Theralac
by Master Supplements · capsule · 30 capsules
- On the market (NIH)
- UPC 8 04879 05760 4
- DSLD label 336270
- Serving 1 capsule
- 30 servings
Theralac by Master Supplements lists 5 ingredients; 5 give their count of live cultures or enzyme activity instead of a weight. Its current label entered the NIH Dietary Supplement Label Database on August 22, 2025.
What is in Theralac?
Each row as the label prints it, per serving of 1 capsule. The capsule beside an amount places it among every product in the NIH database that lists the same ingredient: the bar is the middle half of their amounts, the line in it the median, the whiskers the 10th and 90th percentiles; the green tick is the FDA Daily Value and the red dashed tick the adult upper limit (IOM).
| Ingredient | Amount | % DV | Among products listing it |
|---|---|---|---|
| Proprietary Probiotic | 133.31 mg | ||
| Lactobacillus acidophilusas Lactobacillus acidophilus LA-1, Lactobacillus acidophilus UALa-01 | 10 billion CFU | ||
| Bifidobacterium animalis lactisas Bifidobacterium animalis lactis BL-04, Bifidobacterium animalis lactis UABla-12 | 10 billion CFU | ||
| Lactobacillus rhamnosusas Lactobacillus rhamnosus Lr-32, Lactobacillus rhamnosus UALr-06 | 2 billion CFU | ||
| Lactobacillus paracaseias Lactobacillus paracasei LPC-37, Lactobacillus paracasei UALpc-04 | 5 billion CFU | ||
| Bifidobacterium animalis lactis Bi-07 | 3 billion CFU |
Source: NIH ODS Dietary Supplement Label Database, label 336270 (entered August 22, 2025), version 9.4.0. See the label on DSLD or its label image (PDF). Amounts are what the maker printed; DSLD does not test products. Daily Values: the FDA's Daily Value page.
Is that a lot?
Every amount on this label with a position sits within the middle 80% of the products that list the same ingredient; 5 ingredients sit inside a blend, so their amounts cannot be compared.
The NIH database records 1 to 2 servings a day from the label's directions; its % Daily Values are for adults and children 4 or more years of age. The directions as printed are further down this page.
The Tolerable Upper Intake Level is the most of a nutrient per day, from food, water and supplements together, that is likely to pose no risk for almost all adults (Institute of Medicine, 2011). It does not apply under medical supervision. This page compares labels; it is not medical advice.
Sources: amounts from the DSLD label; Daily Values from 21 CFR 101.9(c)(8)(iv); adult upper limits from the Institute of Medicine's DRI summary tables (2011). How positions are computed.
Which products have the closest formulas?
4 products list the very same ingredients; the nearest amounts come first.
- Granular TheralacMaster Supplements Incorporated same ingredients
- TheralacPROMaster Supplements Incorporated same ingredients
- Granular TheralacMaster Supplements same ingredients
- TheralacPROMaster Supplements same ingredients
- Standardized Sambucus Sambucus nigra + ProbioticNature's Answer 4 shared, 80% alike
- UltraFlora BiomePro 105 Billion CFUMetagenics 4 shared, 80% alike
Source: ingredient lists of every product's current label in DSLD (version 9.4.0); similarity weights each shared ingredient by how rare it is.
What does the label say about taking it?
Quoted from the label as DSLD transcribed it: the maker's words, including any claim about what the product does, which the FDA has not evaluated and PlainVitamins does not endorse.
- Directions
- Suggested use: Take 1 capsule daily. Take 2 capsules a day for additional digestive support.
- Warnings
- Theralac can be taken with antibiotics; allow at least 3 hours separation.
- Warning: If you are pregnant, nursing, on medication or have any medical condition consult a health care professional before using this product.
- Discontinue use and consult a doctor if any adverse reaction occurs.
- Keep out of reach of children.
- Allergens and what it does not contain
- Gluten free GMO free
- Contains No: Milk, Eggs, Gluten, Wheat, Soy, Casein, Nuts, Seafood, or Beef Products.
- Storage
- Guaranteed at the time of expiration when kept refrigerated.
Source: label statements in DSLD label 336270.
What else is on the label?
Other ingredients: Microcrystalline Cellulose, Sodium Alginate, Hydroxypropyl Methylcellulose, Trisodium Phosphate, Magnesium Stearate, Silicon Dioxide, Calcium Silicate, Ascorbic Acid, LactoStim.
How many labels does Theralac have?
3 labels are on file under this name since October 25, 2013: other sizes, label designs and reformulations. The current one leads this page.
- Label 336270 (current) Entered August 22, 2025 · on the market · 30 capsules · UPC 8 04879 05760 4
- Label 257204 Entered December 18, 2021 · on the market · 30 capsules · UPC 8 04879 05760 4
- Label 26077 Entered October 25, 2013 · off the market February 4, 2016 · 30 capsules · UPC 8 04879 05760 4
DSLD also links this label to: Theralac (image difference, same product), Theralac (image difference, same product), Theralac (image difference, same product).
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Master Supplements, Inc. (distributor), Victoria, MN. All Master Supplements products.