PlainVitamins

Magnesium/Potassium Aspartate

by Douglas Laboratories · capsule · 250 vegetarian capsules

  • On the market (NIH)
  • UPC 3 10539 98037 8
  • DSLD label 288651
  • Serving 1 capsule
  • 250 servings

Magnesium/Potassium Aspartate by Douglas Laboratories lists 2 ingredients, 2 with an amount per serving of 1 capsule, such as 70 mg of magnesium and 99 mg of potassium. Its current label entered the NIH Dietary Supplement Label Database on July 18, 2023.

What is in Magnesium/Potassium Aspartate?

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).

Magnesium/Potassium Aspartate: Supplement Facts rows against the market (DSLD label 288651, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesiumas Magnesium Aspartate70 mg17%Magnesium in Magnesium/Potassium Aspartate against 14,003 products70 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg70 mg

54% of 14,003 products listing magnesium give more (median 86 mg). Per day at the most servings: 280 mg.

Potassiumas Potassium Aspartate99 mg2%Potassium in Magnesium/Potassium 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). Per day at the most servings: 396 mg.

Source: NIH ODS Dietary Supplement Label Database, label 288651 (entered July 18, 2023), 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 1 to 4 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?

6 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 dietary supplement, adults take 1 capsule, 1-4 times daily or as directed by your health professional.
Warnings
Warning: Not to be taken if you have hyperkalemia or abnormal kidney function, or take ACE inhibitors or potassium sparing diuretics. If you are pregnant or lactating, have any health condition or are taking any medication, consult your health professional before use.
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 288651.

What else is on the label?

Other ingredients: Hydroxypropyl Methylcellulose, Ascorbyl Palmitate.

How many labels does Magnesium/Potassium Aspartate have?

5 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 288651 (current) Entered July 18, 2023 · on the market · 250 vegetarian capsules · UPC 3 10539 98037 8
  2. Label 286496 Entered February 21, 2023 · on the market · 100 vegetarian capsules · UPC 3 10539 98036 1
  3. Label 8634 Entered June 1, 2012 · off the market August 27, 2013 · 250 capsules · UPC 3 10539 00402 9
  4. Label 8632 Entered June 1, 2012 · off the market August 27, 2013 · 100 capsules · UPC 3 10539 71400 3
  5. Label 5301 Entered February 23, 2012 · off the market January 20, 2012 · 100 capsules · UPC 3 10539 71400 3

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?