Hmm, interesting question.. My "guess" would be that you can take them together. Multivitamins have calcium, magnesium, and vitamin D all together. So logically, you can take them at the same time.
I take my calcium, B 12, and Vit D all together. Some of my calcium also contains magnesium. I think you are fine doing them all together.
Trish
thanks!
i'm going to continue to take them together.
there aren't enough hours in the day to space out all of my supplements & my synthroid.
:)