This product delivers 36 mg of elemental **iron** using **Ferrochel** (ferrous bisglycinate), a chelated form that binds iron to the amino acid glycine. Bisglycinate is absorbed through a different pathway than standard iron salts, which means it causes significantly fewer GI side effects like nausea and constipation. At 36 mg, the dose sits in the upper therapeutic range used in clinical studies for addressing deficiency, while staying below the 45 mg tolerable upper limit.
Iron is essential for oxygen transport in your blood, energy metabolism, and cognitive function. If you are deficient or at risk of deficiency -- particularly if you are premenopausal, pregnant, vegan, or a regular endurance athlete -- a dedicated iron supplement at this dose can meaningfully improve fatigue and physical performance. The evidence base for iron supplementation in deficient individuals is strong, backed by numerous RCTs.
One thing to keep in mind: iron absorption improves substantially when taken alongside vitamin C, which converts iron into a more absorbable form. This product does not include vitamin C, so pairing it with a food or supplement source of vitamin C at the same meal can help you get more out of each capsule. The capsule itself is vegan-friendly and the inactive ingredient list is minimal.
BioStacks
Other Ingredients (4)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Best taken in the morning
Ferrochel is iron bisglycinate — the gentle form. Most people tolerate it on an empty stomach, which is where it absorbs best. Vitamin C may help absorption.
On an empty stomach
Keep it away from coffee, tea and dairy
Space it a couple of hours from Calcium, Zinc, Magnesium, Manganese and Green Tea Leaf Extract
On the label
Suggested Usage: Take 1 capsule daily with a meal.
Labels usually say “with food” because it's gentler on the stomach, not because it absorbs better. Fasted absorbs more — start there, and switch to a light meal if it bothers you.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$9.78
Cheaper than 81% of 138 iron supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. studied ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.