Hello. Thank you for asking at HCM. I went through your friend s history and would make suggestions for him as follows: 1. I would suggest him regular montelukast and inhaled corticosteroids for at least 3 months. I would also suggest him to use salbutamol (Asthalin that he is already using) inhaler on as-and-when-needed basis. 2. I would recommend him allergy testing and consult an Allergist-Immunologist. This will him identify the substances causing allergies and also to know the measures to avoid them. Based on the report, an Allergist-Immunologist may prescribe him allergen specific immunotherapy which works on immune system to gradually improve his allergy symptoms on a long term basis. 3. In general, I would suggest him to avoid exposure to dusts, smokes and air pollution as much as possible. 4. I would also suggest him regular breathing exercises and a healthy diet rich in vitamins & minerals (adequate amounts of green leafy vegetables, fruits, sprouts, etc) to improve his lung capacity and immunity gradually over a long term basis. 5. Deriphyllin is a very commonly used drug in asthma and effective also, but I usually do not use to regularly because it has many side effects like nausea-vomiting, cardiac and nervous side effects. Hope above suggestions will be helpful to you. Should you have any further query, please feel free to ask at HCM. Wish your friend the best of the health. Thank you & Regards.