Is it safe to take qvar inhaler with avelox, prednisone and prometh codeine syrup? I'm a little nervous all together will make me feel worse.

Medication. I would not take medication with codiene. Codiene has a drying effect and makes it harder to expectorate, thus negating the effect of the qvar.
These are safe drugs. And combination is fine. Follow up with your dr if u have no improvement. Take care!