Nicotine therapy is administered in numerous ways: patches, gum, lozenges, sprays, or inhalers. All these strains offer the possibility of quitting smoking in different ways. You can wear the patch on your upper body, you can inhale the spray through your nose, or you can chew gum or take a lozenge at different times of the day. Nicotine therapy has been shown to be very effective “Nicotine therapy has been shown to be effective in increasing smoking cessation by 150% to 200%” (Diefenbach, Smith para 1). These numbers show how effective nicotine therapy really is. In the cigarette the amount of nicotine is controlled by the amount of nicotine contained in each cigarette. However, during therapy you are likely to take more nicotine, the maximum is 4 mg if you are a heavy smoker, i.e. if you smoke 2 packs a day and if you have smoked for over 20 years. One problem was that many young people smoked cigarettes for weight control. Research shows that “There is a dose-response relationship between nicotine gum and weight gain: smokers who use more gum gain less weight” (Dienfenbach, Smith para 2). This proves that nicotine therapy using chewing gum can help you keep the weight off without causing any physical harm to the body. However, as effective as the patch may be, it also has many side effects that it can cause such as headache, anxiety, dizziness, stomach upset or nausea. These side effects can also lead to tremors, chest pain, or difficulty