I bugged in game about it, was able to drink it years ago and not when try to drink it, nothing, no action is shown.
It has There are one hundred sips left of the glass bottle.
A really strong poison is in it, I have had some of it years ago, when I first got it.

[Naohhi] We'll look into it, but for now, you're making giant errors pop up all over the place on this side. :p
[Naohhi] That means.. please stop.
You have some tiny scratches to the wings.
Javac exclaims, "You didn't see me!"