Can I mix levofloxacin with NyQuil?

It's generally advisable to consult a healthcare professional before mixing medications, including levofloxacin and NyQuil. Levofloxacin is an antibiotic, while NyQuil is a cold and flu medication that may contain ingredients like acetaminophen and diphenhydramine. Mixing them could lead to increased side effects or interactions, so it's best to get personalized advice from a doctor or pharmacist.