Any info / experience with controller inhaler "Dulera?"

Hi - I've had asthma since I was a teenager, and up until the last couple of years was still able to play competitive sports, aggressive cardio workouts and pretty much whatever I wanted to do. 

Currently I am not able to do any level of cardio beyond "fast walking" and have been working with my PCP on what to do about this.  I do use an Albuterol inhaler as a rescue and prior to any strenuous activity, but again suddenly that's not enough.  I've gone down the route of controller meds including symbicort, spiriva and advair which did nothing.  

After my recent annual physical my PCP consulted with a pulmonologist that suggested Dulera as a controller med so I've just started that - and hence my post - does anyone have any experience using Dulera?  Any insight to personal experience in terms of effectiveness, SE's and so on would be very much appreciated. 

Hi I saw your post, and decided to sign up finally. I am not new to allergies, but the pulmonologist thinks that I have mild asthma, or bronchial spasms. I also have silent GERD.
I have been on Dulera almost one month. I also use controller meds, and albuteral before working out. He put me on a z-pack, and antibiotic, and switched some of my meds, taking away symbicort, and putting me on Dulera and also a new one called tudorza. I think for the first time in 5 months, I feel so much better. Because of the combination of meds, I am not sure if this is a help to you.