Faolan looks uncomfortable at the mention of him having drank the tea. He knows in a way that it's good, for their investigation. At least they will have some sort of a control, they will know which sort of potion has which kind of a reaction, and if they can determine a difference between them then they might determine which teas the others are and what reaction they cause as well as create an antidote to them... Well, then his misfortune will be in aid of others' health and safety.

But he also is aware that he's probably going to have to answer some questions himself about this, since he's their guinea pig of sorts. And he's not quite certain how he feels about that, really. For the greater good, yes he will do what he can. But will he particularly enjoy any of it, especially when it's not just Lancelot asking, but a third party empath for that matter? Hardly.

Faolan frowns grumpily and takes a bite of his doughnut, glancing at Siobhan for a long moment himself, before forcing himself to pipe up and say, "I. Can answer what questions I can. About the side-effects. If you need it." They have statements from other people, but since he'd had some and he's right there...