Daisy 15 May 2008 01:05 pm Clammed - to my knowledge Clammed - to my knowledge 3rd generation cephs such as Rocephin/ceftriaxone do not have activity against gram negative intracellular pathogens such as chlamydia or mycoplasma, legionella, etc... Here is the PI for Rochephin - pages 4 and 5 has the antibiotic sensitivity testing results. http://www.rocheusa.com/products/rocephin/pi.pdf Also from the Rocephin PI see lines 258 on bottom of page 9- regarding Chlamydia trach in PID . Also - Dr. Stratton does not reference any testing on CPN with cephalosporins in his patent. Based on mechanism of action of cephs it would make sense to me that they would not work in CPn. Hope this helps. Daisy - Husband on CAP 5/07. Roxy, Diflucan round three 4-4, Rifampin, Bactrim DS, Mepron 4-6, Prednisone, Novantrone, Doxy, Azithromycin, Flagyl, Mino Daisy - Husband on CAP 5/07. Husband died from Acute Myelogenous Leukemia Secondary to the Infusion of Novantrone. Ie - the treatment with the conventional MS drugs killed him. Daisy on her own CAP 11/2012.