SiderAL® Drops, like all preparations of the SiderAL® family, uses sucrosomal technology to transport and deliver iron in the body. WHAT IS IRON GOOD FOR? Iron is an essential trace element for the human body. It is involved in many vital functions such as the transport of oxygen from the lungs to the tissues and organs of the body, as well as the functioning of the brain and the immune system. Particularly in children, its lack has been associated with an adverse effect on behavior as well as psychomotor and mental development.