Nutrition Geeks Magnesium Glycinate 3-in-1 Review
Nutrition Geeks · Last updated 10 April 2026
Trust Checklist2/6 passed
3rd Party Batch Tested
No public 3rd party batch test results available
No Fillers or Binders
Contains fillers, binders, or inactive ingredients
No Oxide Buffering
Contains or likely contains cheap magnesium oxide
Pure Magnesium Glycinate
Labelled as glycinate but likely oxide-buffered
GMP Certified Facility
Manufactured in a GMP-certified facility
Made in the UK
Manufactured in the United Kingdom
Rating Breakdown
Pros & Cons
Pros
- Cheapest product in the test at £9.99
- Lab confirmed the elemental magnesium content matches the label (385mg vs 384mg claimed)
- Multi-form approach covers glycinate, malate, and citrate benefits
- 90 vegan capsules in a recyclable pouch
- Claims 102% NRV per serving
Cons
- 130mg elemental gap between label maths and what the listed forms can provide
- Listed forms add up to 254mg elemental — label claims 384mg — the 130mg gap points to unlisted oxide
- Transparency is the worst in our test — hidden ingredients undermine the 3-in-1 concept
- If you're choosing this for the glycinate benefits, a significant portion may actually be poorly-absorbed oxide
- Contains rice flour and magnesium stearate as fillers alongside the capsule shell
Product Details
- Magnesium Form
- Multi-form Complex (Glycinate, Malate, Citrate) — Likely Oxide-Buffered
- Dosage per Serving
- 1,800mg magnesium blend (glycinate 1,000mg + malate 400mg + citrate 400mg)
- Elemental Magnesium
- 384mg (claimed) — 385mg (lab tested) — but only 254mg from listed forms
- Serving Size
- 2 capsules
- Servings per Container
- 45
- Price
- £9.99
- Price per Serving
- £0.22
- Other Ingredients
- Hypromellose (capsule shell), Rice flour, Magnesium stearate
- Certifications
- GMP Certified, Made in UK, Vegan
Full Review
Ingredient Quality
This is where the Nutrition Geeks product falls apart under scrutiny. The label lists a 3-in-1 blend per 2-capsule serving: 1,000mg magnesium glycinate, 400mg magnesium malate, and 400mg magnesium citrate — totalling 1,800mg of magnesium compounds. It claims 384mg of elemental magnesium. Our lab found 385mg — so the magnesium content is accurate.
But here's the problem. Using standard elemental percentages: glycinate at 13% yields 130mg, malate at 15% yields 60mg, citrate at 16% yields 64mg. Total: 254mg. The label claims 384mg. That's a 130mg hole in the maths that can only be explained by roughly 217mg of magnesium oxide — the cheapest, least absorbable form — hidden in the formula.
The magnesium is real. It's just not what the label says it is.
Value Analysis
At £9.99 for 90 capsules (45 servings) and 58p per gram of elemental magnesium, this is one of the cheapest options available. But value isn't just about price — it's about what you're actually absorbing. If 130mg of the 385mg is coming from oxide with a 4% absorption rate, you're getting roughly 5mg of usable magnesium from that portion. The real absorbable dose could be significantly lower than the label suggests.
Effectiveness
The concept of a 3-in-1 blend is sound — glycinate for relaxation, malate for energy, citrate for general supplementation. If the product contained only these forms at the stated amounts, it would be a solid multi-form option. But the suspected oxide content undermines the entire premise. You're not getting a premium tri-form supplement; you're getting a partially-oxide product with a premium label.
Who Is This Best For?
If absolute price is your only consideration, Nutrition Geeks is cheap. But we cannot recommend a product where the label maths don't add up and the most likely explanation is undisclosed oxide. Consumers choosing this product for the glycinate benefits may be getting something quite different.
Where to Buy
Prices are approximate and may vary. As an affiliate, we may earn a commission from qualifying purchases at no extra cost to you. This does not influence our reviews or rankings of Nutrition Geeks Magnesium Glycinate 3-in-1.
Nutrition Geeks Magnesium Glycinate 3-in-1 FAQ
How did you calculate the 130mg elemental gap?
We used the standard elemental magnesium percentages for each form: glycinate at 13% (1,000mg = 130mg), malate at 15% (400mg = 60mg), citrate at 16% (400mg = 64mg). Total: 254mg. The label claims 384mg, and the lab confirmed 385mg. The 130mg difference can only be explained by approximately 217mg of undisclosed magnesium oxide (~60% elemental).
Is the magnesium in Nutrition Geeks 3-in-1 real?
Yes — the lab confirmed 385mg of elemental magnesium, matching the label claim of 384mg. The issue isn't the amount of magnesium; it's the form. The listed ingredients can only account for 254mg. The remaining 130mg appears to come from a form not declared on the label, most likely magnesium oxide.