https://www.ahajournals.org/doi/full/10.1161/01.cir.94.5.878
https://www.ahajournals.org/doi/full/10.1161/01.cir.94.5.878
Nicotine is a stimulant. It improves concentration for individuals with ADHD, for much the same reasons that prescription stimulant drugs do. I picked up nicotine gum, and eventually switched to vaping myself, as a form of self-medication for my ADHD. If it really helps you block out distracting noises and sights from a busy office, that might be part of why.
You know what has really helped my focus? BREAKING THAT ADDICTION. Please, if anyone else is reading the parent I'm replying to and thinking about starting to use nicotine to self-medicate ADHD trust me it is NOT worth it. It's not worth not being able to enjoy a whole movie or show because you need to intake nicotine. It's not worth being trapped in airplanes without being able to vape. It's not worth the chemical dependence, even if you "only" get addicted to the gum or patch. Please hear my appeal to what a terrible idea the parent comment is proposing! Nicotine is the absolute worst drug.
I was never a smoker, and I vape the lightest dose nicotine available (3mg/ml). I have definitely developed a light addiction over the years, but I can go all day without needing my vape. The worst my cravings get are a feeling of "Man, vaping would be really nice right now." I even went on a week-long vacation last year, left my vape at home, and didn't even think about the nicotine I was missing until I got home.
But please! Don't take my anecdotal evidence and think it means you should pick up vaping! I know it's not the best for my health, and you may become far more addicted than I am.
I haven't even gotten into the world of rebuildables or anything like that. I use a basic Smok sub-ohm box (a T-priv), that I'm probably going to upgrade to the latest model in a few months, but I know there's an entire world of vape devices out there I've barely even glimpsed over the horizon, let alone explored. Luckily it's not too hard to talk myself out of fancy new hardware ($$) when my current mod gets the job done.
But flavors? I went and spent around $70 on flavors a couple weeks ago. Sounds crazy, but it's still cheaper than spending $100/month on commercial juices. And now I have a vast array of cool flavors to play with, and design my own recipes from.
Vaping can absolutely become a dangerous hobby.
Anyway, you're right, nicotine is a pain to quit and I wouldn't recommend it obviously. But vaping seems to be even more unhealthy and more distracting.
So, doing the math, as I use 3mg/ml juice, I vape about 720 mg of nicotine a month. If I bought the cheapest Wal-mart generic brand gum, in the 2mg pieces (because to replace my vape, I'd want a low dose per piece), 720 mg of nicotine in gum form would cost $81/month.
That is a huge difference. Even accounting for the fact that my vape device cost me originally $70, it's still cheaper, potentially as soon as the first month, to vape over chewing gum.
The nicotine is slowly absorbed through the oral mucosa. Coating the gum would give you an initial burst of nicotine, but would not have the sustained drip of nicotine that the traditional nic gum does.
I suppose one could melt down gum base, add a vaping nicotine solution, stir it together, let it set and then cut into pieces... but I would worry about the PG or VG that the nicotine is contained in doing something weird to the gum base. And you would have to be careful to stir it quite thoroughly to prevent nicotine "hot spots" in your gum.
Making a homemade lozenge or mint would be much easier, and I believe some people do, in fact, do just that. It would be similar to making hard candies, only at some point you would mix in the nicotine liquid. Since many of the flavorings used in vape juice were originally designed for use in baking and hard candies (and usually have a PG or sometimes VG base), I'm pretty certain the PG or VG of the nicotine won't screw up the texture of the candy.
https://www.wikihow.com/Make-Chewing-Gum
There doesn't seem to be any known interaction with gum base.