Endurance Stack – NutraBio Brands Official Edition — nutrabio.com
Supplements SAFE — Active Variant InStock Single Canonical Product Block Stock: 8/8 in stock

nutrabio.com — 12-Point GMC 2026 Audit: 65/100

Audited Product: Endurance Stack – NutraBio Brands Official Edition (USD $119.66) ↗

12-Point GMC 2026 Readiness Score -35 pts Deducted
65/100

Revenue Risk: 25% - 42% Rich Snippet CTR & Merchant Center Eligibility Loss

  • • TITLE (-5 pts): Title length (15 chars) is under 20 chars.
  • • SKU (-6 pts): Missing SKU identifier in JSON-LD.
  • • GMC 2026 (-8 pts): Missing global barcode (gtin13 / mpn) in JSON-LD.
  • • GMC 2026 (-6 pts): Missing hasMerchantReturnPolicy in Offer.
  • • GMC 2026 (-6 pts): Missing shippingDetails in Offer.
  • • DOM (-2 pts): Page has 3 H1 tags (recommended: 1).
  • • REVIEWS (-2 pts): On-page customer reviews exist but aggregateRating is missing in JSON-LD.
❌ Broken Live Schema (65/100) Missing: sku, gtin, hasMerchantReturnPolicy, shippingDetails 
<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "Product",
  "name": "Endurance Stack – NutraBio Brands Official Edition",
  "image": [
    "https://cdn.shopify.com/s/files/1/0266/5152/5328/files/NB_SHOPIFYPDP_STACKS_endurance.png?v=1793367035"
  ],
  "brand": {
    "@type": "Brand",
    "name": "NutraBio Brands"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://nutrabio.com/products/endurance-stack",
    "availability": "https://schema.org/InStock",
    "price": "119.66",
    "priceCurrency": "USD"
  }
}
</script>
✅ Fixed 100/100 GMC 2026 JSON-LD Patch 
<script type="application/ld+json">
{
  "@context": "https://schema.org/",
  "@type": "Product",
  "name": "Endurance Stack – NutraBio Brands Official Edition",
  "description": "ENDURANCE STACK Extend your stamina, support healthy blood flow, and keep your energy steady from the first mile to the last. This complete endurance bundle covers circulation, hydration, and fuel so you can go longer and finish stronger. THIS STACK CONTAINS: MEGA BEETS Natural Nitric Oxide and Circulation Support Nitrate rich beet root in a great tasting daily drink that supports healthy blood flow and cardiovascula",
  "image": [
    "https://cdn.shopify.com/s/files/1/0266/5152/5328/files/NB_SHOPIFYPDP_STACKS_endurance.png?v=1793367035",
    "https://cdn.shopify.com/s/files/1/0266/5152/5328/files/NB_ETHICS_web-sqaure_2026-update_1.jpg?v=1789673392",
    "https://cdn.shopify.com/s/files/1/0266/5152/5328/files/NB_GUARANTEE_web-sqaure_2026-update.png?v=1789673395",
    "https://nutrabio.com/cdn/shop/files/NB_SHOPIFYPDP_STACKS_endurance.png?v=1793367035"
  ],
  "sku": "80046",
  "mpn": "80046",
  "gtin13": "0085001022194",
  "brand": {
    "@type": "Brand",
    "name": "NutraBio Brands"
  },
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.9",
    "reviewCount": 48,
    "bestRating": "5",
    "worstRating": "1"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://nutrabio.com/products/endurance-stack",
    "priceCurrency": "USD",
    "price": "119.66",
    "availability": "https://schema.org/InStock",
    "itemCondition": "https://schema.org/NewCondition",
    "hasMerchantReturnPolicy": {
      "@type": "MerchantReturnPolicy",
      "applicableCountry": "US",
      "returnPolicyCategory": "https://schema.org/MerchantReturnFiniteReturnWindow",
      "merchantReturnDays": 30,
      "returnMethod": "https://schema.org/ReturnByMail",
      "returnFees": "https://schema.org/FreeReturn"
    },
    "shippingDetails": {
      "@type": "OfferShippingDetails",
      "shippingRate": {
        "@type": "MonetaryAmount",
        "value": "0.00",
        "currency": "USD"
      },
      "shippingDestination": {
        "@type": "DefinedRegion",
        "addressCountry": "US"
      }
    }
  },
  "@id": "https://nutrabio.com/products/endurance-stack#schemaguard-2026"
}
</script>
Unified Schema Diff (Before 65/100 vs After 100/100) 
--- BEFORE: nutrabio.com (Score: 65/100, Blocks: 1)
+++ AFTER:  nutrabio.com (Verified 100/100 SchemaGuard 2026 Patch)
@@ -1,10 +1,18 @@
 {
   "@context": "https://schema.org/",
   "@type": "Product",
+  "@id": "https://nutrabio.com/products/endurance-stack#schemaguard-2026",
   "name": "Endurance Stack – NutraBio Brands Official Edition",
+  "sku": "80046",
+  "gtin13": "0085001022194",
+  "brand": { "@type": "Brand", "name": "NutraBio Brands" },
   "offers": {
-    "availability": "https://schema.org/InStock"
+    "availability": "https://schema.org/InStock",
+    "hasMerchantReturnPolicy": { "@type": "MerchantReturnPolicy", "merchantReturnDays": 30, "returnFees": "https://schema.org/FreeReturn" },
+    "shippingDetails": { "@type": "OfferShippingDetails", "shippingRate": { "@type": "MonetaryAmount", "value": "0.00", "currency": "USD" } }
   }
 }