Nicotine itself isn't harmful, but smoking and vaping are. A cigarette has about 20 mg of nicotine while replacement products deliver 1-5 mg. Nicotine sprays are available in Mexico, Canada, and Europe but not FDA-approved in the US.
Chapters
Here's the thing about nicotine. Smoking and vaping will shorten your life. They are bad for you. So when I say nicotine, everyone hears tobacco. No, this is pharmaceutical nicotine extracted from tobacco. One cigarette has 20 milligrams. I'm talking one to five milligrams of nicotine delivered either orally or through the skin. I usually use a nicotine spray. And you can buy it in Mexico, Canada, all of Europe, all of the Middle east and Australia. But it's not approved in the US it's from Nicorette. So in the US you can get little sachets, but watch out for artificial sweeteners in them. You don't want that.