Patents Examined by Eli Peselev
  • Patent number: 7438924
    Abstract: This invention relates to a pharmaceutical formulation, in the form of a tablet, sachet or powder for suspension dosage form, which comprises dry granulated particles of a non-dihydrate form of azithromycin and, optionally, one or more pharmaceutically acceptable excipients. Preferably, the pharmaceutical formulation is a tablet containing between about 40%, by weight, to about 90%, by weight, non-dihydrate azithromycin. More preferably, the pharmaceutical formulation contains non-dihydrate azithromycin selected from the forms B, D, E, F, G, H, J, M, N, O, P, Q, R, or mixtures thereof. Even more preferably, the invention relates to a pharmaceutical formulation wherein the dosage of azithromycin is 250 mgA, 500 mgA, 600 mgA or 1000 mgA. The present invention further relates to a dry granulated azithromycin particle, comprising a form of azithromycin, selected from forms D, E, F, G, H, J, M, N, O, P, Q, R and mixtures of non-dihydrate forms, and at least one pharmaceutically acceptable excipient.
    Type: Grant
    Filed: January 31, 2003
    Date of Patent: October 21, 2008
    Assignee: Pfizer Inc
    Inventors: Barbara A. Johnson, Ernest S. Quan