We're flying long haul with Ds's shortly and I want to have something to hand to help them sleep should they get over-wrought. Not that keen on phenergan cos of potential side/after-effects. Are there any alternatives? Don't want to depend on Calpol cos, for my boys anyway, it just doesn't make them drowsy. Hopeflly won't need anything but at 30,000 feet up would like to have something up my sleeve!