle and we take extensive measures to make sure these aren't an issue.  During the manufacturing process we utilize Totally Inert Packaging which includes:

* Amber glass bottles versus cheaper plastic
* Rayon...

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The prospect of evaluating every probiotic available and trying to figure out which one is best for you seems like a challenge. With so many options, how can you make a decision? With the introduction of TruBifido, Master Supplements now has three (okay, technically four) probiotic supplements. We developed TruBifido to colonize your colon with a powerful dose of Bifidobacteria probiotics and complete our triad of supplements. But, what does that mean? Doesn’t Theralac contain...

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One of the greatest revelations of recent times discovered that 90 percent of the cells in human body were not human at all. The vast majority of cells that live on and within the body are actually a teeming universe of diverse microorganisms. We have communities of microbes everywhere. They are living on all our mucous surfaces, on and in the layers of our skin as well as throughout our entire digestive tract.

Upon delving into the world of microorganisms, scientists also discovered that there...

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It's time to let you in on a little secret of mine. I have a condition called slow transit time syndrome i.e. constipation! It's not that I haven't been doing my best to get things moving. A variety of laxatives, herbs, and fibers have definitely helped. But getting a real solution has always eluded me.  That is, until I discovered bio-cleansing.

Apparently, I am not alone with this problem. It appears that 15 percent of us are plagued by constipation! Personally, I think the number is a...

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There are two fiber types, insoluble and soluble, and neither is digested by the enzymes produced in the human body. Insoluble fiber, also known as roughage, is mostly composed of cellulose and serves as a bulking agent in the intestinal tract. Foods such as bran, beans, and brown rice contain insoluble fiber. In contrast, soluble fiber performs vital prebiotic functions in the intestinal tract – functions which stimulate your body's indigenous probiotic microorganisms (as well...

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We're all familiar with antibiotics and their intended goal: to kill the harmful bacteria which cause illness. But, the use of antibiotics create a conundrum because they do not discriminate between harfmul and beneficial bactera; and, because of their unselective nature, antibiotics also kill the beneficial bacteria that live in our digestive tract as well. This has the potential to cause other issues such as, diarrhea, upset stomach, or lowered intestinal immunity.


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