Before taking bupropion,

tell your doctor and pharmacist if you are allergic to bupropion, any other medications, or any of the ingredients in bupropion tablets. Ask your pharmacist or check the Medication Guide for a list of the ingredients.

tell your doctor or pharmacist if you are taking the following medications or have stopped taking them within the past two weeks: monoamine oxidase (MAO) inhibitor such as isocarboxazid (Marplan), linezolid (Zyvox), methylene blue, phenelzine (Nardil), selegiline (Eldepryl, Emsam, Zelapar), and tranylcypromine (Parnate).

do not take more than one product containing bupropion at a time. You could receive too much medication and experience severe side effects.

some medications should not be taken with bupropion. Other medications may cause dosing changes or extra monitoring when taken with bupropion. Make sure you have discussed any medications you are currently taking or plan to take before starting bupropion with your doctor and pharmacist. Before starting, stopping, or changing any medications while taking bupropion, please get the advice of your doctor or pharmacist.

the following nonprescription product may interact with bupropion: cimetidine (Tagamet). Be sure to let your doctor and pharmacist know that you are taking this medication before you start taking bupropion. Do not start this medication while taking bupropion without discussing with your healthcare provider.

tell your doctor if you have or have ever had seizures, anorexia nervosa (an eating disorder) or bulimia (an eating disorder). Also tell your doctor if you drink large amounts of alcohol but expect to suddenly stop drinking or you take sedatives but expect to suddenly stop taking them. Your doctor will probably tell you not to take bupropion.

tell your doctor if you drink large amounts of alcohol, use street drugs, or overuse prescription medications and if you have ever had a heart attack; a head injury; a tumor in your brain or spine; high blood pressure; diabetes; or liver, kidney, or heart disease.

tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking bupropion, call your doctor.

you should know that bupropion may make you drowsy. Do not drive a car or operate machinery until you know how this medication affects you.

talk to your doctor about the safe use of alcoholic beverages while you are taking bupropion. Alcohol can make the side effects from bupropion worse.

you should know that bupropion may cause an increase in your blood pressure. Your doctor may check your blood pressure before starting treatment and regularly while you are taking this medication, especially if you also are using nicotine replacement therapy.

you should know that bupropion may cause angle-closure glaucoma (a condition where the fluid is suddenly blocked and unable to flow out of the eye causing a quick, severe increase in eye pressure which may lead to a loss of vision). Talk to your doctor about having an eye examination before you start taking this medication. If you have nausea, eye pain, changes in vision, such as seeing colored rings around lights, and swelling or redness in or around the eye, call your doctor or get emergency medical treatment right away.

you should know that some people have reported symptoms such as changes in behavior, hostility, agitation, depressed mood, and suicidal thoughts (thinking about harming or killing oneself or planning or trying to do so) while taking bupropion to stop smoking. The role of bupropion in causing these mood changes is unclear since people who quit smoking with or without medication may experience changes in their mental health due to nicotine withdrawal. However, some of these symptoms occurred in people who were taking bupropion and continued to smoke. Some people had these symptoms when they began taking bupropion, and others developed them after several weeks of treatment or after stopping bupropion. These symptoms have occurred in people without a history of mental illness and have worsened in people who already had a mental illness. Tell your doctor if you have or have ever had depression, bipolar disorder (mood that changes from depressed to abnormally excited), schizophrenia (a mental illness that causes disturbed or unusual thinking, loss of interest in life, and strong or inappropriate emotions), or other mental illnesses. If you experience any of the following symptoms, stop taking bupropion (Zyban) and call your doctor immediately: suicidal thoughts or actions; new or worsening depression, anxiety, or panic attacks; agitation; restlessness; angry or violent behavior; acting dangerously; mania (frenzied, abnormally excited or irritated mood); abnormal thoughts or sensations; hallucinations (seeing things or hearing voices that do not exist); feeling that people are against you; feeling confused; or any other sudden or unusual changes in behavior. Be sure that your family or caregiver knows which symptoms may be serious so they can call the doctor if you are unable to seek treatment on your own. Your doctor will monitor you closely until your symptoms get better.