Bupropion; Uses, Dosage, Side Effects, Drug Interactions

Last updated: February 7, 2026Reviewed date: February 7, 2026Reading time: 7 min read
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Bupropion is an aminoketone antidepressant that is widely used in therapy of depression and smoking cessation. Bupropion therapy can be associated with transient, usually asymptomatic elevations in serum aminotransferase levels and has been linked to rare instances of clinically apparent acute liver injury.This agent does not inhibit monoamine oxidase and,...

For severe symptoms, danger signs, pregnancy, child illness, or sudden worsening, seek urgent medical care.

বাংলা রোগী নোট এখনো যোগ করা হয়নি। পোস্ট এডিটরে “RX Bangla Patient Mode” বক্স থেকে সহজ বাংলা সারাংশ যোগ করুন।

এই তথ্য শিক্ষা ও সচেতনতার জন্য। এটি ডাক্তারি পরীক্ষা, রোগ নির্ণয় বা প্রেসক্রিপশনের বিকল্প নয়।

Article Summary

Bupropion is an aminoketone antidepressant that is widely used in therapy of depression and smoking cessation. Bupropion therapy can be associated with transient, usually asymptomatic elevations in serum aminotransferase levels and has been linked to rare instances of clinically apparent acute liver injury.This agent does not inhibit monoamine oxidase and, compared to classical tricyclic antidepressants, is a weak blocker of the neuronal uptake of serotonin and norepinephrine. Buproprion also weakly inhibits the neuronal reuptake of dopamine....

Key Takeaways

  • This article explains Mechanism of action of Bupropion in simple medical language.
  • This article explains Indications of Bupropion in simple medical language.
  • This article explains Contra-Indications of Bupropion in simple medical language.
  • This article explains Dosage of Bupropion in simple medical language.
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Emergency safety firstUrgent warning signs are highlighted below.

Seek urgent medical care if you notice

These warning signs are general safety guidance. Local emergency numbers and clinical judgment should always come first.

  • Severe symptoms, breathing difficulty, fainting, confusion, or rapidly worsening illness.
  • New weakness, severe pain, high fever, or symptoms after a serious injury.
  • Any symptom that feels urgent, unusual, or unsafe for the patient.
1

Emergency now

Use emergency care for severe, sudden, rapidly worsening, or life-threatening symptoms.

2

See a doctor

Book a professional medical evaluation if symptoms persist, worsen, recur often, affect daily activities, or occur in a high-risk patient.

3

Learn safely

Use this article to understand possible causes, tests, treatment options, prevention, and questions to ask your clinician.

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Definition

Bupropion is an aminoketone antidepressant that is widely used in therapy of depression and smoking cessation. Bupropion therapy can be associated with transient, usually asymptomatic elevations in serum aminotransferase levels and has been linked to rare instances of clinically apparent acute liver injury.This agent does not inhibit monoamine oxidase and, compared to classical tricyclic antidepressants, is a weak blocker of the neuronal uptake of serotonin and norepinephrine. Buproprion also weakly inhibits the neuronal reuptake of dopamine.

Bupropion is a medication primarily used as an antidepressant and smoking cessation aid.  It is one of the most frequently prescribed antidepressants in the United States and Canada, although in many countries this is an off-label use. It is an effective antidepressant on its own but is also popular as an add-on medication in cases of incomplete response to first-line SSRI antidepressants. Bupropion is taken in tablet form and is available only by prescription in most countries.

Mechanism of action of Bupropion

Bupropion selectively inhibits the neuronal reuptake of dopamine, norepinephrine, and serotonin; actions on dopaminergic systems are more significant than imipramine or amitriptyline whereas the blockade of norepinephrine and serotonin reuptake at the neuronal membrane is weaker for bupropion than for tricyclic antidepressants. The increase in norepinephrine may attenuate nicotine withdrawal symptoms and the increase in dopamine at neuronal sites may reduce nicotine cravings and the urge to smoke. Bupropion exhibits moderate anticholinergic effects.

Indications of Bupropion

Contra-Indications of Bupropion

  • Spread of cancer to the brain
  • Tumor of the brain or spinal cord
  • Symptoms from alcohol withdrawal
  • Mild degree of Mania
  • Manic-depression
  • Mental disorder with loss of normal personality & reality
  • Having thoughts of suicide
  • Alcoholism
  • Narcotic addiction
  • Anorexia nervosa
  • Bulimia
  • Feeling anger toward something
  • Lower seizure threshold
  • Closed angle glaucoma
  • high blood pressure
  • Heart attack
  • Severe liver disease
  • Seizures
  • Weight loss
  • Seizure caused by sudden withdrawal of benzodiazepine
  • Stimulant drug dependence
  • Sedative drug dependence
  • risk of angle-closure glaucoma due to narrow angle of anterior chamber of eye

Dosage of Bupropion

Strengths: 75 mg; 100 mg; 150 mg;  200 mg ;300mg; 400mg; 450mg.

Smoking Cessation

Sustained-release tablets

  • Initial dose: 150 mg orally once a day for 3 days, increased to 150 mg orally twice a day
  • Maintenance dose: 150 mg orally twice a day
  • Maximum dose: 300 mg/day; maximum single dose should not exceed 150 mg
  • Duration of therapy: 7 to 12 weeks

Depression

Immediate-release tablets

  • Initial dose: 100 mg orally twice a day, increase if necessary after 3 days to 100 mg orally three times a day.
  • Maintenance dose: 100 mg orally three times a day
  • Maximum dose: 450 mg/day in up to 4 divided doses; single doses should not exceed 150 mg

Sustained-release tablets

  • Initial dose: 150 mg orally once a day in the morning, increase if necessary after 3 days to 150 mg orally twice a days
  • Maintenance dose: 150 mg orally twice a day
  • Maximum dose: 400 mg/day; maximum single dose should not exceed 200 mg

Extended-release tablets

  • Initial dose: 150 mg orally once a day in the morning, increase if necessary after 4 days to 300 mg orally once a day.
  • Maintenance dose: 300 mg orally once a day
  • Maximum dose: 450 mg/day

Seasonal Affective Disorder

Extended-release tablets

  • Initial dose: 150 mg orally once a day in the morning, increased if necessary after 7 days to 300 mg orally once a day
  • Maintenance dose: 150 to 300 mg orally once a day
  • Maximum dose: 300 mg/day

Side Effects of Bupropion

The most common

 Common

Rare

  • Buzzing or ringing in the ears
  • headache (severe)
  • skin rash, hives, or itching
  • Confusion
  • false beliefs that cannot be changed by facts
  • having extreme distrust of people
  • seeing, hearing, or feeling things that are not there
  • seizures
  • trouble concentrating

Drug Interactions of Bupropion

Bupropion may interacts with following drugs, supplyments & may change the efficacy of drugs

This is not a complete list of all drug interactions of bupropion. Ask your doctor for more information.

Pregnancy & Lactation of Bupropion

FDA Pregnancy Catagory C

Pregnancy

This medication falls into category C. In animal studies, pregnant animals were given this medication and had some babies born with problems. No well-controlled studies have been done in humans. Therefore, this medication may be used if the potential benefits to the mother outweigh the potential risks to the unborn child.

Lactation

Limited information indicates that maternal bupropion doses of up to 300 mg daily produce low levels in breast milk and would not be expected to cause any adverse effects in breastfed infants. However, there is little-reported use in breastfed newborn infants and case reports of a possible seizure in partially breastfed 6-month-old. If bupropion is required by a nursing mother.

References

 

Bupropion; Uses, Dosage, Side Effects, Drug Interactions

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A simple rural-patient checklist to help you explain symptoms clearly, ask better questions, and avoid unsafe self-treatment.

Safety note: This is not a prescription or diagnosis. For severe symptoms, pregnancy danger signs, children with serious illness, chest pain, breathing difficulty, stroke-like weakness, or major injury, seek urgent care.

Which doctor may help?

Start with a registered doctor or the nearest qualified health center.

What to tell the doctor

  • Write when the problem started and how it changed.
  • Bring old prescriptions, investigation reports, and current medicines.
  • Write allergies, pregnancy status, diabetes, kidney/liver disease, and major past illnesses.
  • Bring one family member if the patient is weak, elderly, confused, or a child.

Questions to ask

  • What is the most likely cause of my symptoms?
  • Which danger signs mean I should go to hospital quickly?
  • Which tests are necessary now, and which can wait?
  • How should I take medicines safely and what side effects should I watch for?
  • When should I come for follow-up?

Tests to discuss

  • Vital signs: temperature, pulse, blood pressure, oxygen saturation
  • Basic physical examination by a clinician
  • CBC, urine test, blood sugar, or imaging only when clinically needed

Avoid these mistakes

  • Do not use antibiotics, steroid tablets/injections, or strong painkillers without proper medical advice.
  • Do not hide pregnancy, kidney disease, ulcer, allergy, or blood thinner use.
  • Do not delay emergency care when danger signs are present.

Medicine safety and first-aid guide

This section is for patient education only. It does not replace a doctor, pharmacist, or emergency care.

Safe first steps

  • Stop activity and seek urgent medical evaluation.
  • Chest pain should not be managed only with home medicine.
  • Discuss ECG and cardiac blood tests with emergency care when appropriate.

OTC medicine safety

  • Do not take random painkillers to hide chest pain before medical evaluation.

Avoid these mistakes

  • Do not start antibiotics without a proper medical decision.
  • Do not use steroid tablets or injections casually for quick relief.
  • Do not delay emergency care because of home remedies.

Get urgent help if

  • Chest pressure, sweating, breathlessness, fainting, pain spreading to arm/jaw/back, or known heart disease needs emergency care.
Medicine names, dose, and timing must be decided by a qualified clinician or pharmacist after checking age, pregnancy, allergy, other diseases, and current medicines.

For rural patients and family caregivers

Patient health record and symptom diary

Write your symptoms, medicines already taken, test results, and questions before visiting a doctor. This note stays on your device unless you print or copy it.

Doctor to discuss: Doctor / qualified healthcare provider
Tests to discuss with doctor
  • Basic vital signs: temperature, pulse, blood pressure, oxygen level if needed
  • Relevant blood, urine, imaging, or specialist tests only after clinical assessment
Questions to ask
  • What is the most likely cause of my symptoms?
  • Which warning signs mean I should go to emergency care?
  • Which tests are really needed now?
  • Which medicines are safe for my age, pregnancy status, allergy, kidney/liver/stomach condition, and current medicines?

Emergency warning signs such as chest pain, severe breathing difficulty, sudden weakness, confusion, severe dehydration, major injury, or loss of bladder/bowel control need urgent medical care. Do not wait for online information.

Safe pathway to proper treatment

Care roadmap for: Bupropion; Uses, Dosage, Side Effects, Drug Interactions

Use this simple roadmap to understand the next safe steps. It is educational and does not replace examination by a doctor.

Go to emergency care if you notice:
  • Severe or rapidly worsening symptoms
  • Breathing difficulty, chest pain, fainting, confusion, severe weakness, major injury, or severe dehydration
Doctor / service to discuss: Qualified healthcare provider; specialist depends on symptoms and examination.
  1. Step 1

    Check danger signs first

    If danger signs are present, seek emergency care and do not wait for online information.

  2. Step 2

    Record the symptom story

    Write when symptoms started, severity, medicines already taken, allergies, pregnancy status, and test results.

  3. Step 3

    Visit a qualified clinician

    A doctor, nurse, or qualified healthcare provider can examine you and decide which tests or treatment are needed.

  4. Step 4

    Do only useful tests

    Do tests after clinical assessment. Avoid unnecessary tests, random antibiotics, or repeated medicines without diagnosis.

  5. Step 5

    Follow up and return early if worse

    If symptoms worsen, new warning signs appear, or treatment is not helping, return for review quickly.

Rural patient practical tips
  • Take a written symptom diary and all previous prescriptions/test reports.
  • Do not hide medicines already taken, even herbal or over-the-counter medicines.
  • Ask which warning signs mean urgent referral to hospital.

This roadmap is for education. A real diagnosis and treatment plan requires history, examination, and clinical judgment.

RX Patient Help

Ask a health question safely

Write your symptom story. A health professional or site editor can review it before any answer is prepared. This box is not for emergency care.

Emergency first: Severe chest pain, breathing trouble, unconsciousness, stroke signs, severe injury, heavy bleeding, or rapidly worsening symptoms need urgent local medical care now.

Frequently Asked Questions

Is this article a replacement for a doctor?

No. It is educational content only. Patients should consult a qualified clinician for diagnosis and treatment.

When should I seek urgent care?

Seek urgent care for severe symptoms, rapidly worsening condition, breathing difficulty, severe pain, neurological changes, or any emergency warning sign.

References

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