Nicotine is a drug that is inhaled from the tobacco in cigarettes. It gets into the bloodstream, and stimulates the brain. Most regular smokers are addicted to nicotine. If you are a smoker, when the blood level of nicotine falls, you usually develop withdrawal symptoms such as restlessness, increased appetite, inability to concentrate, irritability, dizziness, constipation, nicotine craving, or just feeling awful. These symptoms begin within a few hours after having the last cigarette. If they are not relieved by the next cigarette, withdrawal symptoms get worse. If you do not smoke any more cigarettes, the withdrawal symptoms peak after about 24 hours, and then gradually ease over about 2-4 weeks. So, most smokers smoke regularly to feel ‘normal’, and to prevent withdrawal symptoms.
About 2 in 3 smokers want to stop smoking but, without help, many fail to succeed. The main reason why so few smokers succeed, even though they want to stop smoking, is because nicotine addiction is strong and difficult to break. This is where Zyban (bupropion) can help.
What is Zyban (bupropion) and how does it work?
Bupropion is a medicine that was first developed to treat depression. It was found that it helped smokers to stop smoking. It alters the level of some chemicals in the brain (neurotransmitters). This seems to relieve the withdrawal symptoms that you get when you stop smoking (such as craving, anxiety, restlessness, headaches, irritability, hunger, difficulty with concentration, or just feeling awful).
This medication is used in combination with a stop-smoking program (e.g., support group, counseling) to help you quit smoking. Bupropion can decrease your nicotine withdrawal symptoms (e.g., irritability, anxiety, and restlessness) and your urge to smoke. Quitting smoking decreases your risk of heart and lung disease, as well as cancer.
Dosage :Start by taking one tablet (150 mg) each day for six days. Then increase to one tablet twice a day, at least eight hours apart. Do not take more than one tablet at any one time and not more than two tablets in a day.Set a target date to stop smoking one to two weeks after starting treatment. This allows bupropion to build up in your body before you stop completely.You should continue the tablets for a further seven weeks. (So, this is eight weeks in total, which is two packs of tablets.)
Should not take bupropion if you : Are under the age of 18.Are pregnant or breast-feeding.Have ever had epilepsy, a seizure (fit or convulsion), or an unexplained blackout.Have ever had anorexia nervosa or bulimia nervosa.Have bipolar affective disorder (manic depression).Are withdrawing abruptly from benzodiazepines or alcohol dependence.Have a tumor of the brain or spinal cord.Have had a previous allergic reaction to bupropion tablets.
Store the product at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Keep all medicines away from children and pets.