{
  "name": "Iron Gummy Label Census, Listing Census and Cost per 18 mg",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Verified Supplement Data, https://verifiedsupplementdata.com/iron/gummies/",
  "dateModified": "2026-09-21",
  "methodology": "Labels were enumerated from the NIH Dietary Supplement Label Database by paging its ranked search for iron gummy terms and keeping only labels whose filed physical state is Gummy or Jelly and whose Supplement Facts carry an iron row; labels sold as iron (not prenatal, multivitamin or other-ingredient gummies) were analysed. Elemental iron per serving = the row named Iron for the Supplement Facts serving (a row named for a salt is never credited); daily = per-serving x maximum daily servings. Every figure was recomputed in two halves split by label-id parity; figures that did not agree within 8 points (shares) or 25% (medians) are not published. Listing census: first three Amazon result pages for eight queries, deduplicated by ASIN, regex over title and bullets, split by ASIN parity. Cost per 18 mg = Amazon price / (elemental mg per serving x servings) x 18 (the RDA for menstruating women).",
  "labelCensus": {
    "source": "NIH Dietary Supplement Label Database",
    "sourceUrl": "https://dsld.od.nih.gov/",
    "retrievedOn": "2026-09-21",
    "onMarketIronLabelsAnyForm": 13636,
    "labelsRetrieved": 45,
    "labelsSoldAsIron": 15,
    "excludedNotSoldAsIron": 30,
    "labelsWithServingDose": 15,
    "brands": 15,
    "medianElementalMgPerServing": 10,
    "medianElementalMgPerDay": 10,
    "p25ElementalMgPerDay": 8,
    "observedServingRangeMg": [
      4,
      20
    ],
    "atLeast18MgPerServingPct": 20,
    "atLeast27MgPerServingPct": 0,
    "sugarsRowDeclaredPct": 100,
    "sugarFreePct": 0,
    "children4PlusDvGroupPct": 46.7,
    "ferrousSulfatePct": 0,
    "fdaOverdoseWarningLabels": 14,
    "validation": {
      "method": "split-half by DSLD label-id parity (the harvest pooled two populations - an earlier shelf read and a format search - so read order is not a random split)",
      "checked": 24,
      "held": 9,
      "failed": [
        "p75 daily mg",
        "median mg per gummy",
        "share at least 10 mg per serving",
        "share below 10 mg per serving",
        "share at least 18 mg per day",
        "median gummies per day",
        "share directing 3+ gummies/day",
        "form or brand declared share",
        "median sugars g/day (declaring)",
        "kids-line share",
        "accidental-overdose warning stated share",
        "bisglycinate share",
        "ferrous fumarate share",
        "ferric / pyrophosphate share",
        "vitamin C paired share"
      ]
    },
    "notPublished": [
      "p75 daily mg",
      "median mg per gummy",
      "share at least 10 mg per serving",
      "share below 10 mg per serving",
      "share at least 18 mg per day",
      "median gummies per day",
      "share directing 3+ gummies/day",
      "form or brand declared share",
      "median sugars g/day (declaring)",
      "kids-line share",
      "accidental-overdose warning stated share",
      "bisglycinate share",
      "ferrous fumarate share",
      "ferric / pyrophosphate share",
      "vitamin C paired share"
    ]
  },
  "listingCensus": {
    "source": "Amazon.com search results via the Creators API (listing title + feature bullets)",
    "retrievedOn": "2026-09-21",
    "queries": [
      "iron gummies",
      "iron gummies for adults",
      "iron gummies for kids",
      "iron gummies for women",
      "iron with vitamin c gummies",
      "iron bisglycinate gummies",
      "iron supplement gummies",
      "iron gummies for anemia"
    ],
    "listings": 66,
    "brands": 51,
    "vitaminCAddedPct": 86.4,
    "bisglycinatePct": 22.7,
    "ferricPct": 3,
    "childWarningMentionedPct": 1.5,
    "sugarFreePct": 27.3,
    "kidsLinePct": 50,
    "b12OrFolateAddedPct": 48.5,
    "thirdPartyClaimPct": 12.1,
    "statesIronMgPct": 62.1,
    "medianDeclaredMg": 25,
    "amongDeclaringAtLeast18MgPct": 80.5,
    "medianGummiesPerServing": 2,
    "medianCount": 60,
    "medianPriceUsd": 19.99,
    "validation": {
      "method": "split-half by ASIN last-character parity; shares within 8 points, medians within 25%",
      "checked": 21,
      "held": 16,
      "failed": [
        "ferrous_fumarate_pct",
        "for_women_line_pct",
        "gentle_claim_pct",
        "multi_blend_pct",
        "two_plus_gummies_pct"
      ]
    },
    "notPublished": [
      "ferrous_fumarate_pct",
      "for_women_line_pct",
      "gentle_claim_pct",
      "multi_blend_pct",
      "two_plus_gummies_pct"
    ]
  },
  "costPer18Mg": [
    {
      "name": "Vitamatic Vegan Iron 20 mg with Vitamin C Gummies (60 gummies)",
      "brand": "Vitamatic",
      "kind": "gummy",
      "form": "ferrous fumarate + vitamin C",
      "elementalMgPerServing": 20,
      "servingSize": "2 gummies",
      "servingsPerContainer": 30,
      "priceUsd": 9.99,
      "priceVerifiedOn": "2026-09-21",
      "costPer18MgUsd": 0.3,
      "nihDsldId": "283030",
      "availability": "ok"
    },
    {
      "name": "Nature Made Iron 18 mg Gummies with Vitamin C (60 gummies)",
      "brand": "Nature Made",
      "kind": "gummy",
      "form": "form not stated on listing",
      "elementalMgPerServing": 18,
      "servingSize": "2 gummies",
      "servingsPerContainer": 30,
      "priceUsd": 14.99,
      "priceVerifiedOn": "2026-09-21",
      "costPer18MgUsd": 0.5,
      "nihDsldId": null,
      "availability": "ok"
    },
    {
      "name": "Lifeable Iron Gummies 20 mg with Vitamin C (90 gummies)",
      "brand": "Lifeable",
      "kind": "gummy",
      "form": "ferric pyrophosphate + vitamin C (label)",
      "elementalMgPerServing": 20,
      "servingSize": "2 gummies",
      "servingsPerContainer": 45,
      "priceUsd": 19.99,
      "priceVerifiedOn": "2026-09-21",
      "costPer18MgUsd": 0.4,
      "nihDsldId": "313369",
      "availability": "ok"
    },
    {
      "name": "Lifeable Kids Iron Gummies 10 mg with Vitamin C (90 gummies)",
      "brand": "Lifeable",
      "kind": "gummy",
      "form": "ferric pyrophosphate + vitamin C (label)",
      "elementalMgPerServing": 10,
      "servingSize": "2 gummies",
      "servingsPerContainer": 45,
      "priceUsd": 18.49,
      "priceVerifiedOn": "2026-09-21",
      "costPer18MgUsd": 0.74,
      "nihDsldId": "313370",
      "availability": "ok"
    },
    {
      "name": "NOW Foods Iron 36 mg Double Strength (Ferrochel)",
      "brand": "NOW Foods",
      "kind": "capsule",
      "elementalMgPerServing": 36,
      "servingSize": "1 capsule",
      "servingsPerContainer": 90,
      "priceUsd": 9.57,
      "priceVerifiedOn": "2026-09-20",
      "costPer18MgUsd": 0.053,
      "nihDsldId": null,
      "availability": "ok"
    }
  ]
}