{
  "name": "Magnesium Gummy Label Census and Cost per 300 mg",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "attribution": "Verified Supplement Data, https://verifiedsupplementdata.com/magnesium/gummies/",
  "dateModified": "2026-10-15",
  "methodology": "Labels were enumerated from the NIH Dietary Supplement Label Database by paging its ranked search for magnesium-gummy terms and keeping only labels whose filed physical state is Gummy or Jelly and whose Supplement Facts carry a magnesium row; labels sold as magnesium (magnesium in the product name, not multivitamin, calcium-magnesium, sleep or electrolyte gummies) were analysed. Magnesium per serving = the row named Magnesium for the Supplement Facts serving; a row named for the compound (e.g. Magnesium Citrate 600 mg) is never credited as the dose. Daily dose = 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. Cost per 300 mg = brand list price / (magnesium mg per serving x servings) x 300.",
  "labelCensus": {
    "source": "NIH Dietary Supplement Label Database",
    "sourceUrl": "https://dsld.od.nih.gov/",
    "retrievedOn": "2026-09-15",
    "onMarketMagnesiumLabelsAnyForm": 39884,
    "labelsRetrieved": 64,
    "labelsSoldAsMagnesium": 26,
    "excludedNotSoldAsMagnesium": 38,
    "labelsWithServingDose": 26,
    "brands": 20,
    "brandLines": 20,
    "medianElementalMgPerServing": 100,
    "medianElementalMgPerDay": 100,
    "p25ElementalMgPerDay": 84,
    "observedServingRangeMg": [
      70,
      250
    ],
    "under100MgPerDayPct": 32,
    "atLeast300MgPerDayPct": 0,
    "medianGummiesPerDay": 2,
    "threeOrMoreGummiesPerDayPct": 16,
    "saltDeclaredPct": 100,
    "saltShareOfDeclaringLabelsPct": {
      "citrate": 96.2,
      "glycinate": 3.8
    },
    "sugarsRowDeclaredPct": 96.2,
    "medianSugarsGramsPerDay": 3,
    "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": 19,
      "held": 13,
      "failed": [
        "p75 daily mg",
        "share at least 200 mg/day",
        "median mg per gummy",
        "oxide share of declared",
        "sugar-free share",
        "name-mg exceeds elemental row share"
      ]
    },
    "notPublished": [
      "p75 daily mg",
      "share at least 200 mg/day",
      "median mg per gummy",
      "oxide share of declared",
      "sugar-free share",
      "name-mg exceeds elemental row share"
    ]
  },
  "costPer300Mg": [
    {
      "name": "Nature Made Magnesium Glycinate 200mg",
      "kind": "capsule",
      "magnesiumMgPerServing": 200,
      "servingSize": "2 capsules",
      "servingsPerContainer": 30,
      "listPriceUsd": 21.99,
      "priceSource": "https://www.naturemade.com/products/high-absorption-magnesium-glycinate-200-mg-capsules",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 1.1,
      "costPer100MgUsd": 0.367,
      "testingLists": [
        "USP Verified"
      ],
      "nihDsldId": null,
      "availability": "ok"
    },
    {
      "name": "Nature Made Magnesium Glycinate Gummies 100 mg",
      "kind": "gummy",
      "magnesiumMgPerServing": 100,
      "servingSize": "2 gummies",
      "servingsPerContainer": 20,
      "listPriceUsd": 20.99,
      "priceSource": "https://www.naturemade.com/products/high-absorption-magnesium-glycinate-gummies",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 3.149,
      "costPer100MgUsd": 1.049,
      "testingLists": [
        "USP Verified"
      ],
      "nihDsldId": "313829",
      "availability": "ok"
    },
    {
      "name": "Vitamatic Magnesium Citrate Gummies 600 mg",
      "kind": "gummy",
      "magnesiumMgPerServing": 70,
      "servingSize": "2 gummies",
      "servingsPerContainer": 30,
      "listPriceUsd": 19.99,
      "priceSource": "https://vitamaticusa.com/products/magnesium-citrate-600mg-60-vegan-gummies",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 2.856,
      "costPer100MgUsd": 0.952,
      "testingLists": [],
      "nihDsldId": "283034",
      "availability": "ok"
    }
  ],
  "costPer100Mg": [
    {
      "name": "Nature Made Magnesium Glycinate 200mg",
      "kind": "capsule",
      "magnesiumMgPerServing": 200,
      "servingSize": "2 capsules",
      "servingsPerContainer": 30,
      "listPriceUsd": 21.99,
      "priceSource": "https://www.naturemade.com/products/high-absorption-magnesium-glycinate-200-mg-capsules",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 1.1,
      "costPer100MgUsd": 0.367,
      "testingLists": [
        "USP Verified"
      ],
      "nihDsldId": null,
      "availability": "ok",
      "brand": "Nature Made",
      "salt": null,
      "elementalMgPerServing": 200,
      "priceUsd": 21.99,
      "priceVerifiedOn": "2026-10-14"
    },
    {
      "name": "Nature Made Magnesium Glycinate Gummies 100 mg",
      "kind": "gummy",
      "magnesiumMgPerServing": 100,
      "servingSize": "2 gummies",
      "servingsPerContainer": 20,
      "listPriceUsd": 20.99,
      "priceSource": "https://www.naturemade.com/products/high-absorption-magnesium-glycinate-gummies",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 3.149,
      "costPer100MgUsd": 1.049,
      "testingLists": [
        "USP Verified"
      ],
      "nihDsldId": "313829",
      "availability": "ok",
      "brand": "Nature Made",
      "salt": "bisglycinate, gummy",
      "elementalMgPerServing": 100,
      "priceUsd": 20.99,
      "priceVerifiedOn": "2026-10-14"
    },
    {
      "name": "Vitamatic Magnesium Citrate Gummies 600 mg",
      "kind": "gummy",
      "magnesiumMgPerServing": 70,
      "servingSize": "2 gummies",
      "servingsPerContainer": 30,
      "listPriceUsd": 19.99,
      "priceSource": "https://vitamaticusa.com/products/magnesium-citrate-600mg-60-vegan-gummies",
      "priceCheckedOn": "2026-10-14",
      "costPer300MgUsd": 2.856,
      "costPer100MgUsd": 0.952,
      "testingLists": [],
      "nihDsldId": "283034",
      "availability": "ok",
      "brand": "Vitamatic",
      "salt": "citrate, gummy",
      "elementalMgPerServing": 70,
      "priceUsd": 19.99,
      "priceVerifiedOn": "2026-10-14"
    }
  ]
}