| Weight | Standard Delivery for orders over £30 | Standard Delivery for orders under £30 | Express (Next working day when ordered before 12 noon) for orders over £100 | Express (Next working day when ordered before 12 noon) for orders under £100 |
|---|---|---|---|---|
| 0-149g | Free | £1.95 | Free | £5.95 |
| 150g-999g | Free | £2.95 | Free | £5.95 |
| 1000g-1999g | Free | £3.95 | Free | £5.95 |
| Over 2000g | Free | £5.95 | Free | £5.95 |
Vitamin B12 is a comes in 4 different forms; Methylcobalamin - this is the most active form in the human body, Cyanocobalamin - this synthetic version of vitamin B-12 is created in a lab, Hydroxocobalamin - Bacteria naturally creates this form of vitamin B-12, making it the main type found in most foods, and Adenosylcobalamin - although naturally occurring, it is the least stable of the four types of B-12 outside the human body and does not translate well into a tablet-based supplement.
Along with the other B vitamins, B12 helps to convert food consumed into fuel which is used to produce energy. It is also vital in the production of white blood cells which are key components in the immune system. A deficiency in this vitamin can cause tiredness and fatigue and in extreme examples has been linked to depression, this is due to B12’s ability to activate a substance called tetrahydrobiopterin (BH4), a compound which in turn helps to activate “feel good” neurotransmitters like serotonin and dopamine.
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