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Magnesium Blends and other forms: 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.

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 3 in 1Bulkships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	180 capsules · 90 servings	384 mg	£0.0492	£1.47	11 months	£16.99View at Bulk
Show the working Servings: 180 ÷ 2 per serving = 90 In the pack: 90 × 384 mg = 34.6 g £16.99 ÷ 34.6 g × 100 mg = £0.0492 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “180 Capsules” units per serving “Per Serving (2 capsules)” amount per serving “of which Magnesium ; 384 mg” compound mass “Magnesium Malate ; 400 mg” Is this wrong? Tell us
2 Magnesium Glycinate 3 in 1Bulkships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	90 capsules · 45 servings	384 mg	£0.0520	£1.56	6 months	£8.99View at Bulk
Show the working Servings: 90 ÷ 2 per serving = 45 In the pack: 45 × 384 mg = 17.3 g £8.99 ÷ 17.3 g × 100 mg = £0.0520 per 100 mg magnesium Amount per serving: stated on the label. From the retailer's listing: pack units “90 Capsules” units per serving “Per Serving (2 capsules)” amount per serving “of which Magnesium ; 384 mg ; 102” Magnesium Bisglycinate “Magnesium Bisglycinate ; 1000 mg” Magnesium Citrate “Magnesium Citrate ; 414 mg” Magnesium Malate “Magnesium Malate ; 400 mg” Is this wrong? Tell us
+ Zinc & Magnesium CapsulesMyvitamins · MyproteinCombination: price counts the magnesium onlyalso contains zinc, vitamin b6, copper glycinateships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	270 capsules · 270 servings	150 mg	£0.0518	£1.55	1.1 years	£20.99View at Myprotein
Show the working Servings: 270 ÷ 1 per serving = 270 In the pack: 270 × 150 mg = 40.5 g £20.99 ÷ 40.5 g × 100 mg = £0.0518 per 100 mg magnesium Amount per serving: stated on the label. Also contains: zinc, vitamin b6, copper glycinate. The price counts the magnesium only. From the retailer's listing: pack units “270Capsules” units per serving “Consume 1 capsule daily” amount per serving “Magnesium ; 40 ; 150mg” Is this wrong? Tell us
+ Zinc & Magnesium CapsulesMyvitamins · MyproteinCombination: price counts the magnesium onlyalso contains zinc, vitamin b6, copper glycinateships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	90 capsules · 90 servings	150 mg	£0.0703	£2.11	4 months	£9.49View at Myprotein
Show the working Servings: 90 ÷ 1 per serving = 90 In the pack: 90 × 150 mg = 13.5 g £9.49 ÷ 13.5 g × 100 mg = £0.0703 per 100 mg magnesium Amount per serving: stated on the label. Also contains: zinc, vitamin b6, copper glycinate. The price counts the magnesium only. From the retailer's listing: pack units “90Capsules” units per serving “Consume 1 capsule daily” amount per serving “Magnesium ; 40 ; 150mg” Is this wrong? Tell us
+ Opti-Magnesium 90 TabletsHealthspanCombination: price counts the magnesium onlyalso contains vitamin d3, vitamin b6 (pyridoxine 5 phosphate), inulinships from — check delivery and duties	90 tablets · 45 servings	375 mg	£0.0948	£2.84	6 months	£15.99View at Healthspan
Show the working Servings: 90 ÷ 2 per serving = 45 In the pack: 45 × 375 mg = 16.9 g £15.99 ÷ 16.9 g × 100 mg = £0.0948 per 100 mg magnesium Amount per serving: stated on the label. Also contains: vitamin d3, vitamin b6 (pyridoxine 5 phosphate), inulin. The price counts the magnesium only. From the retailer's listing: units per serving “Swallow 2 tablets daily with water” pack units “90 Tablets” amount per serving “Triple-Source Magnesium (Magnesium Glycinate [20%], Magnesium Citrate and Magnesium Malate) providing Total Elemental Magnesium ; 187.5 mg” Is this wrong? Tell us
+ Zinc & Magnesium CapsulesMyvitamins · MyproteinCombination: price counts the magnesium onlyalso contains zinc, vitamin b6, copper glycinateships from — check delivery and dutiesclaimed: veganclaimed: vegetarian	30 capsules · 30 servings	150 mg	£0.0998	£2.99	45 days	£4.49View at Myprotein
Show the working Servings: 30 ÷ 1 per serving = 30 In the pack: 30 × 150 mg = 4.5 g £4.49 ÷ 4.5 g × 100 mg = £0.0998 per 100 mg magnesium Amount per serving: stated on the label. Also contains: zinc, vitamin b6, copper glycinate. The price counts the magnesium only. From the retailer's listing: pack units “30Capsules” units per serving “Consume 1 capsule daily” servings stated “30Capsules” amount per serving “Magnesium ; 40 ; 150mg” Is this wrong? Tell us
+ Magnesium Glycinate 3-in-1 Capsules \| 2398mgMyproteinCombination: price counts the magnesium onlyalso contains vitamin d3, vitamin b6ships from — check delivery and duties	90 capsules · 30 servings	250 mg	£0.120	£3.60	2 months	£8.99View at Myprotein
Show the working Servings: 90 ÷ 3 per serving = 30 In the pack: 30 × 250 mg = 7.5 g £8.99 ÷ 7.5 g × 100 mg = £0.120 per 100 mg magnesium Amount per serving: stated on the label. Also contains: vitamin d3, vitamin b6. The price counts the magnesium only. From the retailer's listing: pack units “90CAPSULES” units per serving “3 Capsules” servings stated “Servings Per Container: \| 30” amount per serving “Total Magnesium ; 250mg (67%*)” components “provided from Malate (14.7% Mg) ; 340mg” 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