Solgar Gentle Iron 25 mg Review
#4 of 9 · Best Everyday Gentle Iron✓ Label verified · Supplement Facts read Sep 7, 2026Real retailer photo, cut out. Label unedited.
Consider it. A rock-solid gentle chelate you can buy anywhere. Same well-tolerated bisglycinate form and correct 25 mg dose as our top picks, from a trusted heritage brand at a fair mid-range price.
~$13.50~$0.15
Why It Scores 8.2 — And The Label Line Behind Each Number
Form & Bioavailability
30% of scoreIron bisglycinate — the same gentle, well-absorbed chelate class as our leaders. Solid bioavailability without the inhibitor problems of ferrous salts.
- Form
- Iron bisglycinate
- Diet
- Vegan, Kosher, Non-GMO
Dose Appropriateness
20% of score25 mg elemental in one veg capsule is a proper repletion dose, taken once daily with a meal.
GI Tolerance & Safety
20% of scoreThe 'Gentle Iron' positioning is earned — bisglycinate is non-constipating and among the best-tolerated oral forms.
Third-Party Testing & Purity
20% of scoreFree of gluten, wheat, dairy, yeast and sugar and vegan/Kosher, but no independent product-level seal or published batch testing is stated — you buy on brand reputation.
Value per Serving
10% of scoreAt ~$0.15 per capsule over 90 servings it is fairly priced, but essentially a pricier, lower-count Nutricost with the same molecule.
- Size
- 90 veg capsules (90 servings)
- Serving
- 1 veg capsule daily
- Price (approx.)
- ~$13.50
- Cost / serving
- ~$0.15
- More Specs
- Elemental iron
- 25 mg per veg capsule
- Free-from
- Gluten, wheat, dairy, yeast, sugar
Label verified. Every figure read from the Supplement Facts photo, Sep 7, 2026.
Marketing Claims Vs. Reality
Non-constipating 25 mg bisglycinate
Bisglycinate is a chelated form with markedly fewer GI complaints than ferrous salts (Milman 2014; Tolkien 2015), supporting the 'Gentle Iron' positioning at this dose.
Free of common allergens; vegan and Kosher
Consistent with the stated free-from panel (gluten, wheat, dairy, yeast, sugar) and dietary certifications — verifiable formulation claims.
Carries an independent product-level seal (NSF/USP)
No product-level NSF or USP certification is stated for this product; verification rests on Solgar's brand reputation rather than a published seal or batch COA.
Trusted heritage brand quality
Solgar is a long-established brand, which supports general confidence, but brand heritage is a reputational claim, not a substitute for product-level third-party testing.
What Our Test Actually Found
Availability is its real edge
Unlike some bulk-online chelates, Solgar Gentle Iron is stocked in most pharmacies and health stores. When you want the gentle form today rather than in two days, that convenience is worth something.
The form and dose are textbook
25 mg of bisglycinate, once daily, vegan and allergen-free — there is nothing to fault in the actual product. It sits right alongside the top picks on form and dose.
Verification is where it slips
Solgar does not state a product-level NSF/USP seal or publish batch COAs for this item. That is the sole reason it ranks below Thorne and Nutricost — you are trusting the brand, not a document.
Priced fairly, not aggressively
At about $0.15 a capsule it is reasonable, but Nutricost delivers the same molecule for roughly half. You pay a modest premium for the heritage name and retail availability.
Full analysis: all pros & cons (7), buy if / skip if
- Non-constipating 25 mg bisglycinate — the category staple
- Free of the common allergens; vegan and Kosher
- Trusted heritage brand, one capsule daily with a meal
- Fair mid-range price
- Widely stocked in stores
- No independent product-level seal (NSF/USP) stated — you buy on brand reputation
- Essentially a pricier, lower-count Nutricost with the same molecule
- You want a gentle chelate available in most stores today
- You need a vegan, Kosher, allergen-free iron
- You trust an established heritage supplement brand
- You want a fair mid-range price without hunting for deals
- You want the lowest cost per milligram (Nutricost undercuts it)
- You require a stated product-level NSF/USP seal (choose Thorne)
Same well-tolerated bisglycinate form and correct 25 mg dose as our top picks, from a trusted heritage brand at a fair mid-range price. You buy it on brand reputation rather than a stated product-level seal or published testing.
Solgar's Gentle Iron is the category staple you can grab almost anywhere: 25 mg of non-constipating bisglycinate in a vegan capsule, free of the common allergens. It does nothing wrong. It simply lacks the published batch testing of Nutricost and the product-level certification of Thorne, so it lands mid-pack on verification rather than on quality.
A dependable gentle chelate, mid-pack on verification
A rock-solid, widely-stocked gentle chelate you can grab almost anywhere. It does nothing wrong — it just lacks the published testing of Nutricost or the certification of Thorne, so it lands mid-pack on verification, not on quality.
If This Doesn’t Fit — Try These
02Nutricost Iron Bisglycinate
Our take: the smart-money buy.
01Thorne Iron Bisglycinate
Our take: if you have confirmed low iron and want one bottle to trust, this is it.
07NOW Iron 18 mg
Our take: the maintenance and top-up choice, not the repletion choice.
Quick Answers
Is 'Gentle Iron' just marketing?
No — it refers to the bisglycinate form, which is genuinely less constipating than ferrous salts. The name reflects a real tolerance advantage backed by trial data (Milman 2014, Tolkien 2015).
How is it different from Nutricost or Thorne?
The iron molecule and dose are the same. Solgar's differences are wider retail availability and brand heritage, but it does not state the product-level seal Thorne has or publish the batch testing Nutricost does.
Is it a good repletion dose?
Yes, 25 mg elemental is a proper repletion dose for correcting confirmed low iron. Use it ferritin-guided and retest rather than taking it indefinitely.
Is it suitable for vegans?
Yes. It is vegan, Kosher and free of gluten, wheat, dairy, yeast and sugar, making it one of the more allergen-friendly options here.
Sources & Further Reading
2 peer-reviewed sources, each linked to PubMed
- [1] Milman N, et al. J Perinat Med. 2014;42(2):197-206. PMID 24152889 — Ferrous bisglycinate 25 mg iron is as effective as ferrous sulfate 50 mg iron in the prophylaxis of iron deficiency and anemia during pregnancy in a randomized trial. Confirms the gentle, effective profile of the 25 mg bisglycinate form this product uses.
- [2] Tolkien Z, et al. PLoS One. 2015;10(2):e0117383. PMID 25700159 — Ferrous sulfate supplementation causes significant gastrointestinal side-effects in adults: a systematic review and meta-analysis. Establishes the GI-tolerance advantage of chelates over the ferrous salts this product avoids.
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