Zanaflex

{
  "unii": {
    "unii": "B53E3NMY5C",
    "rxcui": "236460",
    "inchikey": "ZWUKMNZJRDGCTQ-UHFFFAOYSA-N",
    "display_name": "TIZANIDINE HYDROCHLORIDE",
    "substance_type": "chemical",
    "ingredient_type": "INGREDIENT SUBSTANCE"
  },
  "route": "ORAL",
  "spl_meta": {
    "60c27d35-7349-4fc6-86ad-70fffdbe3e08": {
      "match": "brand_token",
      "title": "ZANAFLEX (TIZANIDINE HYDROCHLORIDE) CAPSULE ZANAFLEX (TIZANIDINE HYDROCHLORIDE) TABLET [LEGACY PHARMA USA, INC.]",
      "spl_version": "2",
      "published_date": "2026-01-05"
    }
  },
  "productid": "70515-594_3468e009-cfd1-f217-e063-6294a90a1429",
  "productndc": "70515-594",
  "dosage_form": "TABLET",
  "orange_book": {
    "appl_no": "020397",
    "products": [
      {
        "rs": true,
        "rld": true,
        "te_code": "AB",
        "strength": "EQ 4MG BASE",
        "product_no": "001",
        "approval_date": "Nov 27, 1996"
      },
      {
        "rs": false,
        "rld": true,
        "te_code": null,
        "strength": "EQ 2MG BASE **Federal Register determination that product was not discontinued or withdrawn for safety or effectiveness reasons**",
        "product_no": "002",
        "approval_date": "Feb 4, 2000"
      }
    ],
    "appl_type": "N"
  },
  "dea_schedule": null,
  "product_type": "HUMAN PRESCRIPTION DRUG",
  "substance_name": "TIZANIDINE HYDROCHLORIDE",
  "proprietary_name": "Zanaflex",
  "active_ingred_unit": "mg/1",
  "application_number": "NDA020397",
  "marketing_category": "NDA",
  "nonproprietary_name": "tizanidine hydrochloride",
  "start_marketing_date": "20180801",
  "active_numerator_strength": "4"
}