Guide
Magnesium glycinate and potassium
Magnesium glycinate and potassium can be taken together — a classic review of mineral-mineral interactions doesn't list them as a significant interacting pair. The bigger practical difference is dosing: potassium supplements are capped at 99 mg per serving in the US, far below what a typical magnesium capsule provides.
Yes, you can take magnesium glycinate and potassium together. A classic review of nutritionally significant mineral-mineral interactions doesn't list magnesium and potassium as a pair worth flagging — the electrolyte interaction it does name is sodium and potassium. The more practically important difference between the two supplements is dosing: potassium is capped far lower than magnesium in any US over-the-counter product.
What the interaction literature actually says
A 1989 review of mineral-mineral interactions relevant to human nutrient requirements lists the pairs it considers nutritionally significant: sodium-potassium, calcium-magnesium, manganese-iron, iron-copper and zinc-copper. Magnesium-potassium isn't on that list. The review's framework is that these interactions matter when one mineral in a pair is present in excess and the other is near the lower limit of requirement — and it identifies calcium, not potassium, as magnesium's practically relevant mineral partner (covered in magnesium glycinate with calcium, potassium and electrolytes).
Why potassium supplements look so different from magnesium ones
If you've compared labels, you may have noticed magnesium supplements commonly provide 200–400 mg per serving, while potassium supplements rarely go above 99 mg. That's not a formulation choice — it's a US regulatory limit. Following a documented history in the 1960s and 1970s of higher-dose potassium chloride tablets being linked to small-bowel injury, FDA has found potassium chloride drug products delivering more than 99 mg of potassium unsafe, and most dietary supplement makers cap OTC potassium products at 99 mg per serving as a result.
That cap has a real practical consequence: with an adult adequate intake for potassium running roughly 2,600–3,400 mg a day, a 99 mg supplement dose can only ever supply a small fraction of it. Potassium intake is meant to come mainly from food — foods like potatoes, beans, leafy greens and dairy carry far more potassium per serving than any OTC tablet is allowed to. Magnesium doesn't have an equivalent single-dose cap; the 350 mg/day supplemental upper limit is a total-intake guideline, not a per-serving regulatory ceiling the way potassium's 99 mg is.
Why the two are sometimes marketed together anyway
Potassium carries its own EU-authorised nutrient-function claims for contributing to the maintenance of normal muscle function and normal nervous system function (Regulation (EU) 432/2012, EFSA Journal 2010;8(2):1469, IDs 320 and 386) — claims that run parallel to magnesium's own authorised claims for muscle and nervous system function. That overlap in authorised wording, not a documented interaction between the two minerals, is the most likely reason they turn up together in "electrolyte" formulas.
Our product
Electric Tiger Magnesium Glycinate is a single-ingredient product: 275 mg of elemental magnesium from 2,500 mg of magnesium glycinate per three-capsule serving, no added potassium. If you're taking a separate potassium supplement or getting potassium from food, there's no documented reason to change either based on the other — ask your doctor or pharmacist before adding a potassium supplement if you take a prescription medication, since several common ones change how your body handles potassium.
Questions people ask
Can you take magnesium glycinate and potassium together?
Yes. The main review of nutritionally significant mineral interactions doesn't flag magnesium and potassium as a pair to watch, unlike sodium-potassium or calcium-magnesium.
Why is the potassium dose so much lower than the magnesium dose in supplements?
US regulation caps OTC potassium supplements at 99 mg per serving, following a documented safety history with higher-dose tablets. Magnesium has no equivalent per-serving cap, only a 350 mg/day total supplemental upper limit.
Should I take a potassium supplement instead of getting it from food?
At a 99 mg per-serving cap, a supplement supplies only a small fraction of the roughly 2,600–3,400 mg adult adequate intake for potassium. Food sources like potatoes, beans, leafy greens and dairy carry far more potassium per serving than a supplement is permitted to.
Is it safe to take a potassium supplement alongside prescription medication?
Several common prescription medications, including potassium-sparing diuretics and ACE inhibitors, change how your body handles potassium. Ask your doctor or pharmacist before adding a potassium supplement if you take a prescription medication of any kind.
Related reading
- Magnesium glycinate with calcium, potassium and electrolytes
- Magnesium glycinate and zinc
- How much magnesium glycinate should you take a day?
- Magnesium glycinate and medications: what to check
Sources
- O'Dell BL. "Mineral interactions relevant to nutrient requirements." J Nutr. 1989;119(12 Suppl):1832-8. PMID 2693644.
- National Institutes of Health, Office of Dietary Supplements. Potassium – Health Professional Fact Sheet.
- EFSA Journal 2010;8(2):1469 (potassium, IDs 320, 386), Regulation (EU) 432/2012.
- 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.
