DD (9) has been very tired for a while, very low energy, very pale with dark circles under her eyes, sensitive to cold and has had headaches and a low-level sore throat for weeks.
She's had blood tests at GP and is generally in terms of iron, blood count, thyroid etc but has very high B12 (over 2000 - not measured as off the scale).
GP said there's no problem with high B12 and it's prob caused by the kids multivitamin that she takes each day. I've since Googled and can see that high B12 can be a significant problem - can a multivit designed for kids (gives 120% RDA for B12) really cause such a high level?