Can't use crystaline flask

wait, we need more details. Are you saying that while the are ticking and healing you, you can't use, because if so, that's normal. They don't want you healing from both pots and flask at the same time, as that would heal you way too fast, and you'd win all lvl 1 duels ever.

However, if you're saying that, at any time after using , you can't use , even after it's done, then you have a bug.

How often do you use ?

I bought 5 health potions and a crystaline flask on Darius

I was bottom lane against Braum and Ashe

I tried using the crystaline while I was being healthed up for the mana, it did not work.

I tried a minute or so later, it still did not work. I had to return to the shop in order to use the flask.