Hi Doctor, I Am Using Decdan 0.5 Mg And Asthalin

Hi doctor, i am using decdan 0.5 mg and asthalin 2mg for asthma as prescribed by my doctor for more than 1 year. Now my age is 23 initially when i am using these tablets asthma used to be in control but now even i am regularly getting asthma is there any alternative cure for this?? and i also want to know is there any side effects for decdan and asthalin usage.