"I do, actually. I never leave home without it." Isaac dug into his suitcase and eventually pulled out a small vial. "It's not exactly the most [i]fashionable[/i] thing, but you can just keep it in your pocket for now." He handed it to her. "Well, my turn to clean up. I'm covered in airport gunk." He was at least trying to make light of the horrible situation at hand. 

Isaac took out a pair of pajama pants and a t-shirt and went into the bathroom to wash up. When he came back, he dug in his bag until he found his Unisom. 

"Want some?" He offered, "This stuff does wonders." 

Making a career out of hunting demons certainly wrecked one's sleep habits. He'd had to resort to medication to sleep well on multiple occasions.