{
  "category": "magnesium-glycinate",
  "supplementForm": "Magnesium Glycinate (Bisglycinate)",
  "clinicalDose": "320-400mg elemental magnesium per day",
  "primaryConditions": [
    "sleep",
    "anxiety",
    "muscle cramps",
    "general deficiency"
  ],
  "evidenceSummary": {
    "sleep": "Systematic review of 7 RCTs (n=735): significant improvement in subjective sleep quality at 320-500mg/day. Glycine component has independent calming properties.",
    "anxiety": "Systematic review of 18 studies: benefit in anxiety-vulnerable populations. RCT: GAD-7 reduction of 4.5 points (P<0.001) at 248mg/day within 2 weeks.",
    "muscleCramps": "Cochrane review of 11 trials: unlikely to help general cramps. One 2021 RCT (n=175): significant benefit for nocturnal leg cramps (P=0.01)."
  },
  "costCalculation": {
    "formula": "(price / servingsPerContainer) * (clinicalDose / mgPerServing)",
    "clinicalDoseMg": 400,
    "unit": "USD per day"
  },
  "products": [
    {
      "name": "BulkSupplements Magnesium Glycinate Powder",
      "brand": "BulkSupplements.com",
      "slug": "bulksupplements-magnesium-glycinate",
      "elementalMgPerServing": 225,
      "servingSize": "1250 mg powder (~1/2 tsp)",
      "servingsPerContainer": 200,
      "price": 19.96,
      "costPerEffectiveDailyDose": 0.18,
      "certification": "None",
      "nihDsldId": "310750",
      "amazonAsin": "B00F7OZJQE",
      "editorialPick": "budget",
      "purchaseUrl": "https://www.amazon.com/dp/B00F7OZJQE?tag=verifiedsupp2-20"
    },
    {
      "name": "Vitamin Shoppe Magnesium Glycinate 400mg",
      "brand": "The Vitamin Shoppe",
      "slug": "vitamin-shoppe-magnesium-glycinate",
      "elementalMgPerServing": 400,
      "servingSize": "2 tablets",
      "servingsPerContainer": 90,
      "price": 21.99,
      "costPerEffectiveDailyDose": 0.24,
      "certification": "None",
      "nihDsldId": "208724",
      "amazonAsin": "B0DZLYHSVN",
      "editorialPick": "best-value",
      "purchaseUrl": "https://www.amazon.com/dp/B0DZLYHSVN?tag=verifiedsupp2-20"
    },
    {
      "name": "Nature Made Magnesium Glycinate 200mg",
      "brand": "Nature Made",
      "slug": "nature-made-magnesium-glycinate",
      "elementalMgPerServing": 200,
      "servingSize": "1 capsule",
      "servingsPerContainer": 60,
      "price": 13.99,
      "costPerEffectiveDailyDose": 0.47,
      "certification": "USP Verified",
      "nihDsldId": null,
      "amazonAsin": "B08XXHCGZT",
      "editorialPick": "quality",
      "purchaseUrl": "https://www.amazon.com/dp/B08XXHCGZT?tag=verifiedsupp2-20"
    },
    {
      "name": "Doctor's Best High Absorption Magnesium",
      "brand": "Doctor's Best",
      "slug": "doctors-best-magnesium",
      "elementalMgPerServing": 200,
      "servingSize": "2 tablets",
      "servingsPerContainer": 60,
      "price": 15.29,
      "costPerEffectiveDailyDose": 0.51,
      "certification": "None",
      "nihDsldId": null,
      "amazonAsin": "B00151G8L8",
      "editorialPick": null,
      "purchaseUrl": "https://www.amazon.com/dp/B00151G8L8?tag=verifiedsupp2-20"
    },
    {
      "name": "KAL Magnesium Glycinate 400",
      "brand": "KAL",
      "slug": "kal-magnesium-glycinate-400",
      "elementalMgPerServing": 400,
      "servingSize": "2 tablets",
      "servingsPerContainer": 45,
      "price": 27.99,
      "costPerEffectiveDailyDose": 0.62,
      "certification": "None",
      "nihDsldId": "253226",
      "amazonAsin": "B0779GFZSG",
      "editorialPick": null,
      "purchaseUrl": "https://www.amazon.com/dp/B0779GFZSG?tag=verifiedsupp2-20"
    },
    {
      "name": "Thorne Magnesium Bisglycinate",
      "brand": "Thorne",
      "slug": "thorne-magnesium-bisglycinate",
      "elementalMgPerServing": 200,
      "servingSize": "1 capsule",
      "servingsPerContainer": 60,
      "price": 25.99,
      "costPerEffectiveDailyDose": 0.87,
      "certification": "NSF Certified for Sport",
      "nihDsldId": null,
      "amazonAsin": "B0F5XYHRPV",
      "editorialPick": null,
      "purchaseUrl": "https://www.amazon.com/dp/B0F5XYHRPV?tag=verifiedsupp2-20"
    }
  ],
  "dataSources": {
    "productLabels": "NIH Dietary Supplement Label Database (DSLD) — https://dsld.od.nih.gov/",
    "clinicalEvidence": "PubMed / NCBI — https://pubmed.ncbi.nlm.nih.gov/",
    "qualityCertification": [
      "NSF International",
      "USP Verification Program"
    ],
    "pricing": "Amazon retail pricing (current as of data refresh)"
  },
  "lastUpdated": "2026-03-15",
  "license": "CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/",
  "source": "https://verifiedsupplementdata.com"
}