Take all three capsules and you're at 400mg of elemental **Magnesium** — the top of the clinically studied supplemental range for supporting muscle function, energy production, and sleep quality. The citrate form absorbs well, and since magnesium deficiency affects an estimated half the population without obvious symptoms, this dose can make a real difference if your dietary intake falls short.

Your health dimensions here are broad: **Magnesium** plays a role in everything from stress response and heart rhythm to bone density and mood regulation. At the full serving, you're well-covered across these areas. The capsule format also lets you scale down to one or two capsules if you're already getting magnesium from food or other supplements.

The 400mg dose slightly exceeds the 350mg tolerable upper limit for supplemental magnesium, and citrate specifically can have a mild laxative effect. Splitting the three capsules across the day — as the label recommends — helps with both tolerance and absorption.

BioStacks
NOW

Magnesium Citrate

1 Capsule · 40 servings

iHerbAmazon
Track this supplement · Get started free

What it does

Magnesium

magnesium citrateStandard

magnesium citrate: Supports normal muscle function; small studies found citrate better absorbed than oxide, with possible laxative effects.

Heart
Ask AI about this product

Ingredients (1)

Other ingredients

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

HypromelloseCapsule

Plant-derived capsule material from cellulose

Lab testing

How to take it

With or without food
Space it a couple of hours from Iron and Calcium

On the label

Suggested Usage:Take 3 capsules daily, preferably in divided doses, with food.

Price check

$12.24

$10$20$50

Cheaper than 86% of 579 magnesium supplements

Similar products

Magnesium Glycinate 400 mg

Bluebonnet

Magnesium Glycinate 400 mg

😴 for Sleep

100
Cognitive Health

Cooper Complete

Cognitive Health

😴 for Sleep

100
Magnesium Glycinate 500 mg

DC

Magnesium Glycinate 500 mg

❤️ for Heart

100
NeuroMag™

Designs for Health

NeuroMag™

😴 for Sleep

100
Magnesium Taurate 1500 mg

Double Wood Supplements

Magnesium Taurate 1500 mg

❤️ for Heart

100

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

Not medical advice. Consult your healthcare professional.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • Manifesto
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Pricing
  • Terms of Service
  • Privacy Policy
  • Refund Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart

Free Tools

  • Interaction Checker
  • Dose Checker
  • Form Comparison

Field Guides

  • Magnesium for sleep
  • Reading labels
  • Interaction checker
  • Dose checker
  • Harmful ingredients
  • Proprietary blends
  • Stack building
  • Scan without barcode
  • All guides →
© 2026 BioStacks. All rights reserved. Not medical advice.