Use of polymorphic forms of rifaximin for medical preparations

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Reexamination Certificate

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07915275

ABSTRACT:
The present invention relates to Rifaximin polymorphic forms α, β and γ, to their use in medicinal preparations for the oral or topical route and to therapeutic methods using them.

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