Vitamin B12 supplements compared against the EU Nutrient Reference Value of 2.5 micrograms a day. No tolerable upper limit is established for B12, so no product here is flagged for exceeding one.
The caveat this category needs stating up front is the opposite of the magnesium one: dose is not the interesting axis. Nineteen of the twenty products carry between 400 and 200,000 times the reference value, so a dose comparison bands almost the whole category identically and tells a shopper nothing. What actually separates these products is the form (methylcobalamin against the cheaper synthetic cyanocobalamin), the delivery format, and how honestly the pack states its own numbers — a gummy and a tablet from the same brand carry the same 1,000 µg at a sevenfold difference in price per day, and the price spread across identical 1,000 µg methylcobalamin products runs from under 2p a day to 50p.
| Product | At full dose | Vitamin B12 per day | Band | Cost per full dose | Days supply |
|---|---|---|---|---|---|
| Vitamin B12 2000µg Horbäach |
1 of 1 | 2000 mcg | Full dose | £0.000 | 250 days |
| Vitamin B12 Methylcobalamin 1000µg WeightWorld |
1 of 1 | 1000 mcg | Full dose | £0.000 | 450 days |
| Vitamin B12 1100mcg Zipvit |
1 of 1 | 1100 mcg | Full dose | £0.000 | 360 days |
| Vitamin B12 1000µg Nutravita |
1 of 1 | 1000 mcg | Full dose | £0.000 | 365 days |
| B12 Dual Power 1000µg Nutrition Geeks |
1 of 1 | 1000 mcg | Full dose | £0.000 | 365 days |
| Liquid Vitamin B12 5000µg Drops ALPHA01 |
1 of 1 | 5000 mcg | Full dose | £0.000 | 60 days |
| Advanced Vitamin B12 1500µg with Folic Acid & Black Pepper yrhealth |
2 of 2 | 1500 mcg | Full dose | £0.000 | 180 days |
| Vitamin B12 High Strength 1000µg New Leaf Products |
1 of 1 | 1000 mcg | Full dose | £0.000 | 120 days |
| Vitamin B12 1000µg Sublingual Natures Aid |
1 of 1 | 1000 mcg | Full dose | £0.000 | 90 days |
| Vitamin B12 (Methylcobalamin) 1000µg Nature's Best |
1 of 1 | 1000 mcg | Full dose | £0.000 | 180 days |
| Vitamin B12 1000µg Healthspan |
1 of 1 | 1000 mcg | Full dose | £0.000 | 240 days |
| High Strength Slow Release Vitamin B12 1000µg Holland & Barrett |
1 of 1 | 1000 mcg | Full dose | £0.000 | 120 days |
| Boost B12 Daily Oral Spray 1200µg BetterYou |
2 of 2 | 1200 mcg | Full dose | £0.000 | 48 days |
| Vitamin B12 Gummies 1000µg WeightWorld |
1 of 1 | 1000 mcg | Full dose | £0.000 | 120 days |
| Vitamin B12 Methylcobalamin 1000µg INNOPURE |
1 of 1 | 1000 mcg | Full dose | £0.000 | 120 days |
| Daily Vitamin B12 2000µg DR.VEGAN |
1 of 2 | 2000 mcg | Full dose | £0.000 | 30 days |
| B12 (Methylcobalamin) 1000µg Pure Encapsulations |
1 of 1 | 1000 mcg | Full dose | £0.001 | 60 days |
| Puro Vitamin B12 1000µg Purolabs |
1 of 1 | 1000 mcg | Full dose | £0.001 | 60 days |
| Vitamin B12 100µg Solgar |
1 of 1 | 100 mcg | Full dose | £0.002 | 100 days |
| Organic Vit B12 Whole-Food from Shiitake Earthier |
1 of 1 | 100 mcg | Full dose | £0.012 | 30 days |
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 2000µg (80000% NRV) typically per daily dose of two tablets | 2000 mcg | 2.5 mcg | 800× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000 %NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1100mcg (44000 %NRV) | 1100 mcg | 2.5 mcg | 440× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000%) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000% NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
The label also prints these lines. They describe how the amounts above are made up — a salt weight, or a breakdown of a total — so they are not counted again as ingredients of their own.
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 5,000µg (200000% NRV) | 5000 mcg | 2.5 mcg | 2000× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 200µg (100%) | 200 mcg | 200 mcg | 1× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
| 1500µg (60000%) | 1500 mcg | 2.5 mcg | 600× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000% RI) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000 %NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1,000µg (40000 %NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1200 µg (micrograms) | 1200 mcg | 2.5 mcg | 480× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
| 40 µg | 40 mcg | 40 mcg | 1× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
The label also prints these lines. They describe how the amounts above are made up — a salt weight, or a breakdown of a total — so they are not counted again as ingredients of their own.
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000 %NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000mcg (40000%) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 2000ug | 2000 mcg | 2.5 mcg | 800× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
| 250mg | 250 mg | Not stated | — | No reference | |
No published reference dose was found for this ingredient, so it cannot be compared.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1,000 µg (40000% NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 1000µg (40000% NRV) | 1000 mcg | 2.5 mcg | 400× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 100 µg | 100 mcg | 2.5 mcg | 40× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
Label captured 7 Aug 2026 (version 1).
| Ingredient | On the label | Per day | Reference | Ratio | Band |
|---|---|---|---|---|---|
| 50µg (2000% EU NRV) per capsule under a 2 Capsule serving size | 100 mcg | 2.5 mcg | 40× | Full dose | |
The daily amount meets or exceeds the published reference dose.
| |||||
The label does not state how many servings a day to take. These figures assume one.
Label captured 7 Aug 2026 (version 1).