Magnesium Creatine Chelate: Claims Checked Against the Evidence
Magnesium creatine chelate is creatine bound to magnesium. See the claims, the three small human trials we read, what is not known about its magnesium, and how it compares with monohydrate.
Content last updated . This page has not been medically reviewed.
Uses studied and safety checks for Magnesium Creatine Chelate
Read the safety checks first. Each card says whether a finding comes from people, from the lab or from tradition, which product and way of use was tested, and how strong the evidence is. A finding for one product or one way of using it does not carry over to another.
Check before you use (4)
- Kidney blood test (creatinine) change. In a 16-week trial of elite soccer players, blood creatinine rose with the chelate but stayed within reference values. Creatinine is a kidney blood test.
- Limited safety data for this form. A 2017 review called safety data on magnesium creatine chelate limited and discussed some safety concerns. No source we read shows it is safer than monohydrate.
- Magnesium from supplements and diarrhea. The NHS says high magnesium amounts (over 400 mg) for a short time can cause diarrhea, and 400 mg or less a day from supplements is unlikely to cause harm. Total magnesium from all products counts.
- Product quality and certification. Only 8% of 175 creatine products on one marketplace were third-party certified, and about 88% of alternative-form products were judged to have limited or no evidence for bioavailability, efficacy and safety.
Absorption and bioavailability claims
Not enough evidenceThe chelate is marketed as better absorbed than monohydrate. The 2022 critical review found no data showing it raises blood or muscle creatine more.
Supplements: Not shown in people.
Short-term strength and work output
Preliminary or mixedIn 31 weight-trained men over 10 days, the chelate and plain creatine (each 2.5 g creatine a day) both beat placebo on bench-press work and did not differ from each other.
Supplements: One small short trial; no advantage over creatine alone.
Muscle torque and body water
Preliminary or mixedIn a 2-week trial of 35 people, peak knee torque rose only in the chelate group, and fluid shifted into cells. Body weight rose in the creatine groups.
Supplements: Small, short, and surrogate measures.
Repeated sprints in elite soccer players
Preliminary or mixedIn 20 players (16 finished) over 16 weeks, the chelate improved repeated-sprint results versus placebo. There was no monohydrate group.
Supplements: One small trial; cannot say it beats monohydrate.
Endurance claims
Not enough evidenceMarketing mentions endurance. The trials we read measured strength, torque and repeated sprints, not endurance events.
Supplements: Proper evidence not found for endurance in the sources we read.
Magnesium bonus
Not enough evidenceMagnesium is a mineral involved in ATP reactions, and the chelate is marketed as giving extra magnesium. The sources we read do not state how much magnesium a serving supplies.
Supplements: Proper evidence not found for the amount or for added benefit.
Comparison with creatine monohydrate
Not enough evidenceOnly 3 of 17 trials of alternative forms compared them with monohydrate. Monohydrate is the most studied and lowest-cost form.
Supplements: Monohydrate has the stronger evidence.
Connected topics
Open a group to see how each topic connects and how strong the evidence is.
Health goals (1)
- Peak PerformancePreliminary or mixed
Three small trials found short-term gains in work or sprints, but none showed an advantage over plain creatine.
Body systems (4)
- Bones, Joints & MusclesPreliminary or mixed
Creatine is stored mainly in muscle. Small trials of this form looked at work, torque and sprints.
- Kidney & UrinaryDocumented risk
Creatine raises blood creatinine. Rises stayed within reference values in one 16-week trial. People with kidney disease should ask a clinician first.
- Musculoskeletal SystemPreliminary or mixed
Small trials of this form looked at muscle work output and torque; evidence is limited.
- Urinary SystemDocumented risk
Creatinine-based kidney readings can change with creatine; magnesium is also cleared by the kidneys.
Body parts (3)
- KidneysDocumented risk
Kidneys clear creatinine and magnesium; ask a clinician first if kidney function is reduced.
- MusclesPreliminary or mixed
Trials looked at muscle work, torque and cell water in small groups.
- GutDocumented risk
High magnesium amounts can cause diarrhea; the magnesium amount in this form is not stated in sources read.
Functional actions (1)
- Energy ProductionPreliminary or mixed
Creatine supports the muscle phosphocreatine energy system; benefit of this form over monohydrate was not shown.
Habits (3)
- Resistance TrainingPreliminary or mixed
The trials used weight-trained men and training programs; effects were small-trial findings.
- Strength TrainingPreliminary or mixed
The strongest trial used weight-trained men for 10 days.
- ExercisePreliminary or mixed
Trials tested short, high-intensity efforts.
Biomarkers (1)
- CreatinineDocumented risk
Creatinine rose in the supplement group over 16 weeks but stayed in reference values. Tell the clinician who reads kidney tests.
Conditions & symptoms (1)
- Kidney DiseasesDocumented risk
People with kidney disease should ask a clinician before creatine or magnesium supplements; creatinine rose with this form in a 16-week trial.
What magnesium creatine chelate is
It is creatine joined (chelated) to magnesium and sold as capsules or powder. It is marketed as a more absorbable form of creatine that also gives a magnesium bonus. [4] By weight it holds about 84% creatine, so in theory it can supply creatine if the two parts separate. [4] The magnesium share of the product is not stated in the sources we read, so Proper evidence not found for how much magnesium a serving supplies. By arithmetic, everything except creatine is under about 16% of the weight, so the magnesium is a small part of a serving. Only the label can tell you the actual figure. This page is information only, not advice.How it differs from creatine monohydrate
| Question | Magnesium creatine chelate | Creatine monohydrate |
|---|---|---|
| Studied in people | Three small trials found in a 2022 review [4] | Many trials; see creatine |
| Raises blood or muscle creatine | No data found showing this [4] | Muscle creatine rise shown (see creatine page) |
| Compared head to head | One trial of 10 days [1]; one of 2 weeks with a control group using monohydrate plus a magnesium salt [2] | Is the comparison form |
| Magnesium | Claimed bonus; amount per serving not found | None |
| Safety data | Limited [6] | Longer-term data (see linked pages) |
The same pattern is covered in monohydrate vs other forms and HCl, buffered and other marketed forms.
What research shows
| Who and how many | How long | Form and amount | Result | Label |
|---|---|---|---|---|
| Selsby 2004: 31 weight-trained men [1] | 10 days | Magnesium creatine chelate or creatine, each giving 2.5 g of creatine a day, versus placebo | Both creatine groups did more bench-press work than placebo. Maximum lift did not differ between groups. The two forms performed alike. | Promising but limited |
| Brilla 2003: 35 people [2] | 2 weeks | Chelate, or magnesium oxide plus creatine, each with 5 g creatine and 800 mg magnesium a day | Peak knee torque rose only in the chelate group. Body water shifted into cells. Body weight rose in both creatine groups. | Promising but limited |
| Zajac 2020: 20 elite soccer players, 16 finished [3] | 16 weeks | 5.5 g a day of the chelate versus placebo | Repeated-sprint results improved versus placebo. No monohydrate group. Blood creatinine rose but stayed within reference values. | Insufficient evidence |
| Claims of better absorption, endurance or a magnesium bonus | No trial found measuring blood or muscle creatine for this form [4] | Not applicable | Marketing claim | Insufficient evidence |
Reading the table: the trials are small and short, and the largest group was 35 people. The Selsby result is the clearest comparison and it showed no advantage over creatine alone, which fits what the authors concluded: the chelate's proposed route into the body was no better than the usual one at that amount. [1] The Zajac trial had no external funding and no conflict of interest declared. [3] No trial we read tested endurance sports in a way that supports an endurance claim. A result for one form, one amount and one group does not transfer to others.
Forms, labels and what to check
- Labels may show the creatine amount, the magnesium amount, or only the chelate weight. Check which one is printed.
- Trials gave different amounts of creatine (2.5 g to 5 g) and of the chelate (5.5 g), so they cannot be lined up with a product's serving.
- Ask whether a product is third-party tested, since few are. [7] Price notes: a 2022 systematic review found monohydrate was the lowest-cost form. [5] See comparing supplement labels if you need help reading labels.
Related pages
Frequently asked questions
Is magnesium creatine chelate absorbed better than monohydrate?
No data we read show it. A 2022 critical review found no data that it raises blood or muscle creatine more. [4]
Does it work for strength?
In a 10-day trial of 31 men, it matched plain creatine and both beat placebo on bench-press work. [1] The study was small and short.
How much magnesium is in a serving?
The sources we read do not say. Check the label. One 2-week trial gave 800 mg magnesium a day in each magnesium group. [2]
Is it safer for the stomach or kidneys?
Proper evidence not found. A review called safety data limited. [6]
Can people with kidney disease use it?
Ask a clinician first. Creatinine rose in a 16-week trial, though within reference values. [3]
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Quick safety points
- No source we read shows that magnesium creatine chelate is safer than creatine monohydrate. A 2022 critical review found no evidence it is more bioavailable, effective or safe. [4]
- A 2017 review said safety data for this form are limited and discussed some safety concerns about it. [6]
- In a 16-week trial, blood creatinine (a kidney blood test) rose in the supplement group but stayed within reference values. [3] See creatine, kidney questions and creatinine testing.
- Magnesium from supplements can cause diarrhea at high amounts, and the NHS says 400 mg or less a day from supplements is unlikely to cause harm. [8] People with kidney disease or who take medicines should ask a clinician or pharmacist first.
- Only 8% of 175 creatine products on one marketplace were third-party certified. [7]
Safety and cautions
- Kidneys and blood tests: creatine raises creatinine, which can make kidney tests look worse. People with kidney disease should ask first. [3] Magnesium is cleared by the kidneys; ask a clinician if kidney function is reduced. See magnesium forms compared.
- Medicines: magnesium can interact with some medicines (see magnesium intake levels and the upper limit). Ask a pharmacist.
- Pregnancy, breastfeeding, children: we found no data on this form. Proper evidence not found. Ask a clinician.
- Sport testing and quality: supplements can vary from their labels. Choose tested products if you are tested in sport. [7]
- Other magnesium sources: add up supplements and fortified products, because the diarrhea risk comes from the total. [8]
References
- Selsby JT, DiSilvestro RA, Devor ST. Mg2+-creatine chelate and a low-dose creatine supplementation regimen improve exercise performance. J Strength Cond Res 2004. PMID 15142029 (abstract read). Read 2026-10-24.
- Brilla LR, Giroux MS, Taylor A, Knutzen KM. Magnesium-creatine supplementation effects on body water. Metabolism 2003. PMID 14506619 (abstract read). Read 2026-10-24.
- Zajac A, Golas A, Chycki J, Halz M, Michalczyk MM. The Effects of Long-Term Magnesium Creatine Chelate Supplementation on Repeated Sprint Ability (RAST) in Elite Soccer Players. Nutrients 2020. PMID 32998206 (full text read via Europe PMC PMC7600931). Read 2026-10-24.
- Kreider RB, Jäger R, Purpura M. Bioavailability, Efficacy, Safety, and Regulatory Status of Creatine and Related Compounds: A Critical Review. Nutrients 2022. PMID 35268011 (full text read via Europe PMC PMC8912867; authors have creatine-industry ties). Read 2026-10-24.
- Fazio C, Elder CL, Harris MM. Efficacy of Alternative Forms of Creatine Supplementation on Improving Performance and Body Composition in Healthy Subjects: A Systematic Review. J Strength Cond Res 2022. PMID 36000773 (abstract read). Read 2026-10-24.
- Andres S, Ziegenhagen R, Trefflich I, et al. Creatine and creatine forms intended for sports nutrition. Mol Nutr Food Res 2017. PMID 28019093 (abstract read). Read 2026-10-24.
- Escalante G, Gonzalez AM, St Mart D, et al. Analysis of the efficacy, safety, and cost of alternative forms of creatine available for purchase on Amazon.com: are label claims supported by science? Heliyon 2022. PMID 36544833 (abstract read). Read 2026-10-24.
- NHS (UK). Others: vitamins and minerals, magnesium. Read 2026-10-24.