MegaFood Blood Builder is one of their top-selling products for a reason: it’s clinically proven to increase iron levels and reduce fatigue without common gastrointestinal side effects such as nausea or constipation (there, we said it!). We make it with nourishing, whole foods, like beets and organic oranges, plus folic acid and B12 for healthy red blood cell production, and vitamin C to support iron absorption. It’s safe to take on an empty stomach.