Solgar Gentle Iron vs Active Iron
Side-by-side comparison of scores, ingredients, prices and real customer feedback for Solgar Gentle Iron and Active Iron.
Last verified: 01 Mar 2026 · Based on 66 reviews
Our Verdict: Solgar Gentle Iron or Active Iron?
Solgar edges ahead with an 82/100 score thanks to superior ingredient quality (90/100) and a strong track record of verified blood test improvements. Active Iron scores higher on effectiveness (90/100) and suits those who need stomach-friendly dosing on an empty stomach or can't tolerate Solgar's capsule ingredients. Vegans and those needing lab-confirmed results should choose Solgar; Active Iron is better for sensitive stomachs on a tighter budget.
— AIScored Editorial Team
Solgar Gentle Iron scores 82.0/100 vs Active Iron at 80.0/100. Solgar Gentle Iron wins on ingredient quality, value for money, side effects. Active Iron is stronger on effectiveness.
Solgar Gentle Iron vs Active Iron: What Does the Data Say?
Gentle Iron 20mg Vegetable Capsules from Solgar edges out Active Iron 30 Capsules with an overall score of 82.0/100 against 80.0/100. The two differ sharply in form and content. Solgar uses iron bisglycinate at 20mg per capsule in a vegan vegetable shell while Active Iron relies on a proprietary blend that includes animal-derived ingredients and delivers its dose in a once-daily capsule. Users of Solgar report measurable rises in ferritin and haemoglobin from blood tests plus better energy and hair condition. Active Iron users instead highlight faster relief from cold hands and feet along with improved circulation and energy within days.
Solgar suits vegetarians vegans women with heavy periods and pregnant or postpartum women who want a gentle option that rarely causes constipation or stomach upset. Its ingredient quality scores 90.0/100 and value sits at 76.0/100 yet the low 20mg dose means some people need two to four capsules daily which pushes the cost up from the £18.84 price. Active Iron fits those with iron deficiency anaemia who react badly to standard iron tablets and need something they can take on an empty stomach without distress. It scores higher on effectiveness at 90.0/100 but lower on ingredient quality at 70.0/100 and value at 70.0/100 for its £16.99 price. People who avoid animal products should skip it.
Both capsules are easy to swallow with no reported taste issues. Solgar carries no common allergens beyond the vegetable capsule itself. Active Iron may trigger reactions in anyone sensitive to its animal-derived components. Choose based on diet and how much iron you actually need each day.
How Do the Scores Compare?
Gentle Iron (Iron Bisglycin...
Solgar
|
30 Capsules
Active Iron
|
|
|---|---|---|
| Overall Score | 82.0 | 80.0 |
| Effectiveness | 80.0/100 |
90.0/100
Best
|
| Ingredient Quality |
90.0/100
Best
|
70.0/100 |
| Value for Money |
76.0/100
Best
|
70.0/100 |
| Side Effects |
92.0/100
Best
|
90.0/100 |
| Certifications |
72.0/100
Best
|
40.0/100 |
| Best Price | £18.31 Holland & Barrett → |
£16.99
Holland & Barrett →
Cheapest
|
| Form | Capsules | None |
| Dose | None | None |
| Third-Party Tested | ✗ No | ✗ No |
| Reviews Analysed | 62 | 4 |
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
30 Capsules
Pros
- ✓Excellent gastrointestinal tolerability—users report no constipation, diarrhea, or stomach pain (major complaint with standard iron supplements)
- ✓Rapid symptom relief—cold hands/feet improved within days; energy and circulation improvements noted
- ✓Can be taken on an empty stomach without distress, improving convenience and absorption
- ✓Consistent 5/5 rating across all reviews; high user satisfaction and repeat purchasing
Cons
- ✗Not third-party tested or independently verified for potency/purity
- ✗Not vegan (contains animal-derived ingredients in formulation)
- ✗Limited review data (only 4 reviews) may not represent full user population
- ✗Premium pricing typical of specialized iron formulations; one reviewer found it on clearance suggesting possible reduced demand
Best For
Score Breakdown: Solgar Gentle Iron vs Active Iron
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.
What are the key differences?
Frequently Asked Questions
Which is better, Solgar Gentle Iron or Active Iron? ▼
Is Solgar Gentle Iron worth the price compared to Active Iron? ▼
Which has fewer side effects? ▼
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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.
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