Uses: Correcting magnesium deficiency, supporting sleep and relaxation, reducing anxiety symptoms, and ideal for patients with gastrointestinal sensitivity.
Key Features: Chelated with glycine, offering high bioavailability and minimal risk of diarrhea.
Uses: Treating constipation (osmotic laxative) and correcting mild magnesium deficiency.
Key Features: Highly absorbable; can cause loose stools at higher doses.
Uses: Constipation, dyspepsia/indigestion; not ideal for correcting deficiency.
Key Features: High elemental magnesium content but very low absorption.
Uses: Supporting energy metabolism and may help with muscle discomfort or fatigue.
Key Features: Contains malic acid (Krebs cycle component). Evidence for fibromyalgia or chronic fatigue is limited but plausible.
Uses: Cognitive support, memory, and brain aging (emerging evidence).
Key Features: Crosses the blood–brain barrier more effectively in animal models; human data are promising but preliminary.
Uses: Cardiovascular support and adjunctive blood pressure regulation.
Key Features: Combines magnesium with taurine, supporting cardiac rhythm and vascular function.
Uses: Correcting magnesium deficiency, supporting muscle and nerve function, and general supplementation.
Key Features: Well-absorbed and gentle on the stomach; topical absorption evidence is mixed.
Uses: Oral strong laxative; bath use for muscle soreness and relaxation.
Key Features: Known as Epsom salt; oral use can cause significant diarrhea.
Uses: Antacid for indigestion/heartburn; converts to magnesium chloride when dissolved.
Key Features: Moderate absorption once converted; less commonly used for supplementation.
Common uses: Laxative (Milk of Magnesia),
antacid.
Absorption: Low; not typically used for
magnesium supplementation.
Notes: Acts locally in the gut; can cause loose
stools.
Common uses: General supplementation.
Absorption: Moderate to high; often included in
“triple magnesium” blends.
Notes: Well tolerated; sometimes used in
combination formulas.
Common uses: Cardiovascular support (popular
in Europe).
Absorption: Moderate; orotic acid carrier.
Notes: More expensive; evidence for superiority
is mixed.
Common uses: General supplementation.
Absorption: Good; gentle on the stomach.
Notes: Often recommended for individuals who
cannot tolerate citrate.
Common uses: Supplementation for sensitive
stomachs.
Absorption: High; well tolerated.
Notes: Frequently recommended for long‑term
supplementation.
| Form of Magnesium | Primary Uses | Key Features / Notes |
|---|---|---|
| Magnesium Glycinate | Deficiency correction, sleep, relaxation, anxiety support | Highly bioavailable; gentle on stomach; low diarrhea risk |
| Magnesium Citrate | Constipation, mild deficiency | Highly absorbable; osmotic laxative; may cause loose stools |
| Magnesium Oxide | Constipation, indigestion | High elemental magnesium but poor absorption (don't use
for correction of deficency) |
| Magnesium Malate | Energy metabolism, muscle discomfort | Contains malic acid; limited evidence for
fibromyalgia/chronic fatigue |
| Magnesium L-Threonate | Cognitive support, memory (emerging research/evidence) |
Crosses blood–brain barrier; human evidence emerging |
| Magnesium Taurate | Heart health, blood pressure support | Combines magnesium + taurine; supports cardiac rhythm |
| Magnesium Chloride | Deficiency correction, general supplementation | Well-absorbed; gentle; topical evidence mixed |
| Magnesium Sulfate | Laxative, muscle relaxation (bath - mostly anectdotal) | Epsom salt; strong laxative if taken orally |
| Magnesium Carbonate | Antacid, digestive support (indigestion/heartburn) |
Converts to magnesium chloride; moderate absorption
after conversion in the stomach |
| Magnesium Hydroxide | Laxative, antacid | Milk of Magnesia; not ideal for supplementation |
| Magnesium Aspartate | General supplementation | Often used in combination blends |
| Magnesium Orotate | Cardiovascular support | More expensive; evidence mixed |
| Magnesium Gluconate | General supplementation | Gentle on stomach |
| Magnesium Lactate | General supplementation | Well tolerated; good for sensitive stomachs |
Magnesium is essential for neuromuscular, cardiovascular, and metabolic health. Deficiency can contribute to significant dysfunction, and supplementation should be tailored to individual needs. Dietary intake from leafy greens, nuts, seeds, legumes, and whole grains remains foundational, with supplementation used when clinically indicated.