Label check
Toplux Magnesium Glycinate vs. Electric Tiger: Check the Ratio
Both are three capsules a day. One ratio on the label shows whether all of the magnesium can come from glycinate.
We make Electric Tiger Magnesium Glycinate, which competes with the product compared here. Every figure about Toplux Magnesium Glycinate is read from its own label and listing, checked on 25 September 2026, and linked below. If something has changed, tell us and we will update it. Toplux is a trademark of its owner; Electric Tiger is not affiliated with Toplux Nutrition.
The short answer: both products are three capsules a day, 30 servings a bottle. Toplux's label lists 525 mg of magnesium from 1,750 mg of magnesium glycinate. Ours lists 275 mg of magnesium from 2,500 mg of magnesium glycinate. Magnesium glycinate is at most about 14% magnesium by weight, so dividing a label's magnesium by its glycinate tells you whether all of that magnesium can be coming from glycinate. Toplux's label works out at 30%. Ours works out at 11%. Toplux lists $19.97 a bottle on its site; ours is as low as $16.30 a bottle.
The two labels, side by side
| Toplux Magnesium Glycinate | Electric Tiger Magnesium Glycinate | |
|---|---|---|
| Serving size | 3 veggie capsules | 3 capsules |
| Servings per bottle | 30 | 30 |
| Magnesium per serving | 525 mg (125% DV) | 275 mg |
| Magnesium glycinate per serving | 1,750 mg | 2,500 mg |
| Magnesium ÷ glycinate | 30% | 11% |
| Other ingredients | Hypromellose (capsule), rice flour, silicon dioxide | Hypromellose (capsule), magnesium stearate, silicon dioxide, rice flour |
| Directions | Up to three capsules daily, before a meal | Three capsules once daily |
| Price | $19.97 on its site | As low as $16.30 a bottle |
Why 14% is the ceiling
Magnesium glycinate is one magnesium atom bound to two molecules of the amino acid glycine. Its formula is C4H8MgN2O4, with a molecular weight of 172.42, and the magnesium atom weighs 24.3 of that. So magnesium is about 14.1% of magnesium glycinate by weight, and 1,750 mg of it holds about 247 mg of magnesium. Glycinate that carries water or extra glycine reads a little under 14%. Ours reads 11% — under the ceiling.
A label whose magnesium is well above 14% of its glycinate weight is getting some of its magnesium from another compound. The label does not have to say which, and the Toplux panel does not. If the form matters to you — and it is usually why someone searches for glycinate — ask the maker what else is in the capsule.
Which should you choose?
If you want the most magnesium on the label for the money and the form does not matter to you, the Toplux label lists more magnesium per dollar. If you are buying magnesium glycinate specifically, the ratio is the number to check, and ours is one that glycinate alone can deliver.
Is 525 mg of magnesium a day too much?
The US upper limit for magnesium from supplements is 350 mg a day for adults, set at the level where loose stools start to become more likely; it does not count magnesium in food. A 2023 review argued the limit should be re-evaluated, finding that 7 of 10 trials between 128 and 1,200 mg a day showed no significant difference in diarrhea against control. Toplux's label lists up to 525 mg a day; ours lists 275 mg. If you take more than 350 mg a day from supplements — or have kidney disease, are pregnant or nursing, or take prescription medication — ask your doctor.
How to check any magnesium label
- Find the row that names magnesium on its own. That amount is the magnesium.
- Find the compound in brackets and its weight, if the label gives one.
- Divide the first by the second. For magnesium glycinate, expect about 14% or a little less.
- Compare prices on magnesium, not bottles: our magnesium page has a calculator for price per 100 mg.
Sources
- Toplux Magnesium Glycinate Supplement Facts, directions and price: topluxnutrition.com. Checked 25 September 2026.
- Magnesium glycinate, C4H8MgN2O4, 172.42 g/mol: PubChem CID 84645.
- Electric Tiger Magnesium Glycinate Supplement Facts: product page.
- Institute of Medicine. Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride. National Academies Press, 1997 (NCBI Bookshelf NBK109816).
*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.
Sources
- Perspective: Call for Re-evaluation of the Tolerable Upper Intake Level for Magnesium Supplementation in Adults In 7 of 10 trials between 128 and 1,200 mg a day, magnesium caused no more diarrhea than the comparison.
*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.
