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Master Supplements - Theralac Probiotic Master Supplement - 30 Capsules
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  • Ingredients
  • Casein-Free

    Contains no proteins derived from milk and cheese commonly used in processed foods.

  • Gluten-Free

    Excludes any ingredient that is a gluten-containing grain including wheat, barley, rye and triticale.

  • Soy-Free

    Soy-free products do not contain soybeans or any other forms of soy.

  • Wheat-Free

    Wheat-free products contain no wheat or ingredients derived from wheat.

Master Supplements - Theralac Probiotic Master Supplement - 30 Capsules

5 Human Strains + 2 Prebiotics
MSRP: $47.95$30.69  you save 36% Per Serving: $30.69
Serving Size: 1 Capsule(s)
  • 2 or more 29.16$29.16
  • 3 or more 28.39$28.39
  • 4 or more 26.85$26.85
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Master Supplements - Theralac Probiotic Master Supplement - 30 Capsules

  • Item# :84476
    UPC# :804879057604
  • Brand:Master Supplements
  • Size/Form:30  Capsules
  • Ship Weight:0.25
  • Servings:1
  • Dosage:1  Capsule(s)

Master Supplements Theralac Probiotic Master Supplement - 30 Capsules

Master Supplements Theralac Probiotic Master Supplement fights constipation and diarrhea, and works fast to restore regularity! Theralac is a new, highly effective probiotic that replenishes these beneficial bacteria with a MINIMUM 30 billion CFU of five well researched probiotic strains. Theralac promotes a healthy soft-lining (wall) in the intestinal tract which results in improved digestion, regularity and nutrient absorption.

  • Helps restore regularity
  • Clinically proven probiotic strains protected by 4 US patents
  • Patented acid-proof delivery which guarantees delivery to your intestinal tract
  • Protected during shipping with TIP packaging
  • 30 Billion CFU guaranteed through expiration
  • Five probiotic strains that colonize the entire G.I. tract
  • Safe for infants over 6 months
  • Patented probiotic stimulation with their prebiotic Lactostim and Sodium Alginate


Theralac is the most effective probiotic supplement because its patented acid-proof formulation protects sensitive probiotic bacteria as they pass through the acidic stomach; this allows them to enter the intestinal tract unharmed at full strength. The patented formulation, utilizing sodium alginate and grape skin extract, forms a buffered gel in the stomach. This protects the probiotic microorganisms. This is a significant improvement over enteric coated probiotics. Once in the intestinal tract, Theralac's five probiotics are stimulated into action by its two prebiotics (LactoStim and Lactoferrin -- patent pending) to give you maximum probiotic benefit. It's called 5 + 2 Biotherapy and is only available in Theralac.

Probiotic supplements help restore regularity fast provided they contain at least 10 billion CFU/dose and are composed of multiple strains of Lactobacillus and Bifidobacteria in a formulation that assures LIVE DELIVERY into the intestinal tract. Theralac is a multi-strain probiotic supplement containing a minimum 30 billion CFU in a patented acid-proof formulation that guarantees LIVE DELIVERY through the acidic stomach. It works fast to restore regularity and normal stool consistency.

Constipation and diarrhea are caused by an imbalance in the intestinal microflora where undesirable bacteria dominate. Theralac's patented delivery process assures that billions of Lactobacillus and Bifidobacteria probiotics enter the intestinal tract alive and restore domination by the probiotic flora.

Master Supplements Questions & Answers

What are probiotics?
Probiotics are beneficial bacteria that are able to colonize the intestinal tract and help promote healthy structure and function; Lactobacillus acidophilus is an example of a well known probiotic.

Is Theralac the same as Acidophilus?
Yes, but much more...Theralac capsules contain 10 billion CFU of Lactobacillus acidophilus (LA-1 strain), a well documented, bile tolerant strain with a long history of use in human dietary supplements. This makes Theralac five times stronger in "Acidophilus" than most probiotic products. Additionally, Theralac contains 40 billion CFU of four symbiotic probiotics that go beyond the capability of Acidophilus: These are select strains of lactobacillus and Bifidobacterium species that are backed by scientific studies. ONLY THERALAC CONTAINS THIS BLEND OF RESEARCH PROVEN PROBIOTIC STRAINS.

What is a CFU and why do I need so many?
CFU stands for Colony Forming Unit . It's the number of bacterial colonies that form on a Petri dish and indicates a product's viability or strength. Your intestinal tract contains over 1OO trillion microorganisms from about 1,000 different species, mostly bacteria. Only high potency probiotic products (those containing 10 billion CFU/capsule or more) can reliably re-establish the probiotic population within this huge number), alcohol, prescription drugs, travel, frequent colds or infections, and aging are the big ones. It's hard for a modern person not to have a probiotic deficiency to some degree.

What are the symptoms of a probiotic deficiency?
They vary from person to person but may include one or more of the following: Constipation or diarrhea, indigestion, incomplete digestion, heartburn, excess gas and bloating, lactose intolerance, weak immune response (frequent colds and infections), fatigue, low energy, muscle weakness, and food allergies. Obviously, you cannot be at peak health if you have a probiotic deficiency!

Do I need to take Theralac every day to correct a probiotic deficiency?
No. Theralac's advanced, high potency formulation allows you to take two capsules per week once your intestinal tract's microflora has been balanced (this occurs for most people after taking Theralac daily for two weeks). The ability to take a probiotic twice a week provides convenience and cost savings.

NOTE: Taking Theralac daily for two weeks provides 560 billion CFU to your intestinal tract, a very effective dose by probiotic standards. Once this dose colonizes the intestinal tract it can be maintained by taking two capsules (80 billion CFU) per week.

What is a prebiotic?
A food grade substance that benefits probiotic bacteria by some specific mechanism.

How do Theralac's prebiotics work?
Theralac contains two prebiotics that are effective at low dosages; Lactoferrin and LactoStim (patented). Lactoferrin binds iron and makes it difficult for iron dependent, gram negative bacteria (like Salmonella and E. coli) to grow. This gives gram positive, probiotic bacteria (which require less iron) a competitive advantage. LactoStim is a food grade emulsifier that stimulates the growth and reproduction of Theralac's probiotic bacteria (patented).

Will foods rich in FOS also benefit Theralac's probiotics?
Yes. FOS, or fructooligosaccharides, are prebiotics that you can get by eating certain foods, and are required in larger quantities compared to Lactoferrin and LactoStim. FOS can cause gas in some individuals when taken as an isolated prebiotic. When taken in food, the unidentified nutrient factors help reduce the gas issue. For the best prebiotic, take TruFiber. 

So, how does Theralac work in my intestinal tract?
The probiotic bacteria in Theralac attach to the soft lining (wall) of your intestinal tract and help keep it healthy. The lactobacillus ("lacto") strains are most active in the small intestine while the Bifidobacterium ("Bifido") strains work best in the large intestine (colon). A healthy intestinal wall encourages optimum absorption of nutrients, including vitamins and minerals, and supports healthy digestion and elimination. Theralac also benefits your immune system...

How does Theralac benefit my immune system?
Theralac's five probiotic strains work together (in symbiosis) to stimulate the mucosal immune system on the intestinal surface which then sends activation signals to the body's systemic immune system. Because Theralac's strains are beneficial this action is gentle and modulated. The immune system is put on "yellow alert" so to speak, ready to act quickly when pathogenic microorganisms appear.

How does Theralac's acid-proof formula compare to enteric coated probiotics?
Much better and safer! Most enteric coated probiotics are treated with a polymer of acrylic acid, a synthetic chemical. The sodium alginate used to acid-proof Theralac capsules is a natural carbohydrate found in seaweed (patented). NOTE: Studies show that > 99% of unprotected probiotics are killed when exposed to stomach acid for 1 hour, a typical time spent in the stomach.

Can I take Theralac when taking antibiotics?
Yes. Take the antibiotic at the prescribed time followed by Theralac two-three hours later. Continue taking Theralac daily for at least two weeks after finishing the antibiotics.

How many Theralac capsules should I take when traveling?
Take at least one per day. When traveling to developing countries take two per day, one in the morning and one in the evening. Intestinal problems are easier to prevent than treat so start taking Theralac daily one week before you leave.

Can Theralac reduce lactose intolerance?
Lactose intolerance results from a lack of the enzyme lactase in the small intestine. All five of Theralac's probiotic strains produce lactase and may reduce the severity of lactose intolerance.

Can Theralac improve vitamin and mineral absorption?
Vitamins and minerals are absorbed in the small intestine. The health and integrity of the intestinal soft lining (wall or mucosa) affects the absorption of all nutrients including vitamins and minerals. Theralac may help improve vitamin and mineral absorption by maintaining a healthy soft lining. In addition, mineral absorption, especially calcium and magnesium, is improved by a slightly acid pH at the mucosal surface. The probiotic strains in Theralac produce lactic and acetic acids which lower pH (acidify), if this occurs on the surface of the soft lining it may enhance Ca and Mg absorption.

Can I overdose on Theralac?
What would be the effect? Probiotic bacteria, including those in Theralac, have been used in dosages of one trillion CFU/day or more without harmful effects. At very high dosages probiotics may cause diarrhea in some people which can be eliminated by reducing the dose. Sometimes when high potency probiotics are used for the first time a short period of discomfort results while the intestinal tract's microflora is being rebalanced. This is called the Herxheimer Reaction.

Can you explain the Herxheimer Reaction in more detail?
The Herxheimer Reaction is a period if discomfort that sometimes results when harmful microorganisms are rapidly killed off in the intestinal tract and their toxic byproducts accumulate prior to elimination. When the intestinal tract is severely out of balance (has low numbers of probiotic bacteria) and one takes a high potency probiotic, it may cause a sudden die off of harmful bacteria (or yeast) followed by detoxification symptoms such as bloating, cramping, gas or headaches. Usually these symptoms subside in a short time as the probiotics gain control and the harmful microorganisms are eliminated. If this happens, stay the course with the probiotic or lessen the dose slightly. If severe or persistent symptoms occur see your doctor.

About Master Supplements, Inc.

Master Supplements, Inc. (formerly Therabiotics) is a Minnesota corporation founded in 2002 by Randolph S. Porubcan. The corporation's mission is to research naturally occurring, symbiotic, probiotic micro-organisms and bioactive prebiotics and develop high potency nutraceutical products based on this research. The corporation utilizes prominent scientists in a worldwide network to achieve this objective.

As a dietary supplement for adults, take one capsule daily for two weeks followed by two capsules per week thereafter. Return to one-capsule daily whenever additional supplementation is desired.

Master Supplements - Theralac Probiotic Master Supplement - 30 Capsules
Supplement Facts
Serving Size: 1 Capsule
Servings Per Container: 30
Amount Per Serving %DV
Lactobacillus Paracasei (Strain F-19) 5 Billion CFU *
Lactobacillus Rhamnosus (Strain LR-44) 2 Billion CFU *
Lactobacillus Acidophilus (Strain LA-1) 10 Billion CFU *
Bifidobacterium Lactis (Strain BL-34) 10 Billion CFU *
Bifidobacterium Lactis (Strain BL-07) 3 Billion CFU *
Lactoferin (milk) 20 mg *
*Daily Value Not Established.
†Percent Daily Values are based on a 2,000 calorie diet. Your diet values may be higher or lower depending on your calorie needs.
Ingredients: Cellulose, Sodium Alginate, Grape Skin Extract, Silica, HPMC (Capsule), Lecithin + Oleic Acid, Magnesium Sterate (vegetable source)
1600 Arboretum Blvd., Suite 202
Victoria, MN,
Phone: 800-926-2961 Fax: 570-300-2333 Visit website

About Master Supplements

Master Supplements, Inc. (formerly Therabiotics) is a Minnesota corporation Founded in 2002 by Randolph S. Porubcan. The corporation's Mission is to research naturally occurring, symbiotic, probiotic micro-organisms, and bioactive prebiotics and develop high potency nutraceutical products based on this research. The corporation utilizes prominent scientists in a worldwide network to achieve this objective. The four master supplements, theralac, enzalase, trufiber, and truflora are advanced, patented products that have improved intestinal health for thousands of people.

Average Rating

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100%6 out of 6 reviewers would recommend this product to a friend.
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By (Jefferson , ME )

Works great when the digestive system needs a little help!

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By (Swanville , ME )

Been on this for nearly a year while being treated for Lyme. Have not digestive problems or problems with yeast.

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By (Oakton , VA )

This product is excellent. I had been taking OTC probiotics from my drug store. Within 5 days of taking Theralac I began to feel better. I have Chronic Lyme Disease and it made a difference. I also gave my 2nd bottle of Theralac to a relative who was trying to get rid of c-diff. I believe that it was instrumental in helping him clear up this persistent condition.

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By (Mojave , CA )

My doctor recommended this product to me after a bout with food poisoning. After reading about it online, I tried using it when I had a yeast infection and it worked like magic! Better than Diflucan. I will always have this in the house!

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By (Harleysville , PA )

This product is by far one of the best probiotics on the market, we use it for both my sons and it has reduced reflux symptoms tremendously. My children are now potty trained thanks to this product, before they could not control their bowel. This product changed so much for our family. Thank you Theralac!!!!!!!!!!!!!!!!

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Disclaimer: The views and opinions expressed by contributors of the product reviews are their own and not necessarily those of LuckyVitamin.com. LuckyVitamin.com does not endorse or imply any medical claims from these reviews. These reviews should not be taken as recommendations but rather customer opinions of the products that they may or may not have used. Reviews are not intended as a substitute for appropriate medical care or advice and are not intended to diagnose, treat, cure, or prevent any disease. Read the full product reviews disclaimer here.

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