{
  "name": "Magnesium glycinate supplement comparison dataset",
  "publisher": "Magnesium Glycinate Supplements",
  "url": "https://magnesiumglycinatesupplements.com/data/magnesium-glycinate-products.json",
  "as_of": "2026-11-10",
  "license": "CC BY 4.0 with attribution to Magnesium Glycinate Supplements",
  "ranking_status": "Provisional editorial order",
  "field_definitions": {
    "elemental_mg_per_serving": "Elemental magnesium in one labeled serving, in mg (not compound weight).",
    "total_elemental_mg": "Elemental magnesium in the whole container, in mg.",
    "label_max_daily_mg": "Elemental magnesium at the label's maximum daily directions. The NIH adult upper limit for supplemental magnesium is 350 mg/day.",
    "price_per_100mg_usd": "price_usd divided by (total_elemental_mg / 100).",
    "evidence_tier": "1 publicly verifiable product-specific evidence; 2 product-specific evidence verified privately by editors; 3 manufacturer-level or partial evidence; 4 unverified.",
    "as_of": "Date the price and label were observed."
  },
  "products": [
    {
      "rank": 1,
      "brand": "Nootropics Depot",
      "product": "Magnesium Glycinate Capsules",
      "package": "180 capsules",
      "form": "Magnesium bisglycinate chelate monohydrate",
      "format": "Capsule",
      "elemental_mg_per_serving": 200,
      "compound": "1,600 mg magnesium bisglycinate chelate",
      "serving": "2 capsules",
      "servings": 90,
      "total_elemental_mg": 18000,
      "label_max_daily_mg": 200,
      "price_usd": 27.99,
      "price_source": "nootropicsdepot.com",
      "price_per_100mg_usd": 0.16,
      "price_per_serving_usd": 0.31,
      "evidence_tier": 1,
      "evidence": "Lot-matched certificates of analysis on the product page",
      "document_url": "https://nootropicsdepot.com/magnesium-glycinate-capsules",
      "availability": "In stock",
      "reviews_snapshot": "19 reviews on the product page; no average displayed",
      "as_of": "2026-11-10",
      "source_url": "https://nootropicsdepot.com/magnesium-glycinate-capsules",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/nootropics-depot/"
    },
    {
      "rank": 2,
      "brand": "Momentous",
      "product": "Magnesium Bisglycinate",
      "package": "60 capsules",
      "form": "Magnesium bisglycinate",
      "format": "Capsule",
      "elemental_mg_per_serving": 200,
      "compound": "Not stated separately",
      "serving": "2 capsules",
      "servings": 30,
      "total_elemental_mg": 6000,
      "label_max_daily_mg": 200,
      "price_usd": 16.99,
      "price_source": "livemomentous.com",
      "price_per_100mg_usd": 0.28,
      "price_per_serving_usd": 0.57,
      "evidence_tier": 1,
      "evidence": "NSF Certified for Sport, listed in NSF's directory",
      "document_url": "https://www.nsfsport.com/certified-products/listing-detail.php?id=1808823",
      "availability": "One-time purchase backordered",
      "reviews_snapshot": "4.9 stars from 13 reviews on the product page",
      "as_of": "2026-11-10",
      "source_url": "https://www.livemomentous.com/products/magnesium-bisglycinate",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/momentous/"
    },
    {
      "rank": 3,
      "brand": "EO VITA",
      "product": "Magnesium Glycinate Capsules",
      "package": "90 capsules",
      "form": "Magnesium glycinate",
      "format": "Capsule",
      "elemental_mg_per_serving": 275,
      "compound": "2,500 mg magnesium glycinate",
      "serving": "3 capsules",
      "servings": 30,
      "total_elemental_mg": 8250,
      "label_max_daily_mg": 275,
      "price_usd": 25.0,
      "price_source": "eovita.io",
      "price_per_100mg_usd": 0.3,
      "price_per_serving_usd": 0.83,
      "evidence_tier": 2,
      "evidence": "Lot report reviewed privately by our editors",
      "document_url": null,
      "availability": "Available",
      "reviews_snapshot": "15 reviews on the product page; no average displayed",
      "as_of": "2026-11-10",
      "source_url": "https://eovita.io/products/magnesium-glycinate",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/eo-vita/"
    },
    {
      "rank": 4,
      "brand": "Thorne",
      "product": "Magnesium Bisglycinate Powder",
      "package": "60 scoops (187 g)",
      "form": "Magnesium bisglycinate (TRAACS)",
      "format": "Powder",
      "elemental_mg_per_serving": 200,
      "compound": "Not stated separately",
      "serving": "1 scoop",
      "servings": 60,
      "total_elemental_mg": 12000,
      "label_max_daily_mg": 200,
      "price_usd": 52.0,
      "price_source": "thorne.com",
      "price_per_100mg_usd": 0.43,
      "price_per_serving_usd": 0.87,
      "evidence_tier": 1,
      "evidence": "NSF Certified for Sport on this powder",
      "document_url": null,
      "availability": "Available",
      "reviews_snapshot": "No reviews displayed on the product page",
      "as_of": "2026-11-10",
      "source_url": "https://www.thorne.com/products/dp/magnesium-bisglycinate",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/thorne/"
    },
    {
      "rank": 5,
      "brand": "Transparent Labs",
      "product": "Magnesium Bisglycinate",
      "package": "90 capsules",
      "form": "Magnesium bisglycinate chelate",
      "format": "Capsule",
      "elemental_mg_per_serving": 300,
      "compound": "Not stated separately",
      "serving": "3 capsules",
      "servings": 30,
      "total_elemental_mg": 9000,
      "label_max_daily_mg": 300,
      "price_usd": 16.99,
      "price_source": "transparentlabs.com",
      "price_per_100mg_usd": 0.19,
      "price_per_serving_usd": 0.57,
      "evidence_tier": 1,
      "evidence": "Purity and ingredient reports linked on the product page",
      "document_url": "https://www.transparentlabs.com/products/magnesium-bisglycinate",
      "availability": "Sold out",
      "reviews_snapshot": "160 reviews on the product page; 4.8 average computed from the star breakdown",
      "as_of": "2026-11-10",
      "source_url": "https://www.transparentlabs.com/products/magnesium-bisglycinate",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/transparent-labs/"
    },
    {
      "rank": 6,
      "brand": "Pure Encapsulations",
      "product": "Magnesium (Glycinate)",
      "package": "180 capsules",
      "form": "Magnesium glycinate",
      "format": "Capsule",
      "elemental_mg_per_serving": 120,
      "compound": "Not stated separately",
      "serving": "1 capsule",
      "servings": 180,
      "total_elemental_mg": 21600,
      "label_max_daily_mg": 480,
      "price_usd": 44.6,
      "price_source": "Vitacost",
      "price_per_100mg_usd": 0.21,
      "price_per_serving_usd": 0.25,
      "evidence_tier": 3,
      "evidence": "Brand quality and allergen statements; no product test results found",
      "document_url": null,
      "availability": "Available",
      "reviews_snapshot": "Not captured; the brand page shows no reviews",
      "as_of": "2026-11-10",
      "source_url": "https://www.pureencapsulationspro.com/our-products/all-products/magnesium-glycinate.html",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/pure-encapsulations/"
    },
    {
      "rank": 7,
      "brand": "NOW Foods",
      "product": "Magnesium Glycinate Tablets",
      "package": "180 tablets",
      "form": "Magnesium bisglycinate (Albion)",
      "format": "Tablet",
      "elemental_mg_per_serving": 200,
      "compound": "2,000 mg magnesium bisglycinate",
      "serving": "2 tablets",
      "servings": 90,
      "total_elemental_mg": 18000,
      "label_max_daily_mg": 400,
      "price_usd": 19.59,
      "price_source": "Vitacost",
      "price_per_100mg_usd": 0.11,
      "price_per_serving_usd": 0.22,
      "evidence_tier": 3,
      "evidence": "GMP and in-house testing statements; no product test results found",
      "document_url": null,
      "availability": "Temporarily unavailable at Vitacost",
      "reviews_snapshot": "4.8 stars from 7,611 reviews on Vitacost",
      "as_of": "2026-11-10",
      "source_url": "https://www.nowfoods.com/products/supplements/magnesium-glycinate-tablets",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/now-foods/"
    },
    {
      "rank": 8,
      "brand": "Doctor's Best",
      "product": "High Absorption Magnesium",
      "package": "120 tablets",
      "form": "Magnesium lysinate glycinate chelate (Albion TRAACS)",
      "format": "Tablet",
      "elemental_mg_per_serving": 200,
      "compound": "2,000 mg magnesium lysinate glycinate chelate",
      "serving": "2 tablets",
      "servings": 60,
      "total_elemental_mg": 12000,
      "label_max_daily_mg": 400,
      "price_usd": 13.99,
      "price_source": "Vitacost",
      "price_per_100mg_usd": 0.12,
      "price_per_serving_usd": 0.23,
      "evidence_tier": 3,
      "evidence": "Branded Albion ingredient and GMP statements; no product test results found",
      "document_url": null,
      "availability": "Available",
      "reviews_snapshot": "Not captured from a brand or retailer page",
      "as_of": "2026-11-10",
      "source_url": "https://www.vitacost.com/products/doctor-s-best-high-absorption-magnesium-120-tablets-100-mg-per-tablet-15",
      "review_url": "https://magnesiumglycinatesupplements.com/brands/doctors-best/"
    }
  ]
}