Thorne Iron Bisglycinate 25 mg Iron Supplement for Enhanced Absorption Without Gastrointestinal Side Effects NSF Certified for Sport Gluten-Free 60 Capsules
ThorneAnalysis updated May 2026 · How Scout scores
At a glance
Summary
This iron supplement features a high-quality form of iron known for enhanced absorption and reduced gastrointestinal side effects. While it contains several additives like hypromellose and silicon dioxide, these are common in supplements and do not pose significant health risks. The product is also NSF Certified for Sport, indicating a level of quality assurance and safety in its formulation.
Key ingredients 5
IronVery Good
Iron is an essential mineral crucial for the production of hemoglobin and oxygen transport in the blood. The bisglycinate form is known for its enhanced absorption and reduced gastrointestinal side effects compared to other forms of iron. This makes it a high-quality active ingredient in supplements.
Risks
Excessive iron intake can lead to toxicity, causing symptoms like nausea and abdominal pain.
Benefits
Iron supports energy production and cognitive function, making it vital for overall health.
HypromelloseNeutral
Hypromellose is a plant-derived cellulose used as a capsule material in supplements. It is considered safe and is commonly used as a vegetarian alternative to gelatin. It does not contribute any nutritional value but serves as an effective delivery medium.
See more about Hypromellose →Microcrystalline CelluloseNeutral
Microcrystalline cellulose is a refined wood pulp used as a bulking agent in supplements. It is inert and does not affect the nutritional profile of the product. It helps in the uniform distribution of active ingredients.
See more about Microcrystalline Cellulose →LeucineNeutral
Leucine is an essential amino acid that plays a role in protein synthesis and muscle repair. In supplements, it is often included to support muscle health. However, in this context, it is likely used as a flow agent or stabilizer.
Benefits
Leucine supports muscle protein synthesis and recovery.
Silicon DioxideNeutral
Silicon dioxide is used as an anti-caking agent to prevent clumping in powdered supplements. It is generally recognized as safe and does not affect the nutritional value of the product. It ensures the stability and consistency of the supplement.
See more about Silicon Dioxide →Processing
Ultra-Processed Foods
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