Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Food or edible as carrier for pharmaceutical
Reexamination Certificate
2004-07-22
2009-02-03
Tran, S. (Department: 1618)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Food or edible as carrier for pharmaceutical
C424S464000, C424S465000, C424S489000
Reexamination Certificate
active
07485319
ABSTRACT:
The present invention is a solid dosage form of a doxycycline metal complex. The present invention also includes a process for making a doxycycline metal complex in a solid dosage form. The process comprises the steps of (i) providing an aqueous solution of doxycycline or a physiologically acceptable salt thereof; (ii) admixing a metal salt with the aqueous solution; (iii) admixing a base to increase the pH of the aqueous solution, thereby forming a suspension of doxycycline metal; and (iv) drying the suspension, thereby forming a dry granulation of doxycycline metal complex.
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