PlainVitamins

Magnesium Potassium Aspartate

by Foster Regal · capsule · 120 capsules

  • On the market (NIH)
  • UPC 3 64175 13890 7
  • DSLD label 260297
  • Serving 2 capsules
  • 60 servings

Magnesium Potassium Aspartate by Foster Regal lists 4 ingredients, 4 with an amount per serving of 2 capsules, such as 200 mg of magnesium and 198 mg of potassium. Its current label entered the NIH Dietary Supplement Label Database on February 23, 2022.

What is in Magnesium Potassium Aspartate?

Each row as the label prints it, per serving of 2 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).

Magnesium Potassium Aspartate: Supplement Facts rows against the market (DSLD label 260297, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesium200 mg50%Magnesium in Magnesium Potassium Aspartate against 14,003 products200 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg200 mg

Higher than 75% of 14,003 products listing magnesium (median 86 mg). Per day at the most servings: 400 mg. 1.1 times the adult UL a day.

Magnesium Aspartate1,000 mg
Potassium198 mg6%Potassium in Magnesium Potassium Aspartate against 11,614 products198 mg per serving; the middle half of products list 50 mg to 190 mg, the median 99 mg.DV 4,700 mg198 mg

Higher than 76% of 11,614 products listing potassium (median 99 mg). Per day at the most servings: 396 mg.

Potassium Aspartate990 mg

Source: NIH ODS Dietary Supplement Label Database, label 260297 (entered February 23, 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?

The rows in the top or bottom tenth of the products that list the same ingredient, and any above the adult upper limit at the most servings a day the directions give:

  • At 2 servings a day, the most its directions give, the label lists 400 mg of magnesium, 1.1 times the adult Tolerable Upper Intake Level.

The NIH database records 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?

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
Directions: As a dietary supplement, take 2 capsules twice a day, morning and evening, preferably with a meal.
Warnings
Tamper evident: Do not use this product if imprinted foil seal under cap is broken or missing.
Keep out of reach of children.
Allergens and what it does not contain
Gluten free
Storage
Keep tightly closed. Store at room temperature: 59 degrees - 86 degrees F (15 degrees to 30 degrees C).

Source: label statements in DSLD label 260297.

What else is on the label?

Other ingredients: Gelatin, Magnesium Stearate, Stearic Acid.

How many labels does Magnesium Potassium Aspartate have?

One label is on file, entered on February 23, 2022.

  1. Label 260297 (current) Entered February 23, 2022 · on the market · 120 capsules · UPC 3 64175 13890 7

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

Who makes it?

The label names Foster Regal Laboratories (distributor), White House, TN. All Foster Regal products.

Where next?