{
  "meta": {
    "disclaimer": "Do not rely on openFDA to make decisions regarding medical care. While we make every effort to ensure that data is accurate, you should assume all results are unvalidated. We may limit or otherwise restrict your access to the API in line with our Terms of Service.",
    "terms": "https://open.fda.gov/terms/",
    "license": "https://open.fda.gov/license/",
    "last_updated": "2026-06-02",
    "results": {
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  "results": [
    {
      "spl_product_data_elements": [
        "Magnesium Oxide Magnesium Oxide CROSCARMELLOSE SODIUM CELLULOSE, MICROCRYSTALLINE SILICON DIOXIDE STEARIC ACID MAGNESIUM OXIDE MAGNESIUM CATION 120"
      ],
      "spl_unclassified_section": [
        "Drug Facts"
      ],
      "active_ingredient": [
        "Active ingredient Magnesium Oxide 400 mg (241.3 mg Elemental Magnesium)"
      ],
      "purpose": [
        "Purpose Antacid"
      ],
      "indications_and_usage": [
        "Use relieves: ■ acid indigestion ■ upset stomach"
      ],
      "warnings": [
        "Warnings Ask a doctor before use if you have kidney disease you are taking a prescription drug (antacids may interact with certain prescription drugs) you are pregnant or breast feeding. Do not take more than 2 tablets in a 24 hour period. May have a laxative effect. Keep out of reach of children."
      ],
      "ask_doctor": [
        "Ask a doctor before use if you have kidney disease you are taking a prescription drug (antacids may interact with certain prescription drugs) you are pregnant or breast feeding. Do not take more than 2 tablets in a 24 hour period. May have a laxative effect."
      ],
      "keep_out_of_reach_of_children": [
        "Keep out of reach of children."
      ],
      "dosage_and_administration": [
        "Directions take one or two antacid tablets daily. Do not exceed two tablets unless directed by a physician."
      ],
      "storage_and_handling": [
        "Other information Store at controlled room temperature 15° to 30°C (59° to 86°F). Tamper evident, do not use if imprinted safety seal under cap is broken or missing."
      ],
      "inactive_ingredient": [
        "Inactive ingredients Croscarmellose Sodium, Microcrystalline Cellulose, Silicon Dioxide, and Stearic Acid."
      ],
      "questions": [
        "Questions? Call Method at 1-877-250-3427 or FDA at 1-800-FDA-1088 Manufactured for: Method Pharmaceuticals, LLC Fort Worth, Texas 76118 Rev. 04/18"
      ],
      "package_label_principal_display_panel": [
        "Principal Display Panel NDC 58657-120-12 Magnesium Oxide 400 mg 241.3 Elemental Magnesium Antacid 120 Tablets label"
      ],
      "set_id": "0af63651-f9d9-43b9-b6f0-4878466a82e6",
      "id": "41b54dc8-16af-7ea0-e063-6394a90ad7b2",
      "effective_time": "20251021",
      "version": "7",
      "openfda": {
        "application_number": [
          "M001"
        ],
        "brand_name": [
          "Magnesium Oxide"
        ],
        "generic_name": [
          "MAGNESIUM OXIDE"
        ],
        "manufacturer_name": [
          "Method Pharmaceuticals, LLC"
        ],
        "product_ndc": [
          "58657-120"
        ],
        "product_type": [
          "HUMAN OTC DRUG"
        ],
        "route": [
          "ORAL"
        ],
        "substance_name": [
          "MAGNESIUM OXIDE"
        ],
        "rxcui": [
          "198741"
        ],
        "spl_id": [
          "41b54dc8-16af-7ea0-e063-6394a90ad7b2"
        ],
        "spl_set_id": [
          "0af63651-f9d9-43b9-b6f0-4878466a82e6"
        ],
        "package_ndc": [
          "58657-120-12"
        ],
        "is_original_packager": [
          true
        ],
        "unii": [
          "3A3U0GI71G"
        ]
      }
    }
  ]
}