02/07/2008 00:58. The FDA has approved Warner Chilcotts 150-mg strength Doryx delayed-release tablets to treat acne.

The company already offers Doryx (doxycycline hyclate), a tetracycline-class oral antibiotic for treatment of severe acne, in 75-mg and 100-mg strengths.

Doryx delayed-release tablets contain enteric-coated pellets of doxycycline hyclate, which do not release until they reach the small intestine, minimizing the gastrointestinal side... // FDA news