"Muggle medicine. I think I might have some in my pocket, actually—where’s my coat?" Remus finally opens his eyes to look for his coat, but Sirius is the one who fetches it for him. "Ta." Remus reaches his hand into his Enlarged inner pocket, fishing past his empty moneybag, a book, pack of cigarettes, chocolate—finally, he finds a bottle of Advil, which he brings out.