PlainVitamins

Magnesium Oxide 400 mg

by Geri-Care · tablet or pill · 120 coated tablets

  • On the market (NIH)
  • UPC 3 57896 63412 4
  • DSLD label 309690
  • Serving 1 to 2 tablets; amounts per 2 tablets
  • 60 servings

Magnesium Oxide 400 mg by Geri-Care lists one ingredient: 480 mg of magnesium per serving of 2 tablets. Its current label entered the NIH Dietary Supplement Label Database on June 20, 2024.

What is in Magnesium Oxide 400 mg?

Each row as the label prints it, per serving of 2 tablets. 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 Oxide 400 mg: Supplement Facts rows against the market (DSLD label 309690, January 2026 release)
IngredientAmount% DVAmong products listing it
Magnesium480 mg114%Magnesium in Magnesium Oxide 400 mg against 14,003 products480 mg per serving; the middle half of products list 30 mg to 200 mg, the median 86 mg.UL 350 mgDV 420 mg480 mg

Higher than 96% of 14,003 products listing magnesium (median 86 mg). 1.4 times the adult UL a day.

Source: NIH ODS Dietary Supplement Label Database, label 309690 (entered June 20, 2024), 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 1 serving a day, the most its directions give, the label lists 480 mg of magnesium, 1.4 times the adult Tolerable Upper Intake Level.

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.

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: Adults-Take 1 to 2 tablets daily as a dietary supplement, or as directed by a doctor.
Warnings
Do not exceed recommended dose.
Warnings; Consult a physician before use if you are taking any prescription drug or if you have kidney disease.
May have a laxative effect.
As with any supplement, if you are pregnant, nursing or taking medication, ask a health professional before use.
Keep out of reach of children.
In case of overdose, get medical help or contact a Poison Control Center right away. Tamper Evident: Do not use if imprinted seal under cap is missing or broken.
Storage
Store at room temperature.

Source: label statements in DSLD label 309690.

What else is on the label?

Other ingredients: Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Magnesium Stearate, Hypromellose, Talc, Titanium Dioxide, Polyethylene Glycol, Wax.

How many labels does Magnesium Oxide 400 mg have?

3 labels are on file under this name since October 25, 2018: other sizes, label designs and reformulations. The current one leads this page.

  1. Label 309690 (current) Entered June 20, 2024 · on the market · 120 coated tablets · UPC 3 57896 63412 4
  2. Label 255316 Entered September 24, 2021 · off the market August 18, 2023 · 120 coated tablets · UPC 3 57896 63412 4
  3. Label 176733 Entered October 25, 2018 · off the market June 16, 2021 · 120 tablets · UPC 3 57896 63412 4

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

Who makes it?

The label names Geri-Care Pharmaceuticals Corp. (distributor), Brooklyn, NY. All Geri-Care products.

Where next?