Magnesium Supplements
Magnesium is an essential mineral found in many foods and sold in several supplemental forms — glycinate, citrate, malate, oxide, and others. According to NIH Office of Dietary Supplements materials, many people do not meet recommended intake from food alone, but supplements add intake on top of diet and should be evaluated with label clarity in mind. SuppCheckr educational guides explain forms and safety context — including our magnesium glycinate vs citrate guide (also useful if you searched magnesium citrate vs glycinate) — and product reviews compare elemental magnesium per serving, not compound weight alone.
Last updated: 2026-06-30 · Last reviewed: 2026-06-30
What SuppCheckr evaluates
SuppCheckr scores magnesium products using the magnesium scoring profile: label transparency (especially elemental magnesium disclosure), form identification, formula simplicity, third-party testing documentation (verified vs. marketing-only claims), dated manual price value (including price per 100 mg elemental magnesium), additives, and brand transparency. Scores reflect label and sourcing quality — not personal outcomes. SuppCheckr does not rank magnesium products for sleep, anxiety, constipation, blood pressure, migraines, cognition, or any medical condition.
Coverage scope
This magnesium category includes five product reviews across distinct form buckets (glycinate, citrate, malate, transparent mixed-form fallback, and budget oxide). The category comparison table covers the same five SKUs. Chloride, taurate, gummies, and topical products are guide-only for now. No L-threonate product review is included.
Ingredient reference
Related guides
Buying considerations
- Confirm the Supplement Facts panel lists elemental magnesium (mg) per serving — not compound or chelate weight alone.
- Identify the magnesium form (glycinate, citrate, malate, oxide, etc.) and read marketing claims conservatively.
- Check whether third-party testing is verified (certificate or recognized program listing) or only claimed in marketing copy.
- Compare value using price per 100 mg elemental magnesium when servings are disclosed clearly.
- Consider total dietary magnesium from food plus any supplemental intake; NIH publishes RDAs and a supplemental UL for adults.
- Consult a qualified healthcare professional before starting or changing supplements, especially if pregnant, nursing, under 18, taking medication, managing kidney disease, or managing a medical condition.
Product reviews
Open full comparison table| Product | Score | Price / 100 mg elemental |
|---|---|---|
| Klean Athlete Klean Magnesium (90 Vegetarian Capsules) | SuppCheckr Score81/100 | $0.24 (dated) |
| Nutricost Magnesium Citrate Capsules (120 Capsules) | SuppCheckr Score79/100 | $0.11 (dated) |
| NOW Magnesium Malate 1000 mg Tablets (180 Tablets, SKU 1300) | SuppCheckr Score78/100 | $0.13 (dated) |
| Nature Made Magnesium Oxide 250 mg Tablets (100 Tablets) | SuppCheckr Score77/100 | $0.02 (dated) |
| Pure Encapsulations Magnesium (Citrate/Malate) (180 Capsules) | SuppCheckr Score71/100 | $0.17 (dated) |
Manual prices with last-checked dates on each product page — check current price at the retailer.
FAQ
- Why does SuppCheckr emphasize elemental magnesium on labels?
- Different magnesium salts and chelates contain different amounts of elemental magnesium per unit weight. Comparing products by compound weight alone can mislead; elemental mg per serving supports apples-to-apples dose and value comparisons.
- Does a higher SuppCheckr score mean a magnesium product will work for me?
- No. Scores summarize label transparency, testing documentation, and dated price context using our methodology — not personal medical suitability or outcome guarantees.
- Which magnesium form is best for sleep or anxiety?
- SuppCheckr does not rank magnesium products for sleep, anxiety, or any medical condition. Our guides describe common form differences for label literacy only. Consult a qualified healthcare professional for personal medical questions.
Sources
- Magnesium — Consumer Fact Sheet — NIH Office of Dietary Supplements (NIH)
- Magnesium — Health Professional Fact Sheet — NIH Office of Dietary Supplements (NIH)
- FDA — Dietary Supplements — U.S. Food and Drug Administration (FDA)
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