Are ALL water soluble drugs snortable/sublingual?

[godisamushroom]

I have gabapentin that takes a good hour and a half to 2 hours to take effect.

I researched that gabapentin is highly soluble in water, but could it have a filler of some type or something that renders it useless for sublingual use?

i was planning to just let them dissolve under my tongue in hopes of rapid onset, but I don't want to waste it if it doesn't even work.