Guide
Magnesium glycinate with calcium, potassium and electrolytes
Magnesium carries an EU-authorised electrolyte-balance claim. Here's what's documented about combining it with calcium and potassium, and where a large calcium dose can compete with magnesium for absorption.
Yes, magnesium is one of the body's principal electrolytes — the EU authorises a claim that magnesium contributes to electrolyte balance, alongside sodium, potassium and calcium. You can take magnesium glycinate and calcium together; the interaction worth knowing about is that a markedly high calcium intake can reduce magnesium absorption, and vice versa, when one mineral is well in excess of the other.
Is magnesium glycinate an electrolyte?
Magnesium is one of the four minerals usually grouped as the body's major electrolytes, along with sodium, potassium and calcium. EU Regulation 432/2012 authorises the specific claim that magnesium "contributes to electrolyte balance," and our 275 mg elemental serving — 73% of the EU reference value — clears the threshold to carry it. That's true regardless of which magnesium salt is used; electrolyte balance is a function of the elemental mineral, not the glycinate chelate specifically.
Calcium and magnesium: what actually competes
A review of mineral-mineral interactions in human nutrition names calcium-magnesium as one of a handful of pairs with real nutritional significance — alongside sodium-potassium, iron-copper and zinc-copper — and notes these interactions matter most when one mineral is markedly in excess of the other and the second is close to its minimum requirement. The review doesn't give a specific dose threshold for calcium and magnesium, and no controlled human trial we've reviewed quantifies exactly how much excess calcium is needed to meaningfully reduce magnesium absorption at ordinary supplement doses.
In practice, this means a moderate calcium supplement alongside a moderate magnesium supplement isn't a documented problem. It's a reason to notice if you're taking a large calcium dose — many calcium supplements are 500–1,000 mg per serving — stacked with a magnesium supplement, and to consider spacing them if you'd rather not have them competing for absorption at the same time, rather than a reason to avoid either.
Potassium: a separate electrolyte, not a documented interaction
Potassium is grouped with magnesium as an electrolyte, but that's a shared category, not a documented interaction between the two minerals at supplement doses. We haven't found controlled evidence that taking magnesium glycinate changes how potassium is absorbed or used, or the reverse. If you're on a potassium-affecting medication — some diuretics and blood pressure medications change how the body handles potassium and magnesium together — that's a conversation for your doctor rather than something a label can resolve.
What's actually established for magnesium as an electrolyte
| Established | Not established |
|---|---|
| Magnesium contributes to electrolyte balance (EU 432/2012), at an adequate intake. | That a magnesium supplement corrects an electrolyte imbalance diagnosed by a doctor — that's a medical situation, not a supplement one. |
| Magnesium is grouped with sodium, potassium and calcium as a major electrolyte. | That taking magnesium alongside these other minerals produces a documented combined effect beyond each mineral's own role. |
Why "electrolyte" formulas usually combine several minerals
Sports drinks and electrolyte powders typically combine sodium, potassium, magnesium and sometimes calcium because all four are lost through sweat and all four have their own established roles in fluid and mineral balance. That's a formulation choice based on each mineral's independent function, not evidence that the combination works better than replacing whichever mineral you're actually short on. A magnesium-only product like ours addresses one part of that picture; it isn't a substitute for a broader electrolyte replacement product if you've lost a lot of fluid through heavy sweating.
Our product
Electric Tiger Magnesium Glycinate is magnesium only — 275 mg of elemental magnesium from 2,500 mg of magnesium glycinate per three-capsule serving, no added calcium or potassium. Full panel here.
Questions people ask
Is magnesium glycinate an electrolyte?
Yes. Magnesium is one of the body's four major electrolytes, and the EU authorises a specific "contributes to electrolyte balance" claim for magnesium at an adequate intake.
Can you take magnesium glycinate and calcium together?
Yes, at ordinary supplement doses this isn't a documented problem. The interaction to watch for is a large calcium dose taken alongside magnesium, since the two minerals can compete for absorption when one is well in excess of the other.
Can you take calcium and magnesium glycinate together?
Yes. If your calcium supplement is a large dose (many are 500 mg or more per serving), spacing it a few hours from your magnesium is a reasonable precaution, though no trial has quantified exactly how much this matters at ordinary doses.
Does magnesium glycinate contain potassium?
No — our product is elemental magnesium from magnesium glycinate only. Potassium is a separate mineral and electrolyte, sold as its own supplement or found in foods like bananas, potatoes and leafy greens.
Related reading
- Magnesium glycinate and zinc
- Magnesium glycinate benefits: what's established and what isn't
- How much magnesium glycinate should you take a day?
- How much magnesium glycinate is too much?
Sources
- O'Dell BL. "Mineral interactions relevant to nutrient requirements." J Nutr 1989;119(12 Suppl):1832-8. PMID 2693644.
- Commission Regulation (EU) No 432/2012, magnesium entries.
- Electric Tiger Magnesium Glycinate Supplement Facts: product page.
Sources
- Mineral interactions relevant to nutrient requirements A 1989 review names calcium-magnesium as a nutritionally significant mineral pair, and identifies zinc's main practical interaction as being with copper, not magnesium.
*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.
