{
  "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": "2026-10-02",
    "results": {
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  "results": [
    {
      "product_ndc": "22840-9493",
      "generic_name": "Betula lenta, Betula nigra and Betula populifolia",
      "labeler_name": "Greer Laboratories, Inc.",
      "brand_name": "Birch Pollen Mix",
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        {
          "name": "BETULA LENTA POLLEN",
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        },
        {
          "name": "BETULA NIGRA POLLEN",
          "strength": ".0166666 g/mL"
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        {
          "name": "BETULA POPULIFOLIA POLLEN",
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      "finished": true,
      "packaging": [
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          "description": "10 mL in 1 VIAL, MULTI-DOSE (22840-9493-2)",
          "marketing_start_date": "19810915",
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        },
        {
          "package_ndc": "22840-9493-4",
          "description": "50 mL in 1 VIAL, MULTI-DOSE (22840-9493-4)",
          "marketing_start_date": "19810915",
          "sample": false
        }
      ],
      "listing_expiration_date": "20261231",
      "openfda": {},
      "marketing_category": "BLA",
      "dosage_form": "SOLUTION",
      "spl_id": "36ac2d95-bfac-548b-e063-6394a90a749a",
      "product_type": "NON-STANDARDIZED ALLERGENIC",
      "route": [
        "INTRADERMAL",
        "PERCUTANEOUS",
        "SUBCUTANEOUS"
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      "marketing_start_date": "19810915",
      "product_id": "22840-9493_36ac2d95-bfac-548b-e063-6394a90a749a",
      "application_number": "BLA101833",
      "brand_name_base": "Birch Pollen Mix",
      "pharm_class": [
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        "Allergens [CS]",
        "Allergens [CS]",
        "Cell-mediated Immunity [PE]",
        "Cell-mediated Immunity [PE]",
        "Cell-mediated Immunity [PE]",
        "Increased Histamine Release [PE]",
        "Increased Histamine Release [PE]",
        "Increased Histamine Release [PE]",
        "Increased IgG Production [PE]",
        "Increased IgG Production [PE]",
        "Increased IgG Production [PE]",
        "Non-Standardized Pollen Allergenic Extract [EPC]",
        "Non-Standardized Pollen Allergenic Extract [EPC]",
        "Non-Standardized Pollen Allergenic Extract [EPC]",
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        "Pollen [CS]",
        "Pollen [CS]"
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}