[A bit of an odd request, but hardly the worst thing he could have asked. Yamaguchi smiles and tries to look confident about it.]

Okay, Suga-senpai! Leave it to me. [Yamaguchi's awkward around people sometimes, but not especially shy, even if he tends to sink into the background of situations by default. He thinks he can handle talking to a pharmacist.] Do you have any idea what sorts of things she might ask me about? I don't want to go in totally unprepared...

[He doesn't need details, but Yamaguchi would prefer not to be blindsided completely if she starts asking for details on a subject he wasn't expecting.]