How long does minocycline antibiotic take to work on your acne?

Depends. It does not work at all for some people but it can take a couple of months to see an effect before i'd give up on it.

Related Questions

I take minocycline (50mg) once a day for my acne. If I hadn't taken the antibiotic in over 24hours and then took plan b, will plan be still work?

Not sure. There is no way to be sure ceasing the minocycline did not impact the plan B medication. A pregnancy test at earliest a week after the unprotected intercourse could demonstrate, if there was conception or not.
Yes. Drugs. Com Drug interaction checker showed no significant interactions between Minocin (minocycline) & Plan B One-Step (levonorgestrel).