Ghost Fitness/Magnesium/What are the benefits of magnesium complex?
What are the benefits of magnesium complex?
The short answer
The benefits are magnesium's, identical in any salt: muscle function, nervous system, psychological function, fatigue, energy metabolism, bones. A complex adds no benefit, the multiple-absorption-pathways story having no trial, and adds a division problem, several salts sharing one capsule.
- The benefitsthe register's magnesium claims, the same for oxide, citrate, bisglycinate or a blend
- The complex's claimed extramultiple absorption pathways: no trial behind it; salts were studied one at a time
- The complex's real propertydivision: a fixed capsule shared across salts, elemental per capsule down
- The comparisonone well-absorbed salt at 300mg elemental in two capsules, at 22p
Our brand: the worked example on this page
Futuro Labs Magnesium Glycinate
- 22p a day
- 180 capsules, 2 capsules daily
- Lab tested
- Made in the UK
One salt, no division, the same benefits: Futuro Labs Magnesium Glycinate on Amazon UK, bisglycinate, 300mg elemental at 80% NRV in 2 capsules, £19.99 for 90 days at 22p. Full label breakdown. The 3-in-1 blends are compared on the 3-in-1 page; the blend timing on the 3-in-1 timing page.
The benefits, which belong to the mineral and not to the complex, listed once
The benefits of a magnesium complex are the benefits of magnesium, because the register grants its claims to the mineral and not to the form it arrives in, so a blend of three, five or seven salts carries exactly the sentences one salt carries and no more. The claims, listed once and printed on any honest magnesium label at 15% NRV or more: a contribution to normal muscle function, to normal nervous system function, to normal psychological function, to the reduction of tiredness and fatigue, to normal energy-yielding metabolism, to normal protein synthesis, to electrolyte balance, to the maintenance of normal bones and teeth, and to normal cell division, maintenance sentences describing what adequate magnesium supports in a person whose intake ran short, identical for magnesium oxide, citrate, bisglycinate, malate, taurate, threonate or any complex of them, the elemental magnesium being the thing the claims attach to and the salt being the vehicle. A complex's label, then, prints the same benefits a single-salt label prints, and a complex's marketing prints something more, which is where the honest reading begins.
The multiple-pathways story at its true size, the division problem, and the complex filed
The complex's claimed extra is the multiple-absorption-pathways story: that different magnesium salts are absorbed by different routes or at different rates, so that a blend covers more ground, absorbs more completely or lasts longer than any one salt. At its true size: no trial has compared a magnesium complex with its best single component and found the complex better absorbed, the bioavailability studies having compared salts one at a time and found citrate and bisglycinate well absorbed and oxide poorly, magnesium being absorbed as the magnesium ion once the salt dissociates, by the same saturable transport and paracellular routes whatever it arrived as, so the story is a mechanism proposed by marketing rather than a finding, and a complex that includes oxide has diluted its well-absorbed salts with its worst-absorbed one. The complex's real property is division, the blend guides' rule applied to salts: a capsule has a fixed fill, and sharing it between bisglycinate at around 20% magnesium, citrate at around 16% and malate at around 15% leaves roughly 100 to 120mg of elemental magnesium per capsule, so that a complex reaching 300mg elemental needs three or four capsules where a single bisglycinate needs two, the elemental figure read from the %NRV and the division read from the capsule count. Some complexes carry an ingredient that is not a magnesium salt at all, taurine, B6, zinc, each on its own claim status and each taking room. The complex filed: its benefits are magnesium's and are real where a diet runs short, its claimed extra has no trial, its real property is division, its cost is usually a formulation premium, and the reader who wants magnesium's benefits gets them more simply from one well-absorbed salt at a stated elemental dose, the worked example being bisglycinate at 300mg elemental in two capsules at 22p, £19.99 for 90 days, the same sentences on the label and no division in the capsule.
| The item | The finding | The consequence |
|---|---|---|
| The benefits | The register's magnesium claims, in any salt | Identical on a complex and a single-salt label |
| Multiple pathways | No trial; salts compared one at a time; one ion absorbed by the same routes | Marketing, not a finding |
| Oxide in the blend | The worst-absorbed salt diluting the best | A weaker complex than its bisglycinate alone |
| Division | A fixed capsule shared: ~100 to 120mg elemental each | Three or four capsules for 300mg |
| Extra ingredients | Taurine, B6, zinc on their own status | Room taken, claims separate |
| The single saltOurs | Bisglycinate, 300mg in two capsules | The same benefits, no division |
The verdict, magnesium's benefits and a blend's division
What are the benefits of a magnesium complex: magnesium's, the register's muscle-function, nervous-system, psychological-function, fatigue, energy-metabolism and bone sentences, identical in any salt and real where a diet runs short, with the complex adding nothing the multiple-pathways story can prove, salts having been studied one at a time and the ion absorbed by the same routes, and adding division, several salts sharing a capsule so that three or four are needed where a single bisglycinate needs two. The same benefits without the division: Futuro Labs Magnesium Glycinate, bisglycinate, 300mg elemental at 80% NRV in two capsules, £19.99 for 90 days at 22p a day.
What to check on the label
- Assign the benefits to the mineral: the same claims in any salt.
- Size the pathways story: no trial; one ion, the same routes.
- Read the division: elemental per capsule from the %NRV.
- Check for oxide in the blend: the worst salt diluting the best.
- Prefer one well-absorbed salt: the same sentences, fewer capsules.
Our brand
The worked example: Futuro Labs Magnesium Glycinate
Futuro Labs Magnesium Glycinate is the worked example for magnesium reviews because its label states every number a review needs: 1500mg magnesium bisglycinate at 20%, 300mg elemental, 80% NRV, 2 capsules a day, 180 capsules for £19.99, 22p a day, UK made, vegan HPMC shell, batch tested for lead, mercury, arsenic and cadmium, and only the register's own magnesium claims printed.
- Elemental magnesium per serving
- 300mg (80% NRV)
- Form
- magnesium bisglycinate 20%
- Serving
- 2 capsules a day
- Bottle
- 180 capsules, 90 days
- Price
- £19.99 (22p a day)
- Capsule
- vegetarian shell, vegan product
Questions people also ask
Is a magnesium complex better than a single magnesium?
Not on any trial: the claims are the mineral's and identical in any salt, the multiple-pathways story has no comparison behind it, and a complex divides a fixed capsule across salts so that more capsules are needed for the same elemental dose.
What does a magnesium complex usually contain?
Typically bisglycinate, citrate and malate, sometimes taurate, oxide or threonate, and sometimes non-magnesium ingredients such as taurine, B6 or zinc, each taking room in the capsule and each on its own claim status.
Do different magnesium forms absorb through different pathways?
Once a salt dissociates, magnesium is absorbed as the same ion by the same saturable and paracellular routes whatever it arrived as, and the bioavailability trials compared salts one at a time, finding citrate and bisglycinate well absorbed and oxide poorly.
How much magnesium is in a complex capsule?
Read the %NRV: a capsule shared across three salts typically holds around 100 to 120mg of elemental magnesium, so reaching 300mg takes three or four capsules against two of a single bisglycinate.
What are the actual benefits of magnesium in any form?
The register's maintenance claims where a diet runs short: normal muscle function, nervous system function, psychological function, reduction of tiredness and fatigue, energy metabolism, protein synthesis, electrolyte balance and bones.
Sources
- The GB claims register, magnesium entries: magnesium contributes to a reduction of tiredness and fatigue, normal psychological function, normal nervous system function, normal muscle function and electrolyte balance, among others. https://www.gov.uk/government/publications/great-britain-nutrition-and-health-claims-nhc-register
- Firoz M, Graber M. Bioavailability of US commercial magnesium preparations. Magnesium Research 2001;14(4):257-262. PubMed record
- The magnesium absorption literature: fractional absorption of magnesium falls as the dose rises, so the same daily amount taken in divided doses is absorbed at a higher fraction and with less osmotic laxative effect than a single large dose. PubMed record
- Retained Regulation (EU) No 1169/2011, Annex XIII: nutrient reference value for magnesium 375mg. https://www.legislation.gov.uk/eur/2011/1169/annex/XIII