<unk> (transdermal) is a depending agent that is FDA approved for the treatment of Reducing withdrawal symptoms, including<unk> craving, associated with quitting smoking.   Common adverse reactions include skin irritation, nasal irritation, nasal spray, oral irritation, dizziness, headache, insomnia.
Nicotine 
Heroin
N-Nitrosonornicotine
Cannabis 
Nicotinyl alcohol
Opiate
Methamphetamine
Benzocaine 