Bryon B.
Simple ordering process and efficient…
Simple ordering process and efficient shipping practices makes ordering my patients’ items simple.

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 Five Star Index, with an average rating of 4.9 out of 5.
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Bryon B.
Simple ordering process and efficient shipping practices makes ordering my patients’ items simple.
Kathleen
Excellent Theralac probiotic and excellent customer service. They are so easy to talk with, and very knowledgeable about their products.
Tony V.
Great company, tremendous enzyme supplements
Susan O.
Excellent customer service. The product is really well-packaged. Although it is hard to assess the efficacy of a supplement, I believe Theralac to be one of the best probiotics on the market.
Susanne C.
This is the most effective probiotic I’ve ever found. I once tried Dr. Ohhira’s probiotic, on the recommendation of the owner of a very reputable nutrition store in Ft. Lauderdale, FL. He touted that Dr. Ohhira had won a Noble Prize for his research. I found that product to be ineffective. I went back, told the owner. His response was that I need to stay on it for many months. I have taken Theralac, on and off, over many years. I’ve never needed more than a few days to notice results. Dr. Ohhira’s probiotics cost twice as much, with no results in a month. I’ve never tried anything else since then. I’m convinced this is the best product available, and it’s well worth the money.
Gene
This is a well known supplement for its reliability and benefits.
Teresa
Awesome service from Bill! Placed my first order as a referral from my doctor and was great experience. Looking forward to future purchases and service.
Isabela F.
customer service is exceptional and the quality of the products are great. I love the dark glass bottle and how there are no fillers and the how one capsule contains a lot of product. I am a big fan.