Need some advice Re: Chromium

[Calluna]

Hey everyone,
I know there's a sticky about natural remedies, but this didn't seem to quite fit so I'm posting a new thread.

I went to the naturopath because I've had almost constant headaches for the last few weeks (my usual naturopath wasn't there and I don't know if i trust this guy). He said it was probably due to low blood sugar as it usually goes away a bit when I eat, and comes back after an hour or so.
He gave me something called "Chromium Plus" to take but said to take 3 p/day instead of the 1 p/day suggested on the bottle and he said it was safe to take during pregnancy, I just don't trust him enough to take it.
If it is safe to take I want to start ASAP as these headaches are driving me nuts.

So, my questions are:
Does anybody know if it is safe to take or not?
Does the dosage sound right?
Has anyone used it to stabilise blood sugar before?

Any info you have will be greatly appreciated.
TIA

ETA The ingredients in the tablets are:
2000mcg - Chromium Polynicotinate
250mcg - Equiv. to Chromium
200mg - Alpha Lipoic Acid
100mg - Inositol
53mg - Zinc Glycinate
15mg - Equiv. to zinc
100mg - Vanadium Aminoate
1mg - Equiv. to Vanadium