Is azithromycin 200mg liquid enough to cure chlamydia?

For Chlamydia, high doses of Azithromycin are used to treat the infection. If you use leftover meds belonging to someone else, the most likely effect will be developement of a resistant strain and incomplete treatment. Use telemedicine to talk to a Dr on a video consult in order to receive the correct treatment.

No. You need 1 gram, 5 times what you took.