Ah, well, that's what having another hand is for, yes?

[It won't be quite the same, maybe, and he'll probably forget at least once over the course of the next few days, too. In fact, he reflexively moves to take the potion with the hand in question, before remembering otherwise and taking it with the other - it vanishes away into one of his pockets not long thereafter.]

And better to have this than to leave things to how they might otherwise be. I'm not sure I want to know what might happen if the effect was allowed to run unchecked.