DSS is 5 and has had on/off sick, mild fever and diarrhoea since Monday. Seen the out of hours who gave rehydration salts (which DSS won't have so have been making diluted rice water and squash instead), he won't eat but is drinking, still a bit lethargic. But this is really dragging on now - can I get over the counter Imodium or should I just take him to the GP tomorrow?