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Determination That THORAZINE (Chlorpromazine Hydrochloride) Injection and 18 Other Drug Products Were Not Withdrawn From Sale for Reasons of Safety or Effectiveness

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Food and Drug Administration, HHS.




The Food and Drug Administration (FDA) has determined that the 19 drug products listed in this document were not withdrawn from sale for reasons of safety or effectiveness. This determination means that FDA will not begin procedures to withdraw approval of abbreviated new drug applications (ANDAs) that refer to these drug products, and it will allow FDA to continue to approve ANDAs that refer to the products as long as they meet relevant legal and regulatory requirements.

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Olivia Pritzlaff, Center for Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 51, rm. 6308, Silver Spring, MD 20993-0002, 301-796-3601.

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In 1984, Congress enacted the Drug Price Competition and Patent Term Restoration Act of 1984 (Public Law 98-417) (the 1984 amendments), which authorized the approval of duplicate versions of drug products approved under an ANDA procedure. ANDA sponsors must, with certain exceptions, show that the drug for which they are seeking approval contains the same active ingredient in the same strength and dosage form as the “listed drug,” which is a version of the drug that was previously approved. Sponsors of ANDAs do not have to repeat the extensive clinical testing otherwise necessary to gain approval of a new drug application (NDA). The only clinical data required in an ANDA are data to show that the drug that is the subject of the ANDA is bioequivalent to the listed drug.

The 1984 amendments include what is now section 505(j)(7) of the Federal Food, Drug, and Cosmetic Act (the act) (21 U.S.C. 355(j)(7)), which requires FDA to publish a list of all approved drugs. FDA publishes this list as part of the “Approved Drug Products With Therapeutic Equivalence Evaluations,” which is generally known as the “Orange Book.” Under FDA regulations, a drug is withdrawn from the list if the agency withdraws or suspends approval of the drug's NDA or ANDA for reasons of safety or effectiveness, or if FDA determines that the listed drug was withdrawn from sale for reasons of safety or effectiveness (21 CFR 314.162).

Under § 314.161(a) (21 CFR 314.161(a)), the agency must determine whether a listed drug was withdrawn from sale for reasons of safety or effectiveness: (1) Before an ANDA that refers to that listed drug may be approved; (2) whenever a listed drug is voluntarily withdrawn from sale and ANDAs that refer to the listed drug have been approved; and (3) when a person petitions for such a determination under 21 CFR 10.25(a) and 10.30. Section 314.161(d) provides that if FDA determines that a listed drug was withdrawn from sale for reasons of safety or effectiveness, the agency will initiate proceedings that could result in the withdrawal of approval of the ANDAs that refer to the listed drug.

FDA has become aware that the drug products listed in the table in this document are no longer being marketed. (As requested by the applicants, FDA withdrew approval of NDA 20-225 for IMDUR (isosorbide mononitrate) Extended-Release Tablets in the Federal Register of February 11, 2009 (74 FR 6896) and NDA 11-556 for ANTURANE (sulfinpyrazone) Tablets and Capsules, NDA 15-500 for TOLINASE (tolazamide) Tablets, NDA 18-285 for VISKEN (pindolol) Tablets, NDA 20-137 for DEMADEX (torsemide) Injection, and NDA 20-154 for VIDEX (didanosine) Chewable Tablets in the Federal Register of May 19, 2009 (74 FR 23407)).

Application No.DrugApplicant
NDA 9-149THORAZINE (chlorpromazine hydrochloride (HCI)) Injection, 25 milligrams (mg)/milliliter (mL)GlaxoSmithKline, 2301 Renaissance Blvd., King of Prussia, PA 19406
NDA 9-149THORAZINE (chlorpromazine HCl) Oral Concentrate, 30 mg/mL and 100 mg/mLDo.
NDA 9-149THORAZINE (chlorpromazine HCl) Oral Syrup, 10 mg/5 mLDo.
NDA 9-149THORAZINE (chlorpromazine) Suppositories, 25 mg and 100 mgDo.
NDA 11-552STELAZINE (trifluoperazine HCl) Tablets, Equivalent to (EQ) 1 mg base, EQ 2 mg base, EQ 5 mg base, and EQ 10 mg baseDo.
NDA 11-556ANTURANE (sulfinpyrazone) Tablet, 100 mgNovartis Pharmaceuticals Corp., One Health Plaza, East Hanover, NJ 07963
NDA 11-556ANTURANE (sulfinpyrazone) Capsule, 200 mgDo.
NDA 12-940ISORDIL (isosorbide dinitrate) Sublingual Tablets, 2.5 mg, 5 mg, and 10 mgBiovail Pharmaceuticals, Inc., 700 Route 202-206 North, Bridgewater, NJ 08807-0980
NDA 15-500TOLINASE (tolazamide) Tablets, 100 mg, 250 mg, and 500 mgPfifzer, Inc., 235 East 42d St., New York, NY 10017
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NDA 18-154LONITEN (minoxidil) Tablets, 2.5 mg and 10 mgPharmacia & Upjohn Co., c/o Pfizer, Inc.
NDA 18-285VISKEN (pindolol) Tablets, 5 mg and 10 mgNovartis Pharmaceuticals Corp.
NDA 18-445DOLOBID (diflunisal) Tablets, 250 mg and 500 mgMerck & Co., Inc., Sunneytown Pike, P.O. Box 4, BLA-20, West Point, PA 19486
NDA 19-661CYTOVENE IV (ganciclovir sodium) Injection, EQ 500 mg base/vialRoche Laboratories, Inc., 340 Kingsland St., Nutley, NJ 07110-1199
NDA 20-027CARDIZEM (diltiazem HCl) Injection, 5 mg/mL and 25 mg/vialBiovail Pharmaecuticals, Inc.
NDA 20-137DEMADEX (torsemide) Injection, 20 mg/2 mL (10 mg/mL) and 50 mg/5 mL (10 mg/mL)Roche Laboratories, Inc.
NDA 20-154VIDEX (didanosine) Chewable Tablets, 25 mg, 50 mg, 100 mg, 150 mg, and 200 mgBristol-Myers Squibb Co., P.O. Box 5100, Wallingford, CT 06492-7660
NDA 20-225IMDUR (isosorbide mononitrate) Extended-Release Tablets, 30 mg, 60 mg, and 120 mgSchering Corp., 2000 Galloping Hill Rd., Kenilworth, NJ 07033
NDA 21-238KYTRIL (granisetron HCl) Oral Solution, EQ 2 mg base/10 mLRoche Laboratories, Inc.
NDA 21-301LEVOXYL (levothyroxine sodium) Tablet, 0.3 mgKing Pharmaceuticals, Inc., 501 Fifth St., Bristol, TN 37620

FDA has reviewed its records and, under § 314.161, has determined that the drug products listed in this document were not withdrawn from sale for reasons of safety or effectiveness. Accordingly, the agency will continue to list the drug products listed in this document in the “Discontinued Drug Product List” section of the Orange Book. The “Discontinued Drug Product List” identifies, among other items, drug products that have been discontinued from marketing for reasons other than safety or effectiveness.

Approved ANDAs that refer to the NDAs listed in this document are unaffected by the discontinued marketing of the products subject to those NDAs. Additional ANDAs that refer to these products may also be approved by the agency if they comply with relevant legal and regulatory requirements. If FDA determines that labeling for these drug products should be revised to meet current standards, the agency will advise ANDA applicants to submit such labeling.

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Dated: June 5, 2009.

Jeffrey Shuren,

Associate Commissioner for Policy and Planning.

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[FR Doc. E9-14000 Filed 6-12-09; 8:45 am]