Iron is the one supplement to take only when you genuinely need it — and if a blood test or persistent fatigue points you there, this **Iron** tablet delivers 27mg of well-absorbed bisglycinate, squarely in the 15–45mg range used to rebuild low iron stores. At roughly 150% of the Daily Value, it's aimed at people actually running low: menstruating women, pregnancy, or a diagnosed deficiency.
The bisglycinate form absorbs far better than standard iron salts, with much less of the constipation and stomach upset iron causes. Pair it with vitamin C to boost uptake, and keep it away from calcium, coffee, and tea, which blunt absorption.
The key caveat is who should skip it: don't supplement iron "just in case." Without a documented deficiency, excess iron accumulates and raises long-term cardiovascular risk — and because iron is a leading cause of poisoning in young children, keep it well out of reach.
BioStacks
Other Ingredients (6)
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
Croscarmellose SodiumDisintegrant
Cross-linked cellulose derivative used as a superdisintegrant
EthylcelluloseCoating
A cellulose-derived polymer used for film coating and binding.
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
Stearic AcidLubricant
Saturated fatty acid used as tablet lubricant
How to Take It
Best taken in the morning
Bisglycinate is the gentle form — most people tolerate it on an empty stomach, which is exactly 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
Adults: take one tablet daily at mealtime.
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
$8.42
Cheaper than 87% 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.