When it's in cigarettes, yes it is addictive. There is no scientific evidence that nicotine by itself, is addictive, but there is scientific evidence that it isn't.Not sure how some people in here are saying nicotine is not addictive. Its as addictive as .......
"Nonsmoking subjects with amnestic MCI were randomized to transdermal nicotine (15 mg per day or placebo) for 6 months."
"No withdrawal symptoms were reported by subjects or informants nor were any subjects reported to be continuing to use nicotine after the study was completed."
Nicotine treatment of mild cognitive impairment: A 6-month double-blind pilot clinical trial