High Twelve pairs B12 with the rest of the B group rather than selling it alone, which is the sensible way round – the B vitamins work together. It comes in 30 and 90 capsule sizes.
B12 matters particularly if you eat little or no animal food, since that is where it comes from. It contributes to normal red blood cell formation as well as to the reduction of tiredness and fatigue.
Iron contributes to the reduction of tiredness and fatigue, and being genuinely low in it is a common enough reason for feeling wrung out. But it is not a mineral to take speculatively – too much is harmful and the excess is not simply passed.
If you think iron might be your problem, ask your GP for a blood test rather than working it out from how you feel. That is a free, definitive answer instead of an expensive guess. Keep iron out of reach of children.
Persistent tiredness has a long list of causes and most of them are not a vitamin deficiency. Sleep, stress, thyroid function and a dozen other things come first, and a supplement cannot address any of them.
If you have been tired for weeks and cannot account for it, see your GP. That is the single most useful thing on this page.
FAQ
Should I take iron for tiredness?
Not without knowing you are low. Ask your GP for a blood test – too much iron is harmful and it is not passed like the water-soluble vitamins.
Why is B12 sold with a B complex?
The B vitamins work together, so a complex is generally the more sensible approach than a single vitamin alone.
Who is most likely to be short of B12?
People eating little or no animal food, since that is where dietary B12 comes from.
When should I see a GP about tiredness?
If it has gone on for weeks and you cannot account for it. Most causes of persistent tiredness are not a vitamin deficiency.
