Now Double Strength Iron 36 mg Review

Iron is an essential mineral that plays central roles in energy production, immune system function, and neurological health. Iron is an essential component of hemoglobin, a molecule that transports oxygen to the cells of the body, and myoglobin, which binds oxygen used in muscle tissues. NOW uses Ferrochel Iron Bisglycinate, which has clinically demonstrated superior absorption and is well tolerated because it is gentle and non-constipating. The product is listed as Gentle and Non-Constipating, and Ferrochel and the Albion Gold Medallion designs are trademarks of Albion Laboratories, Inc. NOW Double Strength Iron has twice the iron (36 mg per capsule) as the regular strength product (18 mg per capsule). Each bottle contains 90 veg capsules with one capsule per serving, taken daily with a meal. Each capsule supplies 36 mg elemental iron from 180 mg ferrous bisglycinate, which is 200% of the daily value. Other ingredients are rice flour, hypromellose cellulose capsule, vegetable stearic acid and silicon dioxide. The product is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients, though it is produced in a GMP facility that processes other allergen-containing ingredients. Certifications listed include Halal, Kosher (Triangle K), Non-GMO, Intertek GMP Supplement Certification, and Vegan. The product is also listed as made without dairy, made without eggs, made without nuts, made without soy, gluten free, and vegan/vegetarian. The product is made and quality tested in the USA with globally sourced ingredients, and the color is green with speckles, with natural color variations possible. Warnings state that this product is for adults only, and that accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6, so it should be kept out of reach of children. Store in a cool, dry place after opening. The company notes it is family owned since 1968. These statements have not been evaluated by the Food and Drug Administration.

Product Focus: Focus and MemoryAlso covers:Brain
Tier ⓘ
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Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$5

Study, Trial or Testing Result Summary

MembersHuman studies

2 of these 39 human studies gave iron by drip, not by mouth.

This product gives 36 mg of iron a day, which is the 80 mg dose that in studies, so any for thinking may be smaller. Iron seems to thinking mainly in people who are in iron. …

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Review Totals and Summary

Members75,062 reviews
75,062 reviews · IHerb 56,794 · Fruitfulyield 18,202 · Walmart 46 · NOW Foods 11 · Swanson Vitamins 7 · Beauty-10 1 · Pureformulas 1

Customers generally have a very view of Now Double Strength Iron 36 mg capsules, with about 56859 ratings across various stores, of which are 4 or 5 stars. This summary focuses exclusively on feedback for the capsule form of the product. **What it does for buyers** customers report in their iron levels and overall -being after taking these capsules. …

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Biohacker Summary

MembersWhat our biohacker panel says

Those who it link it to brain function, muscle, thyroid support, hair and pregnancy, and one advises iron supplements for women of reproductive age who are deficient. point to food first, especially red meat and liver with their heme iron, and one takes 10 milligrams of heme iron, while another noted tea blocks absorption. …

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RAL Summary

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Nervous system, Blood and circulatory system. Combine with and possible side are for members.

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Supplement Facts

Iron 36 mg
Supplement Facts
Serving Size 1 Veg Capsule
Servings Per Container 90
Amount Per Serving% Daily Value
Iron (elemental) (from 180 mg Ferrous Bisglycinate) (Ferrochel™)36 mg200%

Other ingredients: Rice Flour, Hypromellose (cellulose capsule), Stearic Acid (vegetable source) and Silicon Dioxide.

Directions: Take 1 capsule daily with a meal. Do not exceed recommended dosage unless directed by a physician.

Label source: Swanson · Report a label change

Where to Buy

Now · iHerb · Walmart
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Graded October 28, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.