Compare every Magnesium Glycinate product across UK retailers on Suppio, ranked by true value - price per active dose, not pack size. Prices refreshed daily.
Chelated magnesium with superior absorption and minimal laxative effect
We rank Magnesium Glycinate by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Magnesium Glycinate is a chelated form of magnesium. Chelated means the mineral is bonded to glycine, which is an amino acid (a building block of protein), to help the body absorb it more easily.
It is used to increase magnesium levels in the body. It is preferred over other forms because it has superior absorption and a minimal laxative effect, meaning it is less likely to cause loose stools.
To make this supplement, manufacturers combine magnesium with glycine in a controlled chemical reaction. This process creates a stable bond between the two, resulting in a powder that is then put into capsules or pressed into tablets.
This ingredient is generally mid-range in price. This is because the chelation process used to bond the mineral to the amino acid is more complex and costly than the simple manufacturing used for basic magnesium salts.
| Form | What it is | Why chosen | Does it actually differ? |
|---|---|---|---|
| Magnesium Glycinate | A form of magnesium supplement. | It is noted for having good bioavailability, meaning the body can absorb it well. | It is listed as having good bioavailability compared to forms like magnesium oxide. |
| Magnesium Citrate | A form of magnesium supplement. | It is one of the most studied forms and consistently shows good bioavailability. | It is highlighted for its consistent absorption rates. |
| Magnesium Oxide | A form of magnesium supplement. | Generally not recommended for increasing magnesium levels due to poor absorption. | It has extremely poor absorption, with one human study showing only 4 percent absorption, and it carries a higher risk of diarrhea and intestinal discomfort. |
Verdict: It is worth seeking out forms like magnesium glycinate or citrate over magnesium oxide because they are much better absorbed by the body and less likely to cause stomach upset.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Chelated magnesium with superior absorption and minimal laxative effect
We rank Magnesium Glycinate by price per gram of active ingredient - not by pack size - so a bigger tub with a worse price per dose can't outrank a smaller one that's actually cheaper.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.