It's for stomach bug, asking for my best friend, in a tiz as she's due to give birth any day and worried about labour with this going on! Thinking it might be necessary to take it under these circumstances!
She needs to speak to her doctor/midwife, doesn't matter what others have been prescribed she needs what's best for her, I'm sure its wont take much more than a phone call and as she's almost due maybe try calling the maternity unit?
If she is due any day this might be the clear out before labour. I had this and lots of other women do. Tell her to stay and home and let it all out! If she takes inmodium she risks getting backed up and constipated which after having a baby is a disaster. If it turns out to be a stomach bug she is better to let it all out. It might just be nerves as well.
Isn't it not meant for use if diarrhoea is caused by a bug, because it's better for the body to do it's job of getting rid of the bacteria that is causing the problem ie by firing it quickly out of the body.