What is Bupropion: Uses, Warnings & Interactions

Medically reviewed by Leslie GreenbergMD
Board-Certified Family Physician
Updated Aug 5, 2025  •  Published Dec 30, 2020
Fact Checked

Bupropion is a commonly prescribed generic antidepressant. Like other antidepressants, bupropion changes the balance of neurochemicals in the brain that pass nerve signals, but it targets chemicals not usually targeted by other antidepressants. Bupropion can only be taken orally, and tablets are available in three formulations: immediate-release, sustained-release, and extended-release.

Bupropion overview

BRAND NAMES:

  • Wellbutrin, Wellbutrin SR, Wellbutrin XL, Aplenzin, Forfivo XL

Generic Names:

  • Bupropion HCl

Uses:

  • Treats depression, seasonal affective disorder, and smoking cessation. Used off-label to treat several conditions, including ADHD and bipolar depression.

Therapeutic Classes:

  • Antidepressant, antismoking agent

Forms:

  • Tablet, sustained-release tablet, extended-release tablet

How it’s taken:

  • By mouth

What is Bupropion used for?

The FDA has approved bupropion to treat adults with major depressive disorder (MDD), seasonal affective disorder (SAD), and smoking cessation. Healthcare professionals commonly use it off-label to treat a variety of problems, including attention-deficit/hyperactivity disorder (ADHD), antidepressant-induced sexual dysfunction, depressive episodes in adults with bipolar disorder, and obesity. The combination of naltrexone and bupropion is FDA-approved as a weight loss drug.

Key takeaways

  • Bupropion is commonly used for major depressive disorder, seasonal affective disorder, and smoking cessation. 

  • It is an oral medication available in multiple formulations. 

  • Some patients should not take bupropion: history of eating disorder, kidney disease, liver disease, heart disease, high blood pressure, or diabetes.

What form(s) does Bupropion come in

  • Tablet 

    • 75 mg

    • 100 mg

  • Sustained-release tablet 

    • 100 mg

    • 150 mg

    • 200 mg

  • Extended-release tablet 

    • 150 mg

    • 300 mg

What are common Bupropion doses?

  • For depression: 

    • 100 mg immediate-release bupropion tablets taken two or three times daily OR 

    • 150 mg sustained-release bupropion tablets taken once or twice daily OR 

    • 150–300 mg extended-release bupropion tablet taken once daily OR

    • 174–348 mg extended-release Aplenzin taken once daily OR

    • 450 mg extended-release Forfivo XL taken once daily

  • For seasonal affective disorder: 

    • 150–300 mg extended-release tablet taken once daily in the morning OR

    • 174–348 mg extended-release Aplenzin taken once daily in the morning

  • For smoking cessation: 

    • 150 mg sustained-release bupropion tablets taken twice daily for 12 weeks, started a week before stopping smoking.

Common Bupropion prescriptions

  • buPROPion HCl
    100 tablets bottle

  • buPROPion HCl
    100mg tablet

  • buPROPion HCl
    75mg tablet

How to take Bupropion

  • Take this medicine as directed. The dose may need to be changed several times to find the most effective dose.

  • Please read the Medication Guide that comes with this medicine.

  • No matter what the dosage form, take doses at the same time each day.

    • You will take two or three doses of bupropion daily. Take doses at least six hours apart.

    • You will take one or two doses of sustained-release bupropion daily. Take doses at least eight hours apart.

    • You will take one dose of extended-release bupropion daily. Take doses 24 hours apart.

  • Doses can be taken with or without food.

    • Take doses with food if the medicine causes stomach upset.

  • Swallow bupropion tablets whole with a drink of water. Do not break, cut, or chew them.

  • The tablets may have an odor. This is normal.

  • Store immediate-release and sustained-release bupropion in a closed container at room temperature. Keep the tablets dry and protected from light.

  • Store extended-release bupropion in a closed container at room temperature.

What to do if you miss a dose of Bupropion

  • Skip the missed dose and go back to your regular dosing schedule. 

  • Never take extra medicine to make up for a missed dose.

Bupropion contraindications

  • This medicine is not right for everyone. 

  • Do not use it if you have had an allergic reaction to bupropion or if you have:

    • A seizure disorder

    • A history of anorexia or bulimia

Bupropion warnings

  • Tell any doctor or other healthcare provider who treats you that you are using this medicine.

  • The prescribing physician will check your progress and the effects of this medicine at regular visits. Keep all appointments.

  • Tell your prescriber if you are pregnant, breastfeeding, or if you have:

    • An eating disorder

    • Kidney disease

    • Liver disease

    • A head injury

    • A central nervous system tumor

    • Heart disease

    • A history of heart attack

    • High blood pressure

    • Diabetes

    • Mental illness (including bipolar disorder)

    • A history of drug addiction or alcohol abuse

    • A history of bipolar disorder

    • A history of suicidal thoughts or behaviors

  • This medicine can cause serious problems, including: 

    • Changes in mood or behavior, including thoughts of suicide

    • Psychotic symptoms, including hallucinations

    • Seizures

    • High blood pressure

    • Manic episodes

    • Angle-closure glaucoma

    • Severe allergic reactions

  • For some children, teenagers, young adults, and people taking bupropion for smoking cessation, this medicine may increase mental or emotional problems and lead to thoughts of suicide. Talk with your doctor right away if you or someone taking buspirone has any thoughts or behavior changes that concern you. 

  • When using buspirone for smoking cessation, you may still have urges to smoke at times. Have a plan to cope with these situations.

  • Do not stop using this medicine suddenly. Your doctor will need to slowly decrease your dose before you stop it completely.

Bupropion interactions

  • Do not take bupropion and an MAOI within 14 days of each other. Find a list of MAOIs here.

  • Do not take bupropion with other drugs that contain bupropion, including Aplenzin, Forfivo, Wellbutrin, Auvelity, or the weight-loss medication Contrave (naltrexone-bupropion).

  • Do not take bupropion if you suddenly quit taking drugs that make you sleepy or drink heavily and suddenly stop. Bupropion is contraindicated in patients who have recently and abruptly discontinued alcohol, benzodiazepines, barbiturates, or antiepileptic drugs. Abrupt cessation of these substances increases the risk of seizures, and bupropion itself lowers the seizure threshold, compounding this risk. Therefore, starting bupropion in this situation can significantly increase the likelihood of a seizure and should be avoided. 

  • Bupropion has many potentially hazardous drug interactions. Tell the prescribing healthcare provider and pharmacist about all prescription drugs, over-the-counter medications, and supplements being taken before starting bupropion, particularly:

    • Opioids

    • Benzodiazepines

    • Tricyclic antidepressants

    • Other antidepressants, particularly amantadine

    • Antipsychotics

    • Drugs that treat heart rhythm problems, particularly flecainide or propafenone

    • Beta blockers

    • Corticosteroids

    • The antiseizure medications carbamazepine, phenytoin, and phenobarbital

    • Clopidogrel, digoxin, efavirenz, levodopa, lopinavir, nicotine patch, Paxlovid, ritonavir, tamoxifen, theophylline, ticlopidine

  • Avoid alcohol when using bupropion. There’s a small risk that the combination will reduce alcohol tolerance or produce psychiatric adverse effects.

  • Tell the doctor if you consume stimulants like caffeine or nicotine. The combination with bupropion may produce high blood pressure.

Find more information about bupropion interactions here.

Bupropion side effects

Serious side effects

Talk to the prescriber if you notice any signs or symptoms of a possible serious side effect of bupropion, including:

  • Thoughts of hurting yourself, worsening depression, severe agitation, aggression, unusual behaviors, 

  • Sudden increase in energy, racing thoughts, trouble sleeping, grandiose thoughts, pressured speech

  • Seeing or hearing things that are not there, feeling like people are against you, and confusion

  • Seizures

  • Eye pain, vision changes, swelling, or redness around the eye

  • Chest pain, trouble breathing, fast, slow, or uneven heartbeat

  • High blood pressure

  • Muscle or joint pain, fever, rash, swollen lymph glands, mouth sores, sores around the eyes

  • Blistering, peeling, red skin rash

  • Allergic reaction: rash, itching, swollen lymph glands, lip or tongue swelling, chest pain, trouble breathing

Less serious side effects

  • Agitation

  • Headache

  • Trouble sleeping

  • Dry mouth

  • Constipation

  • Weight changes

  • Nausea

  • Vomiting

  • Excessive sweating

  • Shaking

  • Appetite loss

  • Blurred vision

  • Tremor

  • Sore throat

  • Runny nose

  • Dizziness

Find more information about bupropion side effects here.

Sources:

Medically reviewed by Leslie GreenbergMD
Board-Certified Family Physician

Leslie Greenberg, MD, is a board-certified practicing family physician with more than 25 years of doctoring experience. She was a psychology major at Northwestern University near Chicago, then graduated with an MD from the University of Nevada School of Medicine. She completed her family medicine residency at St. Joseph Hospital in Wichita, Kansas. She has trained more than 350 family medicine resident-physicians, been in private practice, and delivered babies for 22 years.

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