What Is Magnesium Glycinate? Benefits, Dosage & Timing
By Jelena Savic, BHSc (Naturopathy) · Published 10 November 2026 · 7 min read
Quick answer: Magnesium glycinate is magnesium bound to glycine, an amino acid. Your body uses magnesium for normal muscle and nerve function, energy production and building protein. When you choose a supplement, check how much elemental magnesium each serve gives you, take it as the label directs and think about what your diet already gives you. 1,3,6
What is magnesium glycinate?
Magnesium glycinate is one form of magnesium used in supplements. Magnesium is the mineral, and glycinate means it's bound to glycine, an amino acid. You may also see it called magnesium bisglycinate or diglycinate on labels and in research. 3,4
Elemental magnesium: The amount of magnesium itself, not the weight of the whole compound. This is the number to look for when you compare doses. 1
Bioavailability: How much of the magnesium becomes available to your body after you swallow it. The form plays a part, and the dose, the formula, food and how much magnesium you already have can all affect it too. 3
What does magnesium glycinate do?
Magnesium glycinate gives your body magnesium. You use this mineral for energy production, building protein, nerve signals and normal muscle contraction. These roles are why magnesium matters in your diet. They don't mean extra magnesium will improve every athlete's performance or recovery. 1,6
Food is the place to start. Nuts, seeds, legumes, wholegrains and green leafy vegetables all give you magnesium. A supplement adds to what you already get from food. 1,2
Can magnesium glycinate help with muscle cramps?
Whether magnesium helps with cramps during exercise is still an open question. The 2020 Cochrane review of magnesium for skeletal muscle cramps found no randomised trials on exercise-associated cramps among the studies it included. So it can't tell us either way. 8
Cramps during exercise also have several contributing factors, so don't automatically assume they mean you're low in magnesium. A 2022 review of exercise-associated cramps emphasised each person's own risk factors. 7
How is magnesium glycinate different from other forms?
Glycinate, citrate and oxide all supply magnesium. They're different chemical forms, and small studies and reviews point to some differences in how well each is absorbed. No single form is best for every person or goal. 1,3,5
| Comparison point | Magnesium glycinate | Magnesium citrate | Magnesium oxide |
|---|---|---|---|
| What it is | Magnesium bound to glycine, an amino acid | Magnesium supplied as citrate | Magnesium supplied as oxide |
| Who was studied | 12 people who'd had part of their small intestine removed | 46 healthy adults | Used as the comparison in both studies |
| What the study found | Better tolerated than oxide, with similar absorption overall | Higher on some absorption measures than an amino-acid chelate and oxide | Lower on absorption measures than the other forms in healthy adults |
The diglycinate trial was small, and the healthy-adult trial tested an amino-acid chelate, not a glycinate product specifically. Neither one measured muscle recovery. 4,5
The formula matters too. Research comparing commercial magnesium supplements found big differences in how well they dissolved and how well they were absorbed. So the form name alone doesn't tell you how a finished supplement behaves. 10
Is magnesium glycinate gentler on the stomach?
Magnesium glycinate may be gentler on the stomach. In the small diglycinate trial above, it was better tolerated than magnesium oxide, and overall absorption didn't differ between the two. 4
The people in that trial had had part of their small intestine removed, so the results may be different for healthy gym-goers. Magnesium supplements can cause diarrhoea, nausea and stomach cramps, particularly at higher intakes. 1,4
If your stomach doesn't agree with a supplement, look at the elemental dose and the full formula, and get advice if symptoms appear. 1,3
How much magnesium glycinate should you take?
How much you need depends on your age, your sex and what your diet already gives you. For adults aged 19 and over, the AU/NZ recommended dietary intakes are 310–320 mg a day for women and 400–420 mg a day for men. 2
These figures are for your total intake from food and supplements together. If you're 18, the 14–18-year figures apply instead. 2
How do you read an elemental magnesium label?
- Find the amount described as magnesium, elemental magnesium or equivalent magnesium.
- Check whether that amount applies to one capsule, one scoop or the full daily serving.
- Follow the label for how many serves to take each day.
- If you take other supplements or medicines that contain magnesium, check with a pharmacist before combining them. 1,2
When should you take magnesium glycinate?
Take magnesium glycinate when the product label says. Research hasn't found a best time of day for it, or a recovery window after training that's specific to glycinate. So if your label says after sport or exercise, take it then. 1,3,6
Magnesium can interfere with how your body absorbs some antibiotics and oral bisphosphonates (a type of bone medicine). If you take either, ask a pharmacist how far apart to take them, because the gap depends on the medicine. 1
What should you look for in a magnesium glycinate powder for muscle recovery?
Look at the elemental magnesium per serve, the full ingredient list, the directions and how your stomach handles it. If you compete in drug-tested sport, also check that it's batch tested for banned substances. 3,6,10,11
Musashi Magnesium Muscle Recovery+ is a Fruit Punch powder, sold in Australia, made with magnesium glycinate, vitamin D3 and zinc glycinate. Each 6 g serve provides: 9
| Listed active ingredient | Amount per 6 g serve |
|---|---|
| Magnesium from magnesium glycinate | 400 mg elemental magnesium |
| Vitamin D3 as colecalciferol | 15 micrograms, equivalent to 600 IU |
| Zinc from zinc glycinate | 10 mg elemental zinc |
The 400 mg is elemental magnesium, the magnesium itself, so it's a high-strength serve. The label says to take one serve once a day, after sport or exercise, and that one serve is the full daily amount. If you take other magnesium products or medicines, check with a pharmacist first. 9
It's Informed Sport certified, so every batch is tested for banned substances before release. It contains sucralose and sulfites. Supplements shouldn't replace a balanced diet. 9,11
Key takeaways about magnesium glycinate
- Magnesium glycinate is magnesium bound to glycine. Elemental magnesium is the dose number to check. 1,4
- Magnesium supports normal muscle and nerve function, energy production and building protein. 1,6
- Glycinate may be gentler on the stomach than oxide, based on one small study. 4
- The AU/NZ recommended intake for adults is 310–420 mg a day from food and supplements, depending on age and sex. 2
- Follow the label, and check with a pharmacist if you combine magnesium products or take medicines. 1,2
Frequently asked questions about magnesium glycinate
Is magnesium the same as magnesium glycinate?
Magnesium glycinate is one form of magnesium: the mineral bound to glycine, an amino acid. When you compare supplements, look for the elemental magnesium per serve, not the weight of the whole compound. The form name on its own won't tell you how well a product is absorbed or tolerated, or whether it helps recovery. 1,3,4
How much magnesium glycinate should you take each day?
Magnesium glycinate doses vary by product, so check the elemental magnesium per serve and follow the label. For adults aged 19 and over, the AU/NZ recommended intake is 310–320 mg a day for women and 400–420 mg a day for men. That's your total from food and supplements together. Check with a pharmacist if you combine magnesium products. 1,2
Should you take magnesium glycinate before or after exercise?
Take magnesium glycinate when the product label says, whether that's before or after exercise. Research on absorption and exercise hasn't found a best time, or a recovery window specific to glycinate. If you take medicines, ask a pharmacist about spacing, because magnesium can interfere with how your body absorbs some antibiotics and oral bisphosphonates. 1,3,6
Is magnesium glycinate gentler on the stomach?
Magnesium glycinate may be gentler on the stomach than magnesium oxide. In one small study, diglycinate was better tolerated than oxide, with similar absorption overall. The people in it had part of their small intestine removed, so results may differ for healthy gym-goers. Magnesium supplements can still cause diarrhoea, nausea or stomach cramps, so get advice if symptoms appear. 1,4
What is the best magnesium glycinate powder for muscle recovery?
The best magnesium glycinate powder for muscle recovery depends on your diet, your training and how your stomach handles it. Compare the elemental magnesium per serve, the full ingredient list and the directions. If you compete in drug-tested sport, choose a product that's batch tested for banned substances. Musashi Magnesium Muscle Recovery+ is one example, with 400 mg of elemental magnesium from glycinate in its once-a-day serve and Informed Sport certification. 3,6,9,11
References
- National Institutes of Health, Office of Dietary Supplements. (2026). Magnesium: Fact sheet for health professionals. National Institutes of Health. NIH ODS magnesium fact sheet
- National Health and Medical Research Council, Australian Government Department of Health and Ageing, & New Zealand Ministry of Health. (2006). Magnesium. In Nutrient reference values for Australia and New Zealand including recommended dietary intakes. NRV magnesium page
- Schuchardt, J. P., & Hahn, A. (2017). Intestinal absorption and factors influencing bioavailability of magnesium—An update. Current Nutrition & Food Science, 13(4), 260–278. DOI record
- Schuette, S. A., Lashner, B. A., & Janghorbani, M. (1994). Bioavailability of magnesium diglycinate vs magnesium oxide in patients with ileal resection. Journal of Parenteral and Enteral Nutrition, 18(5), 430–435. DOI record
- Walker, A. F., Marakis, G., Christie, S., & Byng, M. (2003). Mg citrate found more bioavailable than other Mg preparations in a randomised, double-blind study. Magnesium Research, 16(3), 183–191. PubMed record
- Zhang, Y., Xun, P., Wang, R., Mao, L., & He, K. (2017). Can magnesium enhance exercise performance? Nutrients, 9(9), 946. DOI record
- Miller, K. C., McDermott, B. P., Yeargin, S. W., Fiol, A., & Schwellnus, M. P. (2022). An evidence-based review of the pathophysiology, treatment, and prevention of exercise-associated muscle cramps. Journal of Athletic Training, 57(1), 5–15. DOI record
- Garrison, S. R., Korownyk, C. S., Kolber, M. R., Allan, G. M., Musini, V. M., Sekhon, R. K., & Dugré, N. (2020). Magnesium for skeletal muscle cramps. Cochrane Database of Systematic Reviews, 2020(9), CD009402. DOI record
- Musashi. (2026). Magnesium Muscle Recovery+. Musashi Australia. Musashi product page
- Blancquaert, L., Vervaet, C., & Derave, W. (2019). Predicting and testing bioavailability of magnesium supplements. Nutrients, 11(7), 1663. DOI record
- Informed Sport. (n.d.). Sports supplements certification. Informed Sport. Informed Sport
The information in this article is for educational purposes only and is not intended as medical advice. Always read the label and follow the directions for use. If symptoms persist, consult your healthcare professional. Musashi products are formulated for healthy adults; consult a healthcare professional before use if you have a pre-existing medical condition, are pregnant or breastfeeding, or are taking medication.
