Legacy AI grade · Sources dated 2026-06-01. Not expert reviewed. Coverage is limited to the listed sources. About the new summary workflow
Lactoferrin for Iron Deficiency Anemia
Several small trials suggest oral lactoferrin can raise hemoglobin in iron-deficiency anemia at least as well as ferrous iron, often with fewer digestive side effects. But the evidence is preliminary and no health regulator or clinical guideline endorses it as a treatment, so it is not a substitute for standard iron therapy.
Why this grade7-layer evidence engine
The clinical signal is consistent but thin. Two meta-analyses and a systematic review (PMID 29059584; PMID 35276902; PMID 37661669) all found oral lactoferrin matched or beat ferrous salts on hemoglobin, with a pooled rise of about 0.77 g/dL in pregnancy and 1.18 g/dL in a broader pooled analysis, alongside fewer gastrointestinal complaints. A small hemodialysis RCT (PMID 38231718) and a mechanistic review (PMID 34440102) point to an anti-inflammatory, hepcidin-lowering pathway. The direction is reassuringly uniform.
What holds this back from a higher grade is the lack of independent confirmation. The pivotal pregnancy trials come largely from a single Egyptian research group, the largest RCT enrolled only 140 patients, doses and lactoferrin formulations vary widely, and funding is often undisclosed. There is no large, multi-center Phase III trial of the kind that underpins standard iron salts.
Institutional backing is essentially absent. Regulators approve lactoferrin only as a food ingredient (US FDA: "FDA has no questions"; EFSA as a safe novel food; Taiwan TFDA as nutritional additive), with no approved disease claim. Major clinical sources, including NIH ODS, Mayo Clinic, Cleveland Clinic, Harvard Health and the ASH/AGA guidelines, do not mention it for this condition. Oral or IV iron remains first-line, and IDA should be diagnosed and its underlying cause investigated before any supplement is considered.
Scoring transparency
All scores computed by a 7-layer evidence engine — fully auditable▸View the full decision path (audit trail)
- compute_raw_score — 加權公式: L2×0.30 + L3×0.25 + L5×0.25 + L11×0.10 + L1×0.10 = 0.625
- tier_from_score — 依分數區間映射至 tier letter
- apply_hec_rules — 高品質 SR/MA 顯示 positive (2 篇 > 0 negative)
- tier_strict_requirement_check — Tier 條件達標，未降階
- detect_disputes — 偵測到 0 個 hard + 1 個 soft dispute
- decide_status — 依 tier + dispute 結果決定 status