Iron supplements, particularly ferrous sulphate have been widely used as dietary supplements; however there are common side effects like constipation and stomach upset. Under such circumstances, an amino acid chelated iron supplement seems to be a reasonable solution since it is better absorbed from the gastrointestinal system and does not adversely affect the inner lining of the gastrointestinal system Deva Vegan Iron tablets also contain Vitamin B12 which is an important factor in proper RBC formation. Iron amino acid chelates are commonly used as food fortificants or therapeutic agents. DEVA Vegan Chelated Iron is 100% vegan, vegetarian and is certified by the Vegan Society, the non-profit organization that actually invented the word "vegan".