Compare every Vitamin B12 product across UK retailers on Suppio, ranked by true value - price per serving, not pack size. Prices refreshed daily.
Vitamin B12, also known as cobalamin, is a water soluble vitamin. This means it dissolves in water and the body does not store large amounts of it for long periods. It is an essential nutrient that the body cannot make on its own.
It is primarily used to support the nervous system and the creation of red blood cells. It is especially relevant for vegans and vegetarians because B12 is naturally found almost exclusively in animal products.
While Vitamin B12 is a single, specific nutrient, a B Complex is a blend containing several different B vitamins.
| Feature | Vitamin B12 | Vitamin B Complex |
|---|---|---|
| Composition | Only cobalamin | Multiple B vitamins (e.g., B1, B2, B6, B12) |
| Purpose | Targeted support for B12 deficiency | General support for energy and metabolism |
| Specificity | High dose of one nutrient | Lower, balanced doses of many nutrients |
Because B12 is not found in plants, it is produced commercially using bacteria. These bacteria are grown in large fermentation tanks where they naturally produce the vitamin. The B12 is then extracted from the bacterial broth, purified, and dried into a powder to be put into tablets or capsules.
This supplement is generally mid range in price. This is because the industrial fermentation process required to grow the specific bacteria is more complex and costly than the simple chemical synthesis used for some other basic vitamins.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Suppio matches identical products across UK retailers by barcode, then ranks by price per active dose rather than sticker price. Value rankings only ever include listings Suppio has independently verified against the live retailer page - unverified data is shown on each product’s own page but excluded from ranking.
Prices across our retailer network are refreshed at least daily.
Related: Single Serving, Vitamin B Complex, Liquid / Drops, Energy Drink, Sugar-Free