Solgar Gentle Iron vs Nutrition Geeks Iron

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

Pros

• ✓Multiple reviewers report noticeable reduction in fatigue and tiredness within days
• ✓Very small tablets — easy to swallow, widely noted by reviewers
• ✓365-tablet supply offers excellent value at roughly 12 months per pouch
• ✓Ferrous fumarate is a well-absorbed iron form with solid clinical backing

Cons

• ✗At least two orders reportedly contained fewer than 365 tablets — quality control concern
• ✗One reviewer noted stomach discomfort, a known risk with ferrous fumarate at higher doses
• ✗Not third-party tested, so label claims cannot be independently verified
• ✗No vitamin C included in the formula to aid iron absorption

Best For