Disclaimer: this is not a prescription. Using medicines without the guidance of a licensed provider can be lethal.
CDC recommends either one of these as the first line
Tetracyclin (doxycycline) 100 mg twice daily x 7 days
MaciOlide (azithromycin) 1 g single dose
Remember C. Trachomatis is a reportable STD in the US and Canada.