If you want to quit smoking, there are many options available, including prescribed medications. These Mdo not contain nicotine, do not form a habit, and work in a completely different way than NRT options. They are designed to help battle withdrawal symptoms, reduce cravings and keep you from using tobacco again. To increase your chances of succeeding, it is best to use these medications alongside a plan or a program which contain a clear decision to quit smoking, knowing how to deal with urges to smoke again, and getting a helpful hand from your doctor, support groups in your city, or a counselor. Bupropion (Zyban) Bupropion (Zyban) works by reducing the amount of craving for nicotine (tobacco), and it is also used by people with depression. It is important to note that it should not be used by people under 18 years of age, pregnant women, or people who have a history of medical problems that include seizures, alcoholism or heavy alcohol use, kidney failure, eating disorders, bipolar or manic depressive disorders, or head injuries. You should start taking bupropion one or two weeks before you plan to quit smoking, and it can be taken for 6 months to a year. Common dosage is one or two 150 mg pills a day. If you are also using some other form of quitting aid, it is best to discuss it with a doctor before taking Bupropion. Contraindications may include dry mouth, problems sleeping. If sleeping problems occur, try taking your seconds dose in the afternoon, but at least 8 hours after the first dose. If you notice changes in your behavior such as agitation, anger, suicidal thoughts, depressed mood, please stop taking the medication immediately. Varenicline (Chantix) Varenicline (Chantix) helps with cravings and withdrawal symptoms, by reducing the physical effects of nicotine to your brain, and in case of a relapse, it reduces feelings of pleasure from smoking. Start taking it at least one week before you decide to put your plan into action. Your doctor should tell you how to properly take this medicine, but most people start by taking 0.5 mg pill a day. Take the pill after a meal, with a glass of water. It is extremely important to note: do not take this medication if you are using nicotine replacement therapy. Side effects are not common, but may include headaches, problems sleeping, strange dreams, constipation, gases, nausea, changes in taste, changes in mood, suicidal thoughts or attempted suicide. If any of these occur, please contact your doctor immediately.