Iron is an essential mineral that plays central roles in energy production, immune system function, and neurological health. Iron is an essential component of hemoglobin, a molecule that transports oxygen to the cells of the body, and myoglobin, which binds oxygen used in muscle tissues. NOW uses Ferrochel® Iron Bisglycinate, which has clinically demonstrated superior absorption and is well tolerated because it is gentle and non-constipating.* Not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish or tree nut ingredients. Produced in a GMP facility that processes other ingredients containing these allergens. Caution: For adults only. Do not exceed recommended dosage unless directed by a physician. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children. WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately. Ferrochel® is a registered trademark of Albion Laboratories, Inc. NOW® Double Strength Iron has twice the Iron (36 mg per capsule) as in our regular strength product (18 mg per capsule). Natural color variations may occur in this product. Do Not Eat Freshness Packet. Keep in Bottle. Store in a cool, dry place after opening. Please Recycle.