Nicotine patches release nicotine into the bloodstream through the skin.
Nicotine gum releases nicotine as you chew, which is then absorbed through the lining of the mouth.
Nicotine lozenges release nicotine as they dissolve in the mouth.
These small nicotine tablets dissolve under the tongue.
Nicotine nasal sprays deliver nicotine through the nose lining.
THERAPIES WITHOUT NICOTINE
They come in the form of tablets and are usually prescription only.