I agree with Michelle. Paracetamol + codeine is the only way to go if you can't have anti-inflammatories. Panadol back and neck is long lasting paracetamol. One higher up (with regards to pain relief) is panadeine, then panadeiene 15 for stronger pain relief. Mersyndol is better for night as it will make you drowsy ( is a good muscle relaxant though). Speak to your pharmacist hun.