<s>[INST] Hi iam a 43year old woman and asthmatic.Iam on combitide star haler(fluticosone propionate and salmeterol)-125mcg twice a day.For the last one month I have swelling in my feet,no pain though. Iam a teacher and stand for at least 5hours.what could be the reason for my swelling. [/INST] Thank you for your question. I understand your concern. Swelling in your feet is no way related to asthma. Standing for long time may sometimes cause swelling of legs, due to pooling up of blood in the veins of lower limbs. It may be the reason in your case. Also, sometimes it may be the sign of heart failure. It is advisable to follow some tips:a) Have a morning walk for 20 - 30 mins daily.b) Keep your legs above the level of head during sleep.c) Avoid long time standing. If the swelling persist or if you are having any symptoms like shortness of breath or extreme weakness, then it is required to meet physician to have further evaluation related to heart failure (ECG, Echo etc.) Hope the answer helps. Thank you. </s>