PlainVitamins

Mg-K Aspartate

by Douglas Laboratories · tablet or pill · 100 tablets

  • On the market (NIH)
  • UPC 7 45287 04022 5
  • DSLD label 237957
  • Serving 1 tablet
  • 100 servings

Mg-K Aspartate by Douglas Laboratories lists 3 ingredients, 3 with an amount per serving of 1 tablet, such as 100 mg of magnesium, 99 mg of potassium and 682 mg of L-aspartic acid. Its current label entered the NIH Dietary Supplement Label Database on October 23, 2020.

What is in Mg-K Aspartate?

Each row as the label prints it, per serving of 1 tablet. 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).

Mg-K Aspartate: Supplement Facts rows against the market (DSLD label 237957, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas Magnesium AspartateMagnesium (Form: as Magnesium Aspartate)100 mg24%Magnesium in Mg-K Aspartate against 14,003 products100 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg100 mg

Higher than 51% of 14,003 products listing magnesium (median 86 mg).

Potassiumas Potassium AspartatePotassium (Form: as Potassium Aspartate)99 mg2%Potassium in Mg-K Aspartate against 11,614 products99 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg99 mg

49% of 11,614 products listing potassium give more (median 99 mg).

L-Aspartic AcidL-Aspartic Acid Note: total yield682 mgAspartic Acid in Mg-K Aspartate against 377 products682 mg per serving; the middle half of products list 106 mg to 1,846 mg, the median 337 mg.682 mg

Higher than 60% of 377 products listing aspartic acid (median 337 mg).

Source: NIH ODS Dietary Supplement Label Database, label 237957 (entered October 23, 2020), version 9.4.0. See the label on DSLD. 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?

3 products list the very same ingredients; the nearest amounts come first.

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 Usage: As a dietary supplement, adults take 1 tablet daily or as directed by your health professional.
Warnings
Warning: If you are pregnant, nursing, have any health condition or taking any medication, consult your health professional before using this product.
Keep out of the reach of children.
Use only if safety seal is intact.
Allergens and what it does not contain
Gluten-free, non-GMO
Storage
Store in a cool, dry place.

Source: label statements in DSLD label 237957.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Hydroxypropyl Cellulose, Croscarmellose Sodium, Stearic Acid, Coating, Silica, Vegetable Stearate.

How many labels does Mg-K Aspartate have?

4 labels are on file under this name since February 23, 2012: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 237957 (current) Entered October 23, 2020 · on the market · 100 tablets · UPC 7 45287 04022 5
  2. Label 56103 Entered January 25, 2016 · off the market August 14, 2020 · 100 tablets · UPC 7 45287 04022 5
  3. Label 10934 Entered July 25, 2012 · off the market December 15, 2015 · 100 tablets · UPC 7 45287 04022 5
  4. Label 5306 Entered February 23, 2012 · off the market January 20, 2012 · 100 tablets · UPC 7 45287 04022 5

Source: DSLD label entry and market events, version 9.4.0 (labels entered through September 25, 2025).

Who makes it?

The label names Douglas Laboratories (manufacturer), Pittsburgh, PA. All Douglas Laboratories products.

Where next?