I also love Symbicort and been on it for 8 months. I use it for maintenance and as my rescue per my Mayo pulmonologist so it’s replaced albuterol and airsupra. The only side effect was thrush so wash out your mouth after each use. I do find that it took a month to get going and about 4 months in it felt like it wasn’t working anymore, but then after two weeks it kicked back in. I think that’s just how it works. Its my lifeline so hope you get the same relief!