Noggenfogger Elixir use in mounts

Hiiii!! My apologies in advance because I am using a translator and perhaps some things are not understood well. I previously read a member "Kyuxuh" of the community who addressed this same topic a couple of years ago. It would be great to be able to use the mounts with any buff or potion effect on, It was such a cool feature, I come from playing on the blizz server and I miss that, I don't know if that was added in the "recent wotlk" or it has always been like that.!! Also, sharing mounts between characters on the same account, I know maybe it's not possible, but it would be great to have that too. :D XOXO!! thank you for your hard work. :)