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#17 in Minerals Third-Party Tested

Nature Made Magnesium Oxide 250mg

by Nature Made

"USP Verified magnesium at the lowest price — 250mg magnesium oxide from the #1 pharmacist-recommended brand"

Amazon Rating
4.7/5
Reviews
20,000+
Price Range
$8-12
Servings
200 tablets
USP VerifiedGMP Certified
Our Editorial Rating
7.4
Good
FormTablet
CategoryMinerals
SubcategoryMagnesium Oxide (Mainstream)
View on Amazon

Overview

Nature Made Magnesium Oxide provides 250mg of elemental magnesium from magnesium oxide in a USP Verified tablet. Magnesium oxide has the highest elemental magnesium content per gram of any magnesium form (60% elemental vs 14% for glycinate), making it the most efficient way to deliver magnesium in a single tablet. While absorption is lower than chelated forms (4% vs 30-40% for glycinate), the higher elemental content partially compensates. With 200 tablets for under $12 and USP Verified quality, this is the most affordable quality magnesium available.

Key Ingredients

IngredientAmount
Magnesium (as Oxide)250 mg

Pros & Cons

What We Like

  • USP Verified quality
  • 200 tablets (6+ month supply)
  • Under $12 (cheapest quality magnesium)
  • #1 pharmacist-recommended brand
  • 20,000+ Amazon reviews

What Could Be Better

  • Oxide form (lower absorption ~4%)
  • Can cause loose stools
  • Not ideal for sleep (glycinate better)
  • Large tablet

Who Is This For?

Best For

  • Budget magnesium supplementation
  • Those wanting USP Verified quality
  • General magnesium deficiency
  • Those who tolerate oxide form

Not Ideal For

  • Sleep support (use glycinate)
  • Those with GI sensitivity
  • Those wanting maximum absorption

Our Verdict

7.4/10 — Good

Nature Made Magnesium Oxide is the mainstream budget magnesium — USP Verified, 200 tablets, and under $12. The oxide form has lower absorption but higher elemental content. For general magnesium needs on a budget, it's the pharmacist-recommended choice.

Alternatives to Consider