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Intravaginal treatment of vaginal infections with buffered metronidazole compositions

Patent 5840744 Issued on November 24, 1998. Estimated Expiration Date: Icon_subject July 15, 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

Pharmaceutical insertion compositions and a process for producing the same
Patent #: 4472376
Issued on: 09/18/1984
Inventor: Kamishita

Topical metronidazole formulations and therapeutic uses thereof
Patent #: 4837378
Issued on: 06/06/1989
Inventor: Borgman

Vaginal delivery system Patent #: 5266329
Issued on: 11/30/1993
Inventor: Riley, Jr.

Inventor

Assignee

Application

No. 680750 filed on 07/15/1996

US Classes:

514/398, Chalcogen or nitrogen bonded directly to the imidazole ring by nonionic bonding514/944, GEL514/967VAGINAL

Examiners

Primary: Jordan, Kimberly

Attorney, Agent or Firm

Foreign Patent References

  • 80363 RO. 11/13/1982
  • 82399 RO. 09/13/1983
  • 91013 RO. 05/13/1992

International Class

A61K 031/415

Abstract

A non-flowing composition and method for treatment of bacterial vaginosis are disclosed. An afflicted vagina is treated with a therapeutically effective but relatively low dose of metronidazole in a composition that includes a buffer system maintaining the composition at a pH value in the range of about 3.75 to about 4.25. The composition can also be used for prophylactic purposes.

Other References

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  • Balsdon M.J. et al., "Corynebacterium vaginale and vaginitis: a controlled trial of treatment." Lancet 1:501 (1980)
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  • Compendium (Canada): Flagyl (Metronidazole) (1987
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