Chemical phases of iron in large number of the Ayurvedic bhasma are investigated through Mössbauer Spectroscopy. Iron is found in oxide form as Fe2O3 or Fe3O4 or both in all the bhasma studied here irrespective of their nature their mode of preparation. The size distribution of iron particles is different for different bhasma. It is known that iron oxide is toxic to human body and it is also not easily absorbed in it. Mössbauer studies point to iron oxide being present in these bhasma and thus not safe for human consumption.