About this item Plays a central role in energy production, immune system function, and neurological health NOW uses Ferrochel Iron Bisglycinate, which has clinically demonstrated superior absorption and is well tolerated because it is gentle and non-constipating Non-GMO Vegan / Vegetarian Soy free, nut free, dairy free, egg free During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.