Hmm, that's interesting. Intestines have a limited bandwidth, so it limits the amount of SN that can be digested per time period, so it has relatively long time before you'll pass out.
But considering what OP stated - you can combine taking SN perorally AND through wet skin.
The question is, what place place would be more efficient. Should I just spread SN on my chest closer to heart, or maybe it's better to apply it to neck as arteries and veins are clother to skin.
It's actually a really interesting idea.