Mag-K
by Progressive Professional from Progressive Laboratories · capsule · 90 vegetable capsules
- On the market (NIH)
- UPC 3 51821 00781 6
- DSLD label 261942
- Serving 3 vegetable capsules
- 30 servings
Mag-K by Progressive Professional from Progressive Laboratories lists 2 ingredients, 2 with an amount per serving of 3 vegetable capsules, such as 200 mg of magnesium and 99 mg of potassium. Its current label entered the NIH Dietary Supplement Label Database on April 11, 2022.
What is in Mag-K?
Each row as the label prints it, per serving of 3 vegetable capsules. 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 |
|---|---|---|---|
| Magnesiumas Magnesium Aspartate, Magnesium Malate | 200 mg | 50% | Higher than 75% of 14,003 products listing magnesium (median 86 mg). |
| Potassiumas Potassium Aspartate | 99 mg | 3% | 49% of 11,614 products listing potassium give more (median 99 mg). |
Source: NIH ODS Dietary Supplement Label Database, label 261942 (entered April 11, 2022), 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.
The NIH database records one serving 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?
6 products list the very same ingredients; the nearest amounts come first.
- Magnesium & Potassium Aspartate FormulaMartin Avenue Pharmacy same ingredients
- Magnesium Aspartate 2XDouglas Laboratories same ingredients
- Magnesium Aspartate 2X with PotassiumDouglas Laboratories same ingredients
- Potassium + MagnesiumNutricost same ingredients
- Potassium 99 mg + Magnesium 210 mgNutricost same ingredients
- Magnesium & Potassium Aspartatetnvitamins same ingredients
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
- Directions: Three vegetable capsules daily with meals, or more, as directed by a health care professional.
- Warnings
- Not to be used by pregnant or lactating women.
- Tamper evident band around cap and seal on bottle. Do not use if either seal is broken or missing.
- Keep out of reach of children.
- Allergens and what it does not contain
- This product is free of sugar, yeast, corn, wheat, soy, artificial color, flavors or preservatives.
Source: label statements in DSLD label 261942.
What else is on the label?
Other ingredients: L-Leucine, Hydroxypropyl Methylcellulose, Rice Flour.
Seals and symbols as the label prints them (the maker's; a certifier's own list confirms a seal): GMP Good Manufacturing Practice Certified GMP Compliant 21 CFR 111.
How many labels does Mag-K have?
One label is on file, entered on April 11, 2022.
- Label 261942 (current) Entered April 11, 2022 · on the market · 90 vegetable capsules · UPC 3 51821 00781 6
Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).
Who makes it?
The label names Progressive Laboratories, Inc. (manufacturer), Irving, Texas. All Progressive Professional from Progressive Laboratories products.