PrEP is safe to take with most other medications. One exception is non-steroidal anti-inflammatories (NSAIDs), like ibuprofen and naproxen. The reason for this is the added pressure NSAIDs put on the kidneys and liver. For that reason, avoid NSAIDs as much as possible while on PrEP.
Be sure to talk to your healthcare provider about all the medications you take.