Mineral
Iron (Bisglycinate)
Also known as: Ferrochel, Iron glycinate, Chelated iron
Highly absorbable iron form that's gentle on the stomach. Best choice for those who experience GI upset with other iron forms.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Iron (Bisglycinate) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Thorne Iron Bisglycinate | 96 A | $0.27 |
| 2 | Transparent Labs Grass-Fed Whey Protein Isolate | 95 A | $2.00 |
| 3 | Complement ForHer Hormone Balance and Longevity Multivitamin for Women | 89 A | $0.67 |
| 4 | Thorne Basic Prenatal | 88 A | $1.23 |
| 5 | Ritual Essential Prenatal | 88 A | $0.65 |
| 6 | Pure Encapsulations Iron-C | 87 A | $0.32 |
| 7 | Solgar Gentle Iron | 87 A | $0.09 |
| 8 | Transparent Labs Multivitamin | 86 A- | $1.33 |
| 9 | Complement Restore | 86 A- | $1.90 |
| 10 | Seed AM-02™ Energy + Focus Supplement | 86 A- | $1.17 |
| 11 | Garden of Life Primal Defense Ultra | 86 A- | $0.56 |
| 12 | Garden of Life Organics Prenatal Multi | 86 A- | $1.14 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Iron (Bisglycinate) should I take?
The typical range is 18-65 mg daily based on need. Until stores replete
When should I take Iron (Bisglycinate)?
Empty stomach or with vitamin C. Can take with food if GI upset.
Which form of Iron (Bisglycinate) is best?
Bisglycinate — Gentle, well-absorbed. Other forms in the catalog: Ferrochel.
Is Iron (Bisglycinate) safe?
Commonly reported: Less constipation than other forms. Serious warnings: Iron overload if not deficient, Hemochromatosis. Avoid iron overload
Which Iron (Bisglycinate) supplement scores highest?
Thorne Iron Bisglycinate, at 96/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Anemia
- Iron deficiency
- Energy
- Women's health
How it works
- Glycinate chelation enhances absorption
- Doesn't cause constipation like other forms
- Absorbed intact through intestinal cells
Dosage
- Typical range
- 18-65 mg daily based on need
- Timing
- Empty stomach or with vitamin C
- With food
- Can take with food if GI upset
- Duration
- Until stores replete
- Special populations
- Menstruating women, vegetarians
Forms
- Bisglycinate
- Ferrochel
Safety
Common side effects
- Less constipation than other forms
Contraindications
- Hemochromatosis
- Non-deficient states
Products containing Iron (Bisglycinate)
Top-scoring supplements in our catalog that list Iron (Bisglycinate) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Well-absorbed with minimal GI effects
Grade A: Multiple well-designed human trials support the main claims.
Related in Mineral
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.