They're not antibiotics, but be careful with antifungals
Dr. Jean also mentions that the US Medical Eligibility Criteria for Contraceptive Use "does not recommend the use of birth control pills with antifungals… which are not synonymous with antibiotics." You'll want to watch out for griseofulvin specifically, which is used to treat ringworm and nail fungus.
Since you may not have a degree from pharmacology school, it's always a smart idea to tell your doctor straight up about what kind of birth control you're on (really any drug you're taking is good information to share). Then you can both discuss options for a prescription that won't cancel out your decision to control the baby population.
What else can weaken your birth control's effectiveness?
If you thought drugs were your only concern, you have yet to come to terms with the full power of the human body and mind. Planned Parenthood says there are other factors that also have the potential to cancel out your birth control. What's even worse is that most of them fall under your realm of responsibility.
First, if you end up throwing up or having diarrhea within two hours of taking your birth control, you probably haven't actually absorbed enough of the pill for it to be effective. Makes sense, but it may not be something you consider as you're hurling into a trash can. In this case, a backup method must be used or you'll be suffering from morning sickness next time you face ride the porcelain throne.
Planned Parenthood also says that "the pill may be slightly less effective for women who are very overweight." While preliminary research suggests there's not a strong association between weight and birth control effectiveness, it's still best that you speak with your doc to see if you may be at risk for an unplanned pregnancy.