<s>[INST] I have been taking tetrasyl 300, one per day, for 6 weeks, and my sexual partner tells me she has chlamydia. Wuld it have protected me from infection in this circumstance? In the event that I am infected will it deal with the infection, if say I double the dose? [/INST] Thanks for posting you query to Chat Doctor .it may be possible that you may get infection, but disease will not develop as you are on antibiotic. But you should investigate your self after 15 days for ELISA for diagnosis of chlamydia. If you develop any genital lesion or discharge contact to health care settings. Hope you would be satisfied with my answer.  Feel free to communicate if any query.regards, Chat Doctor.  </s>