Hay fever
Some days I suffer quite badly, I get tablets from the chemists, they're called Phenergan, a prescription is'nt required, . . anyways I'm reading the info leaflet that came with them, they can also be used for travel sickness and if you're not sleeping well you can take 2 at bedtime.
Further on in the leaflet there are warnings about how they may adversely affect you, one of which says to stop taking them if you feel drowsy
what the hell do they mean by that, they're supposed to help you sleep so they say.