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IRONThorne

Iron Bisglycinate 25mg

The iron you can actually tolerate. Bisglycinate chelate causes 75% fewer GI side effects than the ferrous sulfate in most iron supplements. Same or better absorption. 25mg therapeutic dose. If you quit iron before because of stomach issues, try this form.

8.5/10
EXCELLENT

The gentle iron. Bisglycinate chelate absorbs well without the constipation, nausea, and black stools that ferrous sulfate causes. 25mg is a therapeutic dose. Thorne quality.

1 ingredientCapsules60 servings
We'd recommend this
Evidence
10.0
Dosing
8.0
SynergyN/A (single ingredient)
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Whenmorning

Away from calcium, coffee, and tea which block iron absorption.

Foodwith light food or empty stomach

Bisglycinate absorbs well without food. Light food if nausea occurs.

SafetyAll clear

Only take if iron deficiency is confirmed by bloodwork. Excess iron is harmful.

ResearchStrong evidence

Iron bisglycinate vs ferrous sulfate has multiple comparative studies showing better tolerability.

What We Like

  • Iron bisglycinate causes 75% fewer GI side effects than ferrous sulfate.
  • 25mg is a standard therapeutic dose for deficiency.
  • Chelated form absorbs well even without vitamin C.
  • Thorne quality and purity testing.
  • 60 servings per bottle.

Watch Out For

  • No vitamin C included (would enhance absorption further).
  • Premium price for iron.
  • Single ingredient.

Ingredient Breakdown

1 clinical
Clinical Adequate Underdosed Overdosed|Bar = % of clinical dose
IngredientDoseStatusvs. Clinical
Iron9.0

Iron Bisglycinate

25 mgCLINICAL
93%
25 mg

of 27mg

CLINICAL
93%
In our database (click to learn more) Not yet reviewed

Our Analysis

Best For

Women with heavy periods.Vegetarians and vegans.People who couldn't tolerate other iron supplements.Confirmed iron-deficient individuals.

Skip This If

People with normal iron levels.Men (unless deficient).Those with hemochromatosis.

Time to Feel

2-4 weeks for energy. 8-12 weeks for lab normalization.

Value

GOOD

How to take: Use until iron levels normalize. Recheck with bloodwork every 3 months.

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