I woke up with the famed droopy eyelid 4 days after receiving Dysport. After no success getting a prescription from my Dr. I then went to the pharmacy and bought the NaphconA drops and they worked wonders. My concern is the effect only seems to last a couple of hours and it states you should only take 4 times a day. It also says that you should only take for 4 days. How long can I safely take it and how many times a day?