I get the one withOut iron though you need to check with your physician to see if you have enough iron in your blood or not. Too much iron can actually cause damage to the liver, however, those with anemia may be prescribed or recommended a certain iron supplement. (I have one formula with iron for my 'monthly friend' :) Twinlab can be found at stores such as Whole Foods, Genuardi's and/or Vitamin Shoppe (usually cheaper there). And a pharmacist once told me to take vitamins After food to help make sure that they stomach is protected and to absorb better. The very best one is from GNC called Mega Mens or Womens Ultra Mega The best one is the one that works best for your body. First try looking at the label and see it the ingredients come from natural food sources. Stay away from laboratory made products. Anything with acitate on the end won't be good for you. If you can't pronounce the words, don't take the pill, tablet or capsule. The best vitamin I ever took was MDR fitness tabs.

I felt wonderful while I was taking them; then I had to stop taking them because the coating on the tablet made me sick. But then the coating on most vitamins make me sick;

but for providing a good supplement; they were the best vitamins I ever took.