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Dextromethorphan and an oxidase inhibitor for treating intractable conditions

Patent 5863927 Issued on January 26, 1999. Estimated Expiration Date: Icon_subject September 19, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Method and composition of reducing pain
Patent #: 4316888
Issued on: 02/23/1982
Inventor: Nelson

Method for enhancing the systemic delivery of dextromethorphan for the treatment of neurological disorders
Patent #: 5166207
Issued on: 11/24/1992
Inventor: Smith

Method for reducing emotional lability
Patent #: 5206248
Issued on: 04/27/1993
Inventor: Smith

Use of a cytochrome oxidase inhibitor to increase the cough-suppressing activity of dextromorphan
Patent #: 5350756
Issued on: 09/27/1994
Inventor: Smith

Method for the treatment of chronic pain
Patent #: 5352683
Issued on: 10/04/1994
Inventor: Mayer, et al.

Use of dextromethorphan and an oxidase inhibitor to treat dermatitis
Patent #: 5366980
Issued on: 11/22/1994
Inventor: Smith

Method for the treatment of pain Patent #: 5502058
Issued on: 03/26/1996
Inventor: Mayer, et al.

Inventors

Assignee

Application

No. 464792 filed on 09/19/1996

US Classes:

514/289, Two of the cyclos share at least three ring members (i.e., bridged) (e.g., morphinans, etc.)514/305, Quinuclidines (including unsaturation)514/491, With an additional active ingredient514/649, Amino nitrogen attached to aryl ring or aryl ring system by an acyclic carbon or acyclic chain514/651, Ether oxygen is part of the chain514/652, Alkanol group only between the amino nitrogen and an ether oxygen which is bonded directly to the aryl ring or aryl ring system (i.e., aryloxy alkanol amines)514/654The chain consists of two or more carbons which are unsubtituted or have acyclic hydrocarbyl substituents only

Examiners

Primary: Spivack, Phyllis G.

Attorney, Agent or Firm

International Classes

A61K 031/44
A61K 031/265
A61K 031/135

Abstract

Methods are disclosed for increasing the effectiveness of dextromethorphan in treating chronic or intractable pain, for treating tinnitus and for treating sexual dysfunction comprising administering dextromethorphan in combination with a therapeutically effective dosage of a debrisoquin hydroxylase inhibitor. A preferred combination is dextromethorphan and the oxidative inhibitor quinidine.

Other References

  • Dickenson, A.H., "A cure for wind up: NMDA receptor antagonists as potential analgesics," Trends in Pharm. Sci. 11: 307-309 (1990)
  • Dickenson, A.H., et al, "Dextromethorphan and levorphanol on dorsal horn nociceptive neurones in the rat," Neuropharmacology 30: 1303-1308 (1991)
  • France, C.P., et al. "Analgesic Effects of Phencyclidine-Like Drugs in Rhesus Monkeys," J. Pharmacol. Exp. Therapeutics 250: 197-201 (1989)
  • Mao, J., et al, "Intrathecal treatment with dextrorphan or ketamine potently reduces pain-related behaviors in a rat model of peripheral mononeuropathy," Brain Research 605: 164-168 (1993)
  • McCarthy, J.P., "Some less familiar drugs of abuse," Med. J. Australia 1971 (2): 1078-1081 (1971)
  • McQuay, H.J., et al, "Dextromethorphan for the treatment of neurophatic pain: a double-blind randomised controlled crossover trial with integral n-of-1 design," Pain 59: 127-133 (1994)
  • Tortella, F.C., et al, "Dextromethorphan and neuromodulation: old drug coughs up new activities," Trends in Pharm. Sci. 10: 501-507 (1989)
  • Zhang et al., "Dextromethorphan: Enhancing its Systemic Availability by Way of Low-dose Quinidine-mediated Inhibition of Cytochrome P4502D6," Clin. Pharm. ? Ther. 51(6) :647-655 (1992
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