Magnesium Citrate
Best for
Build key mineral stores
Likely strong benefit for 4–26 weeks · 4 studies , n=228
10 papers · 3 claims · 46 outcomes scored · 1 positive
Outcomes
What magnesium citrate actually does, by outcome
Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.
Essential mineral blood levels rise into optimal range, confirming absorption.
Cramps happen less often, end faster, and hurt less when they strike.
Deeper, less interrupted nights that leave you recharged by morning.
| Outcome | Effect | Evidence | Dose | Weeks | Rank |
|---|---|---|---|---|---|
| Build key mineral stores Likely strong benefit | | 4 RCTs n=228 | 40–450 other | 4–26 wk | #1/5 |
| Ease nighttime leg cramps Probably doesn't help | | 1 RCT n=132 | 300 mg | 4 wk | #1/2 |
| Improve overall sleep quality Not enough research | | 1 meta-analysis n=— Meta-analyzed | 320 mg | 8 wk | — |
Recommended Magnesium Citrate products
Real products that dose Magnesium Citrate where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.
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Bluebonnet
Liquid Magnesium Citrate Mixed Berry Flavor
Well dosed 420 mg/day C formulaBrand audit 82/100
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AN Amazing Nutrition Amazing Formulas
Magnesium Citrate 250 mg
Well dosed 250 mg/day A formula -
Natural Factors
Magnesium Citrate 150 mg
Well dosed 450 mg/day B formula -
Vitanica
Laxablend
Well dosed 250 mg/day A formula -
Integrative Therapeutics
NF Formulas Spectrum 2C With Iron
Well dosed 324 mg/day A formula -
FemTeen Symmetry
Teen Multiple
Well dosed 250 mg/day A formula
Chosen for adequate Magnesium Citrate dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.
Risk profile
Adverse events and known drug interactions
Safety events
Sources
- 1. Effects of Potassium Magnesium Citrate Supplementation on 24-Hour Ambulatory Blood Pressure and Oxidative Stress Marker in Prehypertensive and Hypertensive Subjects. (2016) ↑
- 2. Effects of long-term magnesium supplementation on endothelial function and cardiometabolic risk markers: A randomized controlled trial in overweight/obese adults. (2017) ↑
- 3. Clinical trial on the effects of oral magnesium supplementation in stable-phase COPD patients. (2022) ↑
- 4. Effects of Magnesium Citrate, Magnesium Oxide, and Magnesium Sulfate Supplementation on Arterial Stiffness: A Randomized, Double-Blind, Placebo-Controlled Intervention Trial. (2022) ↑
- 5. Oral magnesium supplementation for insomnia in older adults: a Systematic Review & Meta-Analysis. (2021) ↑
- 6. Oral magnesium supplementation for leg cramps in pregnancy-An observational controlled trial. (2020) ↑
- 7. The effect of acute vs chronic magnesium supplementation on exercise and recovery on resistance exercise, blood pressure and total peripheral resistance on normotensive adults. (2015) ↑
- 8. The BRAzil MAGnesium (BRAMAG) trial: a randomized clinical trial of oral magnesium supplementation in pregnancy for the prevention of preterm birth and perinatal and maternal morbidity. (2014) ↑
- 9. Investigation of Laboratory and Clinical Features of Primary Dysmenorrhea: Comparison of Magnesium and Oral Contraceptives in Treatment. (2022) ↑
- 10. Magnesium supplementation and preeclampsia in low-income pregnant women - a randomized double-blind clinical trial. (2020) ↑
Generated August 14, 2026
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