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    Ingredient guide · Ingredient reference

    Vitamin A and iron: a nutritional-anemia trial tested both nutrients

    A four-arm trial found the largest hemoglobin response with vitamin A plus iron in anemic pregnant women. The setting does not justify adding high-dose vitamin A to every prenatal regimen.

    Read the evidence ↓

    Supplement Science Insights Editorial Team

    Published September 23, 2026

    What the source establishes

    In West Java, 251 anemic pregnant women were randomized to vitamin A, iron, both or placebos for eight weeks. The four-arm design allowed the contributions of the nutrients to be compared. [1]

    The combination produced the largest hemoglobin response and the highest proportion no longer classified as anemic. Iron alone also improved the outcome, while vitamin A contributed a smaller component. [1]

    What it does not establish

    The trial concerned a specific nutritional and pregnancy setting. It does not establish that anemia always reflects both deficiencies, nor does it provide a universal prenatal dose. Funding and conflicts were not established from the abstract; individual deficiency treatment requires clinical assessment. [1]

    A hypothetical distinction

    Imagine two shortages coexist and replacing both works better than replacing one. That does not imply a person without the second shortage benefits from adding more of that nutrient.

    Evidence summary — Vitamin A and iron
    DetailInterpretation
    Four groupsNutrient contributions compared
    Specific anemia settingPopulation matters
    Universal prenatal regimenNot established
    Vitamin A and iron: a nutritional-anemia trial tested both nutrients — original article outline diagram
    Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

    Sources for this article

    1. Supplementation with vitamin A and iron for nutritional anaemia in pregnant women in West Java, Indonesia - PubMed
      Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.