The following side effects may get better over time as your body gets used to the medication. Let your healthcare provider know immediately if you continue to experience these symptoms or if they worsen over time.
Common Side Effects
- Trouble sleeping (40%)
- Runny nose (12%)
- Dry mouth (11%)
- Dizziness (10%)
- Nausea (9%)
- Trouble concentrating (9%)
- Anxiety (8%)
- Constipation (8%)
- Joint pain (5%)
- Strange dreams (5%)
Less Common Side Effects
- Nervousness
- Rash
- Itching
- Stomach pain
- Diarrhea
- Not feeling hungry
- Cough
- Sore throat
- Muscle pain
- Change in taste
Zyban serious side effects
Contact your healthcare provider immediately if you experience any of the following.
- Suicidal thoughts or behaviors
- Serious allergic reaction or skin reaction: sore throat, fever, fatigue, rash, hives, painful blisters, skin reddening, skin peeling, swollen lymph nodes, swelling of the face, trouble breathing
- Seizures
Source: DailyMed
The following Zyban side effects have also been reported
Side effects that you should report to your care team as soon as possible:
- Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
- Increase in blood pressure
- Mood and behavior changes—anxiety, nervousness, confusion, hallucinations, irritability, hostility, thoughts of suicide or self-harm, worsening mood, feelings of depression
- Redness, blistering, peeling, or loosening of the skin, including inside the mouth
- Seizures
- Sudden eye pain or change in vision such as blurry vision, seeing halos around lights, vision loss
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
- Constipation
- Dizziness
- Dry mouth
- Loss of appetite
- Nausea
- Tremors or shaking
- Trouble sleeping
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