Seretide and abdominal pain

Hiya peeps,

Ever since my lad's been on seretide his asthma control has been brilliant but he has a constant belly-ache and his appetite has dipped. I think he may have lost weight too. I strongly suspect that it's the seretide and am goong to make an appointment with the resp nurse. I notice that it isn't listed as a side-effect on the label but is on the US labelling. Just wondered if anyone else has reported this??

Thanks!