Key Takeaways
✓ "Chelated" means the magnesium is bound to an organic molecule, most often an amino acid such as glycine.
✓ Magnesium glycinate, also called bisglycinate, is the best-known chelated form. Citrate and malate are organic salts; oxide and chloride are inorganic.
✓ On any label, compare elemental magnesium per serving and check whether the chelate is blended with magnesium oxide.
What "chelated" means
Chelate comes from the Greek word for claw. In a chelated mineral, an organic molecule holds the mineral at two or more points, forming a stable ring. With magnesium, that molecule is usually an amino acid. Two glycine molecules holding one magnesium gives magnesium bisglycinate, which most labels shorten to magnesium glycinate.
The word describes how the magnesium is packaged. It does not by itself tell you the amount of magnesium, the quality of the product, or what it will do for you.
The main forms of magnesium
| Group | Examples | Worth knowing |
|---|---|---|
| Amino acid chelates | Glycinate (bisglycinate), taurate, "amino acid chelate" | Magnesium bound to an amino acid. "Amino acid chelate" without a named amino acid tells you less than a named form. |
| Organic salts | Citrate, malate, lactate, gluconate | Magnesium paired with an organic acid. They dissolve well in liquid. |
| Inorganic salts | Oxide, chloride, sulfate, carbonate | Oxide has the most magnesium by weight, but less of it is absorbed. |
Does chelated magnesium absorb better?
A systematic review of 14 comparison studies found that organic forms of magnesium appear to be more bioavailable than inorganic forms, that the percentage absorbed falls as the dose rises, and that all forms can maintain normal levels in healthy people (PMID: 34111673). The NIH makes a similar point: forms that dissolve well in liquid are absorbed more completely than less soluble forms such as oxide (NIH Office of Dietary Supplements).
For the glycine chelate specifically, a controlled trial in 12 patients with part of the small intestine removed found absorption similar to oxide overall, substantially greater in the patients who absorbed oxide worst, and better tolerance with the chelate (PMID: 7815675). That is a small study in a specific group, so it should not be stretched too far.
Research discussed here relates to individual ingredients and does not establish that the finished Veluna product has been clinically studied or will produce the same results.
Is chelated magnesium easier on the stomach?
High amounts of supplemental magnesium can cause loose stools. The NIH notes that the forms most often reported to do this are carbonate, chloride, gluconate and oxide. Many people choose a glycine chelate for that reason, though tolerance varies from person to person and the total amount matters more than the form.
How to read a chelated magnesium label
- Find the elemental magnesium. Chelates are bulky. A label may show a large compound weight and a much smaller magnesium amount. The magnesium amount is the one to compare.
- Look for the word "buffered" or for magnesium oxide in the ingredients. Either one means the chelate is blended with oxide.
- Prefer a named form. "Magnesium glycinate" or "bisglycinate" says more than "magnesium amino acid chelate".
- Check the serving size. The stated amount may refer to two, three or four capsules.
- Stay under the limit. The NIH upper limit for magnesium from supplements is 350 mg a day for adults.
Where Veluna fits
Veluna Magnesium Glycinate is a chelated magnesium glycinate with 275 mg of elemental magnesium per three-capsule serving, from 2,500 mg of magnesium glycinate. It is third-party tested. Magnesium supports normal muscle and nervous-system function. See it with related bundles on the magnesium for sleep page.
Common questions
Is chelated magnesium the same as magnesium glycinate?
Magnesium glycinate is one kind of chelated magnesium, and the most common. Not every chelated product uses glycine. See magnesium glycinate vs. bisglycinate for the naming.
Is magnesium citrate chelated?
Strictly, citrate is an organic salt rather than an amino acid chelate, although some labels use the word loosely. Both belong to the organic group.
When should I take it?
Follow the label. Many people take magnesium in the evening as part of a consistent wind-down. If you take prescription medication, ask a pharmacist about spacing, because magnesium can interfere with how some medicines are absorbed.
References
- Pardo MR, Garicano Vilar E, San Mauro Martín I, Camina Martín MA. Bioavailability of magnesium food supplements: a systematic review. Nutrition. 2021;89:111294. PMID: 34111673
- Schuette SA, Lashner BA, Janghorbani M. Bioavailability of magnesium diglycinate vs magnesium oxide in patients with ileal resection. JPEN J Parenter Enteral Nutr. 1994;18(5):430-435. PMID: 7815675
- National Institutes of Health, Office of Dietary Supplements. Magnesium: Fact Sheet for Health Professionals. ods.od.nih.gov
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and does not constitute medical advice. Talk to a healthcare professional before starting any supplement, especially if you are pregnant, nursing, taking medication, or have a medical condition.
