Skip to content

Solgar Gentle Iron vs Solgar Gentle Iron

Side-by-side comparison of scores, ingredients, prices and real customer feedback for Solgar Gentle Iron and Solgar Gentle Iron.

Last verified: 01 Mar 2026 · Based on 124 reviews

Our Verdict: Solgar Gentle Iron or Solgar Gentle Iron?

Solgar's 180-capsule Gentle Iron scores higher at 82/100 versus 77/100 and costs just £0.10 per capsule compared to £0.14 for the 90-capsule version, making it the clear pick for regular users. The 90-capsule pack suits those wanting to trial iron bisglycinate before committing to a larger supply.

— AIScored Editorial Team

82.0
Score Summary

Solgar Gentle Iron scores 82.0/100 vs Solgar Gentle Iron at 77.0/100. Solgar Gentle Iron wins on effectiveness, ingredient quality, value for money.

Solgar Gentle Iron vs Solgar Gentle Iron: What Does the Data Say?

Solgar Gentle Iron (Iron Bisglycinate) 20mg Vegetable 180 Capsules offers better value for money with a score of 76/100 compared to 66/100 for the smaller pack. Both products use iron bisglycinate. This specific ingredient is easier on the gut than ferrous sulfate. It rarely causes the constipation or nausea common with other iron pills. The 180-capsule bottle costs £18.84 and achieves a high ingredient quality score of 90/100. Solgar Gentle Iron 20mg 90 Vegi Capsules costs £12.64 and scores 86/100 for its ingredients.

Vegetarians and women with heavy periods should choose the 180-capsule bottle for consistent support. It is more effective with a score of 80/100. The 20mg dose is quite low. You might need to take two or four capsules daily if your deficiency is severe. This makes the larger pack more sensible for your wallet. Solgar Gentle Iron 20mg 90 Vegi Capsules is a decent starting point for those with mild deficiency or pregnant women needing gentle support. It has an effectiveness score of 76/100.

Both supplements come in vegetable capsules that are easy to swallow. They do not have a reported bad taste. Many users see real changes in their ferritin levels and hair health. Solgar Gentle Iron (Iron Bisglycinate) 20mg Vegetable 180 Capsules is the superior option overall with a total score of 82.0/100. Solgar Gentle Iron 20mg 90 Vegi Capsules finishes with 77.0/100.

How Do the Scores Compare?

Gentle Iron (Iron Bisglycin...
Gentle Iron 20mg 90 Vegi Capsules
Gentle Iron (Iron Bisglycinate) 20mg Vegetable 180 Capsules
Gentle Iron (Iron Bisglycin...
Solgar
Gentle Iron 20mg 90 Vegi Capsules
Gentle Iron 20mg 90 Vegi Capsules
Solgar
Overall Score 82.0 77.0
Effectiveness 80.0/100
Best
76.0/100
Ingredient Quality 90.0/100
Best
86.0/100
Value for Money 76.0/100
Best
66.0/100
Side Effects 92.0/100
Best
91.0/100
Certifications 72.0/100
Best
60.0/100
Best Price £18.31 Holland & Barrett → £12.64 Amazon UK →
Cheapest
Form Capsules capsule
Dose None None
Third-Party Tested ✗ No ✗ No
Reviews Analysed 62 62

Gentle Iron (Iron Bisglycinate) ...

Pros

  • Iron bisglycinate form is exceptionally gentle — virtually no constipation or GI irritation across the large majority of reviewers
  • Multiple users confirm measurable ferritin and haemoglobin improvements via blood tests
  • Widely reported improvements in energy levels, reduced fatigue, and better hair condition
  • Certified vegan, Kosher Parve, Halal, Non-GMO, gluten-free, and dairy-free — suitable for restricted diets

Cons

  • 20mg dose is conservative and may be insufficient for severe iron deficiency without taking 2–4 capsules daily, which increases cost significantly
  • Not third-party tested for purity or label accuracy
  • Requires avoiding calcium-rich foods or supplements near dosing time and ideally co-administration with vitamin C — some find this inconvenient
  • Isolated reports of digestive upset, suggesting individual tolerance still varies

Best For

Vegetarians and vegans with insufficient dietary iron intake Women with heavy periods or ongoing menstrual iron loss Pregnant or postpartum women needing a gut-friendly iron source People who have previously experienced GI side effects from standard iron supplements Those with IBS, SIBO, Hashimoto's, or other conditions requiring a highly tolerable iron form Maintenance supplementation after recovering from diagnosed iron deficiency
View full review →

Gentle Iron 20mg 90 Vegi Capsules

Pros

  • Iron bisglycinate is among the most stomach-gentle and bioavailable forms of iron available
  • Overwhelming reviewer consensus: no constipation, nausea, or digestive discomfort
  • Effective at raising ferritin and haemoglobin levels, with multiple users citing confirmed blood test improvements
  • Well-tolerated by sensitive groups including pregnant women and those with IBS or autoimmune conditions

Cons

  • 20mg single daily dose may be insufficient for correcting significant iron deficiency without medical guidance to increase dosage
  • No confirmed third-party purity or potency testing (e.g. NSF, Informed Sport)
  • Premium Solgar pricing makes it considerably more expensive than generic iron supplements
  • Rare but present reports of GI discomfort, indicating bisglycinate does not suit every individual

Best For

Women with heavy periods or mild-to-moderate iron deficiency Pregnant or postpartum women needing gentle, low-risk iron support People who experience constipation or nausea from standard ferrous sulfate tablets Those with IBS, IBD, SIBO, or other GI sensitivities requiring careful supplementation Vegetarians and vegans prone to lower dietary iron intake Maintenance supplementation after completing a course of prescribed iron treatment
View full review →

Score Breakdown: Solgar Gentle Iron vs Solgar Gentle Iron

Solgar Gentle Iron Winner 82.0/100

Solgar Gentle Iron is an iron bisglycinate supplement that stands out primarily for its exceptional gastrointestinal tolerability, with the vast majority of 62 reviewers across Amazon, Holland & Barrett, and iHerb explicitly contrasting it favourably against conventional iron supplements that caused constipation or nausea.

Effectiveness
Gentle Iron (Iro..
80.0/100
Gentle Iron 20mg..
76.0/100
Ingredient Quality
Gentle Iron (Iro..
90.0/100
Gentle Iron 20mg..
86.0/100
Value for Money
Gentle Iron (Iro..
76.0/100
Gentle Iron 20mg..
66.0/100
Side Effects
Gentle Iron (Iro..
92.0/100
Gentle Iron 20mg..
91.0/100
Certifications
Gentle Iron (Iro..
72.0/100
Gentle Iron 20mg..
60.0/100

What are the key differences?

Solgar Gentle Iron is best for: Vegetarians and vegans with insufficient dietary iron intake, Women with heavy periods or ongoing menstrual iron loss
Solgar Gentle Iron is best for: Women with heavy periods or mild-to-moderate iron deficiency, Pregnant or postpartum women needing gentle, low-risk iron support

Frequently Asked Questions

Which is better, Solgar Gentle Iron or Solgar Gentle Iron?
Solgar's 180-capsule Gentle Iron scores higher at 82/100 versus 77/100 and costs just £0.10 per capsule compared to £0.14 for the 90-capsule version, making it the clear pick for regular users. The 90-capsule pack suits those wanting to trial iron bisglycinate before committing to a larger supply. Solgar Gentle Iron scores 82.0/100 overall while Solgar Gentle Iron scores 77.0/100. Solgar Gentle Iron comes out ahead, scoring higher on effectiveness (80.0 vs 76.0). Solgar Gentle Iron is best suited for Vegetarians and vegans with insufficient dietary iron intake and Women with heavy periods or ongoing menstrual iron loss. Solgar Gentle Iron is better for Women with heavy periods or mild-to-moderate iron deficiency and Pregnant or postpartum women needing gentle, low-risk iron support.
Is Solgar Gentle Iron worth the price compared to Solgar Gentle Iron?
Solgar Gentle Iron costs £18.31 while Solgar Gentle Iron is £12.64. For value, Solgar Gentle Iron scores 76.0/100 vs Solgar Gentle Iron's 66.0/100. Solgar Gentle Iron delivers better value relative to its quality. Note that Solgar Gentle Iron comes as capsules while Solgar Gentle Iron is capsule, which may affect your preference.
Which has fewer side effects?
Solgar Gentle Iron scores 92.0/100 for side effects (higher means fewer reported issues) while Solgar Gentle Iron scores 91.0/100. Reviewers report fewer side effects with Solgar Gentle Iron. For certification and testing, Solgar Gentle Iron scores 72.0/100 vs Solgar Gentle Iron's 60.0/100. Always consult a healthcare professional before starting any supplement.

Related Product Comparisons

Disclaimer: AIScored provides data-driven comparisons based on publicly available reviews. This is not medical advice. Affiliate links may earn us a commission at no extra cost to you.

Feedback & Suggestions

Spotted an issue? Wrong price, incorrect data, or something else off? Let us know and we'll fix it.

Missing a product you'd like us to review? Tell us the product name and we'll consider adding it.