THORNE Iron Bisglycinate Supplement, 25 mg, 60 Capsules for Gentle Iron Support

THORNE Iron Bisglycinate is an iron supplement designed to support red blood cell formation, with 25 mg of elemental iron per capsule in a well-absorbed bisglycinate form.

• 25 mg of elemental iron per capsule as iron bisglycinate — provides dietary iron in a well-absorbed form.
• Non-constipating form — offers an iron option designed to be gentle on digestion.
• 60 capsules per bottle — provides a capsule-based supply of iron.
• NSF Certified for Sport — tested against label claims and for the absence of nearly 300 substances banned by many major athletic organizations.
• Trusted by 100+ professional sports teams; ranked the #1 most recommended clinical brand in a 2026 independent U.S. survey of supplement consumers and health-care practitioners.

Iron is an essential dietary mineral for forming new red blood cells. This supplement is relevant for people seeking an iron source, including women of childbearing age, people following vegan or vegetarian diets, and those who have experienced blood loss from surgery or injury. Low iron may be associated with weakness, fatigue, shortness of breath, dizziness, drowsiness, irritability, or infrequent menstruation. Nearly 1 in 3 adults in the U.S. may have low iron levels.

What form of iron does each capsule provide?

Each THORNE Iron Bisglycinate capsule provides 25 mg of elemental iron as iron bisglycinate. This form is described as well absorbed and non-constipating, making the supplement a capsule-based way to add iron to a dietary routine.

• Iron is an essential nutrient for the formation of new red blood cells.
• The amount is stated per capsule; no daily-use schedule is provided here.

Who may find THORNE Iron Bisglycinate relevant?

THORNE Iron Bisglycinate is relevant to people whose circumstances make dietary iron important, including women of childbearing age, vegans and vegetarians, and people after blood loss from surgery or injury. Low iron can be associated with symptoms such as weakness, fatigue, shortness of breath, dizziness, drowsiness, irritability, and infrequent menstruation.

• Dietary iron contributes to making new red blood cells.
• Symptoms can vary; the product is a dietary supplement, not a diagnosis or treatment.

What does NSF Certified for Sport mean for this supplement?

THORNE Iron Bisglycinate is tested for compliance with its label claims and for the absence of nearly 300 substances banned by many major athletic organizations. This certification is relevant to athletes who need a supplement screened for those substances.

• THORNE is trusted by more than 100 professional sports teams.
• The #1 most recommended clinical brand ranking is based on a 2026 independent survey of U.S. supplement consumers and health-care practitioners.

This supplement may suit adults looking to add iron in bisglycinate form, particularly women of childbearing age, vegans and vegetarians, and people after blood loss from surgery or injury. Each capsule supplies a defined amount of elemental iron, and NSF Certified for Sport testing adds a specific screening standard for athletes.

Ingredients

One Capsule Contains: Iron (as Ferrochel® Ferrous Bisglycinate Chelate) 25 mg. Other Ingredients: Hypromellose (derived from cellulose) capsule, Microcrystalline Cellulose, Leucine, Silicon Dioxide.