I was on them for years for chronic reflux. With me it took a little while for the doc to find the best one. A week may seem like forever. But with ppis it's not that long. You should be starting to get some relief tho. You may need to try varying the dose with the help of your doc. Start low. But build if needed. They work in most cases.
Sadly for me the disease was too bad and we had to turn to surgery but that was the far far far end of the bad spectrum.
Good luck. Be patient. And don't be afraid to ask for help on here.
I was told by my Consultant to give them at least 4-8 wks, so one week is much too short time.
I was prescribed Nexium 1 x 40 mg per day.
Everyone reacts differently and improvement varies, I noticed a difference in 2-3 weeks.
Keep taking them regularly and if no improvement in 4 weeks you may need a different brand or stronger prescription.
All the best,