What the reviews found
Supplements for Iron & Anemia
5 where systematic reviews concluded a benefit, 0 with mixed findings, 3 where they concluded no effect. Every line quotes the review and links it, so you can read the sentence yourself.
Reviews found a benefit
Systematic reviews concluded these improve an outcome tied to iron & anemia, and none concluded no effect.
- Benefithemoglobin (anemia)
“moringa at higher (14-30 g/day) not lower (<10 g/day) doses improved hemoglobin (Hgb) in children with iron deficiency anemia, improved Hgb and vitamin A status in postmenopausal women, and increased BMI in HIV+ underweight adults.” PMID 35302264
Benefithemoglobin(as Moringa oleifera)“In humans, moringa at higher (14-30 g/day) not lower (<10 g/day) doses improved hemoglobin (Hgb) in children with iron deficiency anemia, improved Hgb and vitamin A status in postmenopausal women, and increased BMI in HIV+ underweight adults.” PMID 35302264
- Top-scored productThorne Iron Bisglycinate3 reviews cited96Benefithemoglobin/hematologic indices
“At 6 months, liposomal iron produced a significantly greater increase in hemoglobin compared with conventional iron (MD 0.96 g/dL, 95% CI 0.09-1.82; P = 0.03), although heterogeneity was substantial (I2 = 92.9%).” PMID 42183880 · 3 reviews
- Top-scored productThorne 5-MTHF 5 mg1 review cited96Benefitanaemia
“In NTDs and anaemia, we identified strong evidence supporting the protective role of folate status based on intervention trials and observational studies.” PMID 41612855
- Benefithemoglobin levels
“Our study found that children with kidney failure requiring dialysis could partially benefit from L-carnitine, including increased Hb, decreased ESA requirement, reduced ApoB, and improved cardiac function.” PMID 40864195
- Benefitiron status / hematological parameters
“Both A. platensis and C. vulgaris improved hematological parameters, including hemoglobin, serum ferritin, and red blood cell counts.” PMID 41255135
Reviews found no effect
Reviews studied these for an outcome tied to iron & anemia and concluded they made no difference.
- No effecthematological markers(as Ashwagandha Brood-Spectrum)
“No evidence of the beneficial effects of Ws supplementation on hematological markers was reported.” PMID 37428341
- B Complex1 review citedNo effectanaemia
“may have little to no effect on growth (i.e. height/length), cognitive function (e.g. attention), development outcomes (e.g. motor skill development), or anaemia, compared to placebo, no intervention, or the same supplements without vitamin B12.” PMID 42227307
- Top-scored productThorne Vitamin B121 review cited96No effectanaemia
“Vitamin B12 supplementation (alone or when supplemented with other micronutrients) in children may have little to no effect on growth (i.e. height/length), cognitive function (e.g. attention), development outcomes (e.g. motor skill development), or anaemia, compared to placebo, no intervention, or the same supplements without vitamin B12.” PMID 42227307
Not enough to say
Reviews of Alpha Lipoic Acid could not conclude either way on iron & anemia.
How this page is built
Each finding is the conclusion a set of systematic reviews reached on one outcome — whether an ingredient helped, made no difference, or could not be judged — with a sentence quoted from one review, checked to appear in its PubMed abstract. It records the direction, not the size, of an effect. Reviews run in populations such as people with cancer, pregnancy, surgery or children are left out, because applying them to a general reader would mislead. Evidence last refreshed September 2026. Abstracts courtesy of the U.S. National Library of Medicine (PubMed).
Other goals
Educational only. A review finding a benefit on average does not mean a supplement will help you, or that it is safe alongside your medication. If you are treated for iron & anemia, talk to your clinician before adding anything.