Irritable Bowel Syndrome (IBS) Females under the age of 35 are most at risk of IBS. Symptoms of IBS include: Constipation Abdominal pain Bloating Gas Diarrhoea IBS can be treated by medicines, diet and dietary supplements. Medicines Antidiarrheal medicines include: Imodium, Kaopectate and Pepto-Bismol. Depending on the cause of your diarrhoea, your doctor may prescribe [...]