Iron Bisglycinate 25mg

Description

Iron bisglycinate 25mg of elemental iron per capsule, one capsule a serving, with the elemental figure verified by assay rather than calculated from the compound weight. That distinction is the whole reason to read an iron label carefully. Ferrous sulfate at 325 milligrams delivers about 65 milligrams of iron, so the number on the front of most iron bottles is the salt and not the mineral.

What is in the capsule

Elemental against compound weight on an iron label

Every iron salt carries its mineral as a fraction of its total weight. Ferrous sulfate is about 20 percent iron, fumarate about 33, gluconate about 12. A bisglycinate chelate holds the iron between two glycine molecules, and its elemental fraction is lower again than the simple salts.

This is why the elemental number goes in the main amount column on the minerals page with the compound weight printed underneath it. An iron bisglycinate 25mg capsule and a 325 milligram ferrous sulfate tablet are closer than their front labels suggest, and the only honest comparison is the elemental one.

What the chelate studies measured

Trials comparing ferrous bisglycinate against ferrous sulfate at matched elemental doses measured serum ferritin and haemoglobin alongside gastrointestinal adverse event rates, and several reported fewer complaints for the chelate. The effect sizes vary between studies and the populations differ.

A separate and more recent line of work measured hepcidin responses after iron doses and found that fractional absorption was higher when doses were given on alternate days rather than daily. That describes what those studies measured. It is not a claim about this bottle, and the dosing decision belongs with whoever ordered your blood test.

Why an iron bisglycinate 25mg serving is one capsule

Because 25 milligrams of elemental iron fits into one, where reaching the same figure from a low percentage salt can take two or three tablets. Units per serving is printed beside servings per container on every listing for that reason, since a 100 count bottle at three a serving is five weeks rather than three months.

The chelate is bulkier per milligram of iron than ferrous sulfate, which is the trade for the tolerability findings described above. An iron bisglycinate 25mg capsule is a larger capsule holding less compound than a sulfate tablet of similar elemental strength, and the panel prints both weights so that is visible.

Nobody should take iron blind

Iron is the one mineral on this shelf where excess is a documented hazard rather than a theoretical one, which is why the upper intake level is 45 milligrams and why the overdose warning is mandatory. Serum ferritin is a cheap test.

An iron bisglycinate 25mg capsule is a reasonable amount for somebody with a measured need and an unnecessary risk for somebody without one. We would rather write that sentence than sell a bottle to somebody who has not had the test.

What helps and what hinders

Ascorbic acid taken alongside the non haem iron in an iron bisglycinate 25mg capsule has been measured to increase its absorption, which is why the combined product on the women’s page pairs the two. Calcium supplements, tea, coffee and high fibre meals have all been measured as reducing it. Those are absorption study findings rather than instructions.

Reference figures

Recommended intakes by age, sex and pregnancy status, the upper level, the food sources and a summary of what supplementation trials have measured are all on the NIH iron fact sheet. It is the best free reading before buying any iron product at all.

Testing

Every lot of iron bisglycinate 25mg is assayed for elemental iron by an independent laboratory, with heavy metals and microbials screened alongside, since mineral salts are mined material. Under strength lots are withdrawn and the failing report stays published. Keep this bottle away from children, which is what the required warning on the label is about.