BioStacksIron and hair
For hair support, Iron is a important ingredient backed by research. Essential for oxygen transport via hemoglobin and energy production in mitochondria. Iron bisglycinate (Ferrochel) offers 2–4x higher bioavailability than ferrous sulfate with significantly less GI distress—it's the preferred supplemental form.
What dose to look for
Clinical studies typically use 15–45 mg of iron. 15-25 mg for prevention/maintenance, 25-45 mg for deficiency treatment. RDA is 8 mg (men) / 18 mg (premenopausal women). Bisglycinate forms effective at lower doses due to 2-4× bioavailability. Supplements that fall short of this threshold are unlikely to match what clinical trials achieved.
What form to look for
Avoid ferrous sulfate — common gi side effects. Avoid ferrous fumarate — significant gi side effects. Avoid ferrous gluconate — low elemental iron (12%). For best results, choose iron bisglycinate (ferrochel).
What the research says
The clinical evidence for iron in hair is strong. Essential for oxygen transport via hemoglobin; bisglycinate form has 2-4x better absorption than ferrous sulfate Learn more
