The hotbar works for this.
Now if only this worked for poisons on melee weapons as well.
To be fair I think it needs to be deleted and something else in its place. But the same could be said for many of the corrupted perks. They just don’t warrant replacing the perks they do, with the exception of Grotesque Excrescence and Petrified, and maybe Twisted Flesh (needed for Petrified).