My doctor prescribe 2mg Loperamide on Friday to stop my poo being too loose. I have been on the loo worse than ever! I now have blood in my poo, massive flatulence, stomach ache and my back passage feels like it has been scrubbed with a Brillo Pad. Loperamide contains Lactose which can be the only thing to trigger such a horrendous side effect. Anyone else had this problem?