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Vitamin B12 Cyanocobalamin: price per 1 mg

We count the amount of cobalamin stated on the label, converting between units (for example micrograms and IU) so every product is on the same scale.

Prices last checked: 17 September 2026. Ranked purely by price per 1 mg — a comparison unit, not a recommendation. We may earn commission from these links; it never affects the order.

Product	Pack	Per serving	Per 1 mg	Per month	Lasts	Buy
1 Max Strength Slow Release Vitamin B12 1000ug 120 TabletsHolland & Barrettships from — check delivery and duties	120 tablets · 120 servings	1 mg	£0.0696	£2.09	4 months	£8.35View at Holland & Barrett
Show the working Servings: 120 ÷ 1 per serving = 120 In the pack: 120 × 1 mg = 120 mg £8.35 ÷ 120 mg × 1 mg = £0.0696 per 1 mg Amount per serving: stated on the label. From the retailer's listing: pack units “120 Tablets” units per serving “Each tablet contains” amount per serving “Vitamin B12 ; 1000ug 40,000%” form raw “Vitamin B12 (Cyanocobalamin)” Is this wrong? Tell us
2 Vitamin B12 + Cyanacobalamin 500ug 120 TabletsHolland & Barrettships from — check delivery and duties	120 tablets · 120 servings	500 µg	£0.0875	£2.63	2 months	£5.25View at Holland & Barrett
Show the working Servings: 120 ÷ 1 per serving = 120 In the pack: 120 × 500 µg = 60 mg £5.25 ÷ 60 mg × 1 mg = £0.0875 per 1 mg Amount per serving: stated on the label. From the retailer's listing: pack units “120 Tablets” units per serving “Take 1 Tablet/tablets per day” amount per serving “Vitamin B12 ; 500µg” Is this wrong? Tell us
+ Magnesium 375mg 90 TabletsHealthspanCombination: price counts the vitamin b12 onlyalso contains magnesium, vitamin c, vitamin b1…ships from — check delivery and duties	90 tablets · 90 servings	0.63 µg	£230.93	£6928.00	0 days	£12.99View at Healthspan
Show the working Servings: 90 ÷ 1 per serving = 90 In the pack: 90 × 0.63 µg = 56.3 µg £12.99 ÷ 56.3 µg × 1 mg = £230.93 per 1 mg Amount per serving: stated on the label. Also contains: magnesium, vitamin c, vitamin b1, vitamin b2, niacin, pantothenic acid, vitamin b6, folic acid, biotin. The price counts the vitamin b12 only. From the retailer's listing: pack units “90 Tablets” units per serving “Swallow 1 tablet daily” servings stated “90 Tablets” amount per serving “Vitamin B12 ; 0.625 µg ; 25% NRV” 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 vitamin b12 forms