Not the gonorrhea: Doxycycline 100mg twice a day for 7 days is a treatment for chlamydia. Treating gonorrhea requires oral Cefixime or a shot of ceftriaxone.Doxycycline OK: Fosfomycin (Urizone) is not normally used to treat chlamydia and probably not effective. However, doxycycline is excellent...