I get so confused about vitamins!!

I am taking GNC Ultra Mega Green
GNC Multi Mega Minerals (4 calcium)
GNC Big 50 (B-complex)
Flax Oil, meal or seeds
Aspirin

I am taking these about 5 times a week, I just get so busy that I forget.

I would be interested in anyones opion on these, as I am starting to run low and may switch.

thanks!!!