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J Pharm Sci. 2010 Apr;99(4):1639-53. doi: 10.1002/jps.21954.

Biowaiver monographs for immediate release solid oral dosage forms: Doxycycline hyclate.

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  • 1Institute of Pharmaceutical Technology, Goethe University, Frankfurt am Main, Germany.


Literature data relevant to the decision to allow a waiver of in vivo bioequivalence (BE) testing for the approval of immediate release (IR) solid oral dosage forms containing doxycycline hyclate are reviewed. According to the Biopharmaceutics Classification System (BCS), doxycycline hyclate can be assigned to BCS Class I. No problems with BE of IR doxycycline formulations containing different excipients and produced by different manufacturing methods have been reported and hence the risk of bioinequivalence caused by these factors appears to be low. Doxycycline has a wide therapeutic index. Further, BCS-based dissolution methods have been shown to be capable of identifying formulations which may dissolve too slowly to generate therapeutic levels. It is concluded that a biowaiver is appropriate for IR solid oral dosage forms containing doxycycline hyclate as the single Active Pharmaceutical Ingredient (API) provided that (a) the test product contains only excipients present in doxycycline hyclate IR solid oral drug products approved in the International Conference on Harmonization (ICH) or associated countries; and (b) the comparator and the test products comply with the BCS criteria for "very rapidly dissolving" or, alternatively, when similarity of the dissolution profiles can be demonstrated and the two products are "rapidly dissolving.".

2009 Wiley-Liss, Inc. and the American Pharmacists Association

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