Before bulk nicotine got shut down across the EU (750,000,000 people) I found the best Nicotine base liquid came from a very basic supplier. (Basic = not expensive or OTT with the marketing).
Now, I can't speak for the US, but according to many professional mixers and vendors, Nicotine only really came from a few sources.
i.m.o. there were lots of suppliers making out they were selling a premium product. No surprise.
I would suggest trying a few and deciding without buying large amounts. I bought expensive Nicotine that tasted really bad before I discovered that, like the rest of this industry, too many people just sell junk and pretend they are the best. Again, no surprise whatsoever.
Be careful.
Now, I can't speak for the US, but according to many professional mixers and vendors, Nicotine only really came from a few sources.
i.m.o. there were lots of suppliers making out they were selling a premium product. No surprise.
I would suggest trying a few and deciding without buying large amounts. I bought expensive Nicotine that tasted really bad before I discovered that, like the rest of this industry, too many people just sell junk and pretend they are the best. Again, no surprise whatsoever.
Be careful.