Thank you for your question. Botox works by blocking signals from the nerves to the muscles. The injected muscle can no longer contract, which causes the wrinkles to relax and soften. A side effect of Botox is temporary headaches. It is not recommend to take Ibuprofen or any NSAID after Botox injections as it may cause bruising. It is okay to take Tylenol. I recommend speaking with your treating physician.
Hello Cinzia1.Yes it is safe after the treatment is done. Preferably don't take it for a few days before though, although in practice bruising is unlikely to be affected, in theory it could make your blood a little thinner and therefore bruse easier. Stick to paracetamol for your headache, with or without codeine if needed. Its a safer bet.Hope this helps.