This was bugged in game.
When the shop in Tiger clan was stocked with new herbs several things were overlooked. I am not sure how or why though.
First, you can not combine ANY of them. This makes them heavy on item count.
Second, you can't eat, drink, or ingest them in ANY logical way:
You get a genich stem .
>eat stem
You'd be better off trying to inhale a genich stem.
>drink stem
You can't drink a genich stem!
>inhale stem
You inhale a genich stem.
You get some qun pollen
>eat poll
You'd be better off trying to drink some qun pollen.
>inhale pollen
You might want to light some qun pollen first.
>eat pollen
You'd be better off trying to drink some qun pollen.
>drink pollen
You drink a portion of some qun pollen.
You get some hulij elixir
>drink eli
You can't drink some hulij elixir!
>inhale eli
You might want to light some hulij elixir first.
>eat eli
You eat a portion of some hulij elixir.
You get some ojhenik potion
>drink pot
You can't drink some ojhenik potion!
>inhale pot
You might want to light some ojhenik potion first.
>eat pot
You eat a portion of some ojhenik potion.