I'm having very weak digestion system. Whatever I eating I have to pass in stool after 3-4 hours. Whenever i'm going to toilet first time in the morning it takes to long 30 minutes in the toilet. I have to go toilet for 4-5 times a day. Chronic constipation. Taking pegmove powder sometimes. Done colonoscopy before report was normal. Doctors suggests that ibs but didn't give me proper medicine. Tried all kind of diets and drinks to reduced chronic constipation but nothing works. My condition is very serious and embarrassing. Also having very bad mucus cough taking gufainacin 400 mg tablet to reduce mucus cough. Please kindly suggest me proper medicine for long time relief. I'm also underweight due to poor digestion and feel ashamed for that because looking very skinny and unhealthy.