One thing that tends to be pretty rare outside of some created specifically for the Kingsglaive and the Crownsguard are potions, rare enough that Gladio actually doesn't catch on immediately what he's being handed. Instead, he stares down at the glowing liquid with a what on Eos...?

Then, feeling immensely stupid, it clicks in his mind. He'd seen his father with them before, on rare occasion. Noctis turned it into a potion! Right. Just drink it, stop looking like an idiot.

So he lifts it to his lips, then pauses. A gesture with his index finger on the glass. "You, too." He needs to make sure that Noctis will be okay before he goes about helping himself.