It's difficult to say, some do some don't. A couple of weeks ago i had been unwell for quite a while & had different types of antibiotics over a 5 week period. Unfortunately for me most of the time it kicked me out of ketosis.
I believe you can ring LL central office and speak to them, they have a list of different medications that knock you out of ketosis, just tell them which one you are taking
Sorry couldn't be much help...xxxx