Start a magnesium comparison with the amount of magnesium declared per daily portion, then check which compounds supply it. Glycinate, bisglycinate, citrate and oxide are ingredient names; the name alone does not tell you the magnesium amount, the complete formula or how a particular product will suit you. Compare the exact pack and its directions before choosing.
Compare available products
Portion prices are calculated from the net contents. Portion sizes differ between products; this is not a dosing recommendation. Read the full ingredients and directions on the product label.
Price per 100 mg magnesium = portion price ÷ declared magnesium per portion (mg) × 100.
 Jarrow Formulas
Magnesium Glycinate - 90 vcaps
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 NOW Foods
Magnesium Glycinate - 180 tablets
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 Natrol
High Absorption Magnesium Glycinate, 240mg - 60 caps
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 Swanson
Albion Magnesium Glycinate Powder - 150 grams
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 Life Extension
Magnesium Glycinate, 105mg - 90 vcaps
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|---|---|---|---|---|---|
| Pack size | 90 capsules | 180 tablets | 60 capsules | 150 g | 90 capsules |
| Main ingredients | Magnesium bisglycinate chelate | Magnesium bisglycinate chelate | Magnesium bisglycinate chelate | Magnesium bisglycinate chelate | Magnesium bisglycinate chelate |
| Label portion | 3 capsules | 2 tablets | 2 capsules | 5 g | 1 capsules |
| Declared magnesium per label portion | 360 mg | 200 mg | 240 mg | 400 mg | 105 mg |
| Pack price | €29.99 | €30.99 | €26.99 | €30.99 | €23.99 |
| Price per portion | €1.00 | €0.34 | €0.90 | €1.03 | €0.27 |
| Price per 100 mg magnesium | €0.28 | €0.17 | €0.37 | €0.26 | €0.25 |
| Allergen information | See the manufacturer’s full allergen statement. | See the manufacturer’s full allergen statement. | See the manufacturer’s full allergen statement. | See the manufacturer’s full allergen statement. | See the manufacturer’s full allergen statement. |
| Certifications | TRAACS® GMP NSF Certified | — | GMP USP Verified | TRAACS® GMP | — |
| Label information | Label information | Label information | Label information | Label information | Label information |
Authorised EU Health Claim (HC-092 • Reg. (EU) 432/2012)
“Magnesium contributes to normal muscle function”
Conditions of use: The claim may be used only for food which is at least a source of magnesium as referred to in the claim SOURCE OF [NAME OF VITAMIN/S] AND/OR [NAME OF MINERAL/S] as listed in the Annex to Regulation (EC) No 1924/2006.
A varied, balanced diet and a healthy lifestyle are important.
Prices include VAT for Ireland. Courier delivery: €6.99; free from €65.00. Estimated delivery: 2–4 working days.
Product facts checked: 2026-10-28.
What should I check about the magnesium form?
Read both the nutrient declaration and the ingredients list. A product may use magnesium bisglycinate alone or combine it with other magnesium sources. Capsules can also contain fillers and a capsule shell; powders may contain acids or flavourings. Compare those declared ingredients rather than assuming that every product with glycinate in its name has the same composition.
Is compound weight the same as magnesium content?
No. A stated mass of magnesium bisglycinate is the mass of the compound. Use the separately declared magnesium amount for your comparison. Check whether the table refers to one capsule, several capsules or the whole daily portion. Do not estimate magnesium content from a generic percentage when the exact label does not provide it.
How can I compare the price?
Divide the pack price by the number of label portions. For example, a 90-capsule pack with a three-capsule portion contains 30 portions. If that portion declares 200 mg magnesium, the pack contains 6,000 mg declared magnesium. At an illustrative price of €18, that is €0.60 per portion or €0.30 per 100 mg. This is arithmetic, not an intake recommendation.
What about timing and suitability?
Follow the particular product's daily portion, mixing instructions and warnings. The ingredient name does not establish a universal bedtime schedule or guarantee digestive comfort or a sleep effect. Check other supplements for overlapping magnesium and ask a pharmacist or qualified healthcare professional about suitability if you take medication or have a medical condition.
Browse the range and compare the exact product labels. How to read a supplement label.