Nicotine is a neurotoxin, by the way. In small amounts it deadens nerves.
A fact my buddy discovered quite swiftly after trying some chew. He also discovered that for first timers, it causes you to feel light headed and ill. :^)
I’ve never tried it. Never will.
It is more addictive than alcohol and marijuana because it deadens psychic pain, but does not usual impair performance.