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Vitamin B12 Hydroxocobalamin

Also called B12, cobalamin, methylcobalamin and 3 more

cyanocobalamin, adenosylcobalamin, hydroxocobalamin.

The best price per 1 mg and per month across 1 UK retailer, and where to buy it cheapest. A unit for comparing, not advice.

Comparing vitamin B12

Labels give cobalamin in micrograms, and some in milligrams: 1 mg is 1,000 mcg. We put every product in one unit before pricing it. Vitamin B12 comes as methylcobalamin, cyanocobalamin, hydroxocobalamin and form not stated, and each form has its own table, because someone buying one would not usually take another as a like-for-like substitute. Products that combine vitamin B12 with other ingredients are listed separately, because their price buys more than cobalamin. 1 mg is our unit for comparing prices, not a dose to take: the label’s directions and a pharmacist decide that.

Prices last checked: 20 October 2026. Ranked purely by price per 1 mg — a comparison unit, not a recommendation. We earn commission when you buy through these links; it never affects the order.

Vitamin B12, Hydroxocobalamin: products ranked by price per 1 mg
Rank	Product	Per 1 mg	Per month	Lasts	Buy	How it is worked out
1	Cheapest per doseHydroxo B12 - 60 lozenges · 60 tablets · 60 servings · 2 mg a servingDetails and price history Add to my stack	14p	£4.25	4 months	£16.99View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99 AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.	Show the working Servings: 60 ÷ 1 per serving = 60 In the pack: 60 × 2 mg = 120 mg £16.99 ÷ 120 mg × 1 mg = 14.2p per 1 mg Amount per serving: stated on the label. What the retailer's listing says pack units “60 lozenges” servings stated “Servings Per Container: 60” units per serving “Serving Size: 1 Lozenge” amount per serving “Vitamin B12 (as Hydroxocobalamin) ; 2000 mcg” Is this wrong? Tell us
2	Hydroxo B12 with Folinic Acid - 60 lozenges · 60 tablets · 60 servings · 1 mg a servingDetails and price history Add to my stackalso contains vitamin b9	30p	£8.99	2 months	£17.98View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99 AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.	Show the working Servings: 60 ÷ 1 per serving = 60 In the pack: 60 × 1 mg = 60 mg £17.98 ÷ 60 mg × 1 mg = 30p per 1 mg Amount per serving: stated on the label. Also contains: vitamin b9. The price counts the vitamin b12 only. What the retailer's listing says pack units “60 lozenges” servings stated “Servings Per Container: 60” units per serving “Serving Size: 1 Tablet” amount per serving “(Hydroxocobalamin Acetate) ; 1000 mcg” Is this wrong? Tell us
3	Vitamin B12 · 30 capsules · 30 servings · 500 µg a servingDetails and price history Add to my stackclaimed: veganclaimed: vegetarian	99p	£29.78	15 days	£14.89View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99 AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.	Show the working Servings: 30 ÷ 1 per serving = 30 In the pack: 30 × 500 µg = 15 mg £14.89 ÷ 15 mg × 1 mg = 99.3p per 1 mg Amount per serving: stated on the label. What the retailer's listing says pack units “30 caps” units per serving “per daily intake: 1 capsule” amount per serving “Vitamin B12 ; 500mcg ; 20000” Is this wrong? Tell us
+	B Complex · 90 capsules · 90 servings · 50 µg a servingDetails and price history Add to my stackCombination: price counts the vitamin b12 onlyalso contains magnesium, vitamin b6, vitamin c…claimed: vegan	£6.18	£185.27	5 days	£27.79View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99 AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.	Show the working Servings: 90 ÷ 1 per serving = 90 In the pack: 90 × 50 µg = 4.5 mg £27.79 ÷ 4.5 mg × 1 mg = £6.18 per 1 mg Amount per serving: stated on the label. Also contains: magnesium, vitamin b6, vitamin c, choline, vitamin b1, vitamin b5, vitamin b2, niacin, folic acid, biotin, inositol, l-glycine, paba. The price counts the vitamin b12 only. What the retailer's listing says pack units “90 caps” units per serving “per daily intake: 1 capsule” amount per serving “Vitamin B12 ; 50mcg” Is this wrong? Tell us
+	B Complex · 30 capsules · 30 servings · 50 µg a servingDetails and price history Add to my stackCombination: price counts the vitamin b12 onlyalso contains magnesium, vitamin b6, vitamin c…claimed: vegan	£7.13	£213.80	2 days	£10.69View at Healf (opens in a new tab)Free delivery over £50.00, otherwise £3.99 AmazonFind it on Amazon (opens in a new tab)A search, not a matched product. Price not compared.	Show the working Servings: 30 ÷ 1 per serving = 30 In the pack: 30 × 50 µg = 1.5 mg £10.69 ÷ 1.5 mg × 1 mg = £7.13 per 1 mg Amount per serving: stated on the label. Also contains: magnesium, vitamin b6, vitamin c, choline, vitamin b1, vitamin b5, vitamin b2, niacin, folic acid, biotin, inositol, l-glycine, paba. The price counts the vitamin b12 only. What the retailer's listing says pack units “30 caps” units per serving “per daily intake: 1 capsule” amount per serving “Vitamin B12 ; 50mcg” Is this wrong? Tell us