Hi Thanks for your query First of all you must know that irritable bowel syndrome is not an allergic disorder. Life style modification is the main treatment of it. Certain foods, such as cruciferous vegetables (cauliflower, broccoli, cabbage, brussels sprouts) and legumes (beans) may worsen bloating and gassiness. Dietary fiber may lessen symptoms. Individuals with IBS should drink plenty of water, and avoid soda, which may cause gas and abdominal discomfort. Eating smaller meals may lessen the incidence of cramping and diarrhea. Low fat and high carbohydrate meals such as pasta, rice, and whole grain breads may help IBS symptoms (unless the affected individual has celiac disease). Stress may cause IBS flares. Doctors may offer specific advice on reducing stress. Regularly eating balanced meals and exercising may help reduce stress and problems associated with irritable bowel syndrome. Smoking may worsen symptoms of IBS, which gives smokers another good reason to quit. Among medicines you may take colospa retard tablet 200 mg twice daily. Even then if you need food allergy test then i will suggest u to go to rittwik allergy centre near moulali charch in central calcutta for allergy testing. Thank you.