I am a 17 year old male. I had suffering from unusual sneezing and I caught cold easily and very often. So my doctor prescribed to allergy test: serum IgE. Allergens found to be in high quantity: 20198. So he prescribed to take Ventidox DL once a day after dinner and said it's gonna be a long time treatment. After 4 months, now I'm having unusual stools. I'm not getting urge regularly as I used to get before. Also stool quantity & quality has decreased. And I'm also having very warm & hot (with inflammation) & odorous flatulence. Please tell me what are the reasons for this sudden change?