<s>[INST] i have had asthma for over 20 years, used different types of medicnes. im now using seretide 50/500mg  and  montelukast but still get breathing problems, cannot  walk without gasping for breath or do any exercise.  I have also put alot of weight.  please help [/INST] HI, thanks for using Chat Doctor Your increase in weight may have occurred as a result limited mobility due to your shortness of breath. This weight gain would then have a negative impact on your asthma. You are currently on the maximum dose of sere tide available. Your doctors may consider checking for any factors that may be aggravating your asthma such as sinusitis or reflux. If there are any current infections that are affecting your lung function these also need to be treated. You need to consider visiting a pulmonologist to get better control of your asthma. I hope this helps </s>