what are the sources of nicotine for Nicotine Replacement Therapy Drugs? and how costy is the extraction of nicotine from these sources?

[wanghankun]

what are the sources of nicotine for Nicotine Replacement Therapy Drugs? and how costy is the extraction of nicotine from these sources?

i cant find any information on the internet, is there anyone that could tell me?

[John Cuthber]

The nicotine is extracted from tobacco plants.

I don't have and specific data but it's difficult to see why the stuff should be more expensive than caffeine for example.

[wanghankun]

thanks.