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Magnesium Bisglycinate (glycinate): price per 100 mg magnesium

We count the elemental magnesium a product provides, not the weight of the whole compound it comes in. If a label states the magnesium amount, we use it. If it only gives the compound's weight, we estimate using a published conversion factor and mark the figure “estimated”. If we cannot tell which the number means, the product is listed as unverified and is not ranked.

Conversion factor used when only the compound weight is given: bisglycinate 11.7%. How we chose these.

Prices last checked: 17 September 2026. Ranked purely by price per 100 mg magnesium — a comparison unit, not a recommendation. We may earn commission from these links; it never affects the order.

Product	Pack	Per serving	Per 100 mg magnesium	Per month	Lasts	Buy
1 Magnesium Glycinate 120 TabletsHealthspanships from — check delivery and duties	120 tablets · 120 servings	100 mg	£0.0749	£2.25	4 months	£8.99View at Healthspan
Show the working Servings: 120 ÷ 1 per serving = 120 In the pack: 120 × 100 mg = 12 g £8.99 ÷ 12 g × 100 mg = £0.0749 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “120 Tablets” amount per serving “providing Magnesium ; 100 mg ; 27% NRV” compound mass “Magnesium Glycinate ; 500 mg” Is this wrong? Tell us
2 Magnesium Bisglycinate TabletsBulkships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	180 tablets · 90 servings	200 mg	£0.0833	£2.50	6 months	£14.99View at Bulk
Show the working Servings: 180 ÷ 2 per serving = 90 In the pack: 90 × 200 mg = 18 g £14.99 ÷ 18 g × 100 mg = £0.0833 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “180 Tablets” units per serving “Per Serving (2 Tablets)” amount per serving “of which Magnesium ; 200 mg” compound mass “Magnesium Bisglycinate ; 1000 mg” Is this wrong? Tell us
3 Magnesium Bisglycinate TabletsBulkships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	60 tablets · 30 servings	200 mg	£0.0998	£3.00	2 months	£5.99View at Bulk
Show the working Servings: 60 ÷ 2 per serving = 30 In the pack: 30 × 200 mg = 6 g £5.99 ÷ 6 g × 100 mg = £0.0998 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “60 Tablets” units per serving “Per Serving (2 Tablets)” amount per serving “of which Magnesium ; 200 mg ; 53” compound mass “Magnesium Bisglycinate ; 1000 mg” Is this wrong? Tell us
4 Magnesium Glycinate 375mg 90 CapsulesHolland & Barrettships from — check delivery and duties	90 capsules · 90 servings	85 mg	£0.126	£3.78	3 months	£9.64View at Holland & Barrett
Show the working Servings: 90 ÷ 1 per serving = 90 In the pack: 90 × 85 mg = 7.65 g £9.64 ÷ 7.65 g × 100 mg = £0.126 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “90 Capsules” units per serving “Take 1 capsule per day” amount per serving “Elemental Magnesium ; 85mg” compound mass “Magnesium Bisglycinate ; 375mg” Is this wrong? Tell us
5 1000mg Magnesium Bisglycinate TabletsMyvitamins · Myproteinships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	90 tablets · 90 servings	112.5 mg	£0.178	£5.33	3 months	£17.99View at Myprotein
Show the working Servings: 90 ÷ 1 per serving = 90 In the pack: 90 × 112.5 mg = 10.1 g £17.99 ÷ 10.1 g × 100 mg = £0.178 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: units per serving “Consume 1 tablet, daily” servings stated “Contains 90 servings” pack units “90servings” amount per serving “of which Magnesium ; 112.5mg” compound mass “Magnesium Bisglycinate ; 1000.0mg” Is this wrong? Tell us

Nothing from UK-based sellers here yet. Tick the boxes under “Show” to include combination products or sellers shipping from abroad.

How we compare · All magnesium forms