Only one I take daily is a 500mg vitamin B-12. Seems everyone on my mom's side had issues with being deficient in it. Doc told me that some folks just don't absorb vitamin B well. Years ago my mom got real low and they had to give her a shot to get it back up to normal. Long as I take a B-12 tablet regularly I'm O.K.. If you are low it will show up in a routine blood test. Also have some senior multivitamins that I take almost daily or at least 3 or 4 times a week.
