I am on a restricive diet. I know that there are things that I miss out oon so I take the very high potency stuff and supllement that with extra b complex, c , and zinc.

If you have a good balanced diet you probably don't need extra, but with b complex and c what your body doesn't need it doesnt use, so u ca't OD on it.

If you know you have a food deficiency somehere, then compensate. Not eating eonough fruit tale C, carrots, take beta carotine (it convert to A), otehr veggies (b complex), milk, take D.

I doubt that the brand make much difference, look at the potency and remember that they come up eiyh the dosages based on an assumed 150 lb body weight. I'll bet you weigh a tad more, eh?