The known dangers of taking vitamin supplements include all of the following except

Which of the following would be the poorest dietary source of vitamin C?

Which of these meals is lowest in vitamin C?

Which of the following characteristics is shared by vitamins B₆, B₁₂, C and folate?

Of the following foods, which would be the only source of vitamin B₁₂?

Biotin can be synthesised by

Pernicious anaemia results from a deficiency of

The coenzyme FAD is formed from what vitamin?

A low-protein diet in which corn is a principal food has been found to cause a deficiency of what vitamin?

Riboflavin is most easily destroyed when exposed to