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Zyban Side Effects
Serious Side Effects
Some side effects of Zyban, while not as common, are potentially serious and should be reported to your healthcare provider. These include but are not limited to:- Seizures (see Zyban Seizures)
- Suicidal thoughts or behavior (see Zyban and Suicide)
- Anxiety, agitation, or panic attacks
- Hostility or aggressiveness
- Engaging in unusual or dangerous activities
- Restlessness or an inability to sit still
- Extreme elation or feelings of happiness that may switch back and forth with a depressed or sad mood
- Other unusual changes in behavior
- Hallucinations
- A rapid heart rate
- Chest palpitations
- Difficulty sleeping
- Feelings of jitteriness or restlessness
- Signs of an allergic reaction, including:
- Unexplained rash
- Hives
- Itching
- Unexplained swelling
- Wheezing
- Difficulty breathing or swallowing.
Rare Zyban Side Effects
Rare Zyban side effects occur in less than 1 percent of people taking the drug. Because these side effects are so uncommon, it is difficult to tell whether they are due to the medication or something else.Some of these rare side effects include but are not limited to:
- Low blood pressure (hypotension)
- Migraine headaches
- Acne
- Weight gain (see Zyban and Weight Gain)
- High blood sugar (hyperglycemia) or low blood sugar (hypoglycemia)
- Anemia
- Leg cramps
- Impotence (erectile dysfunction or ED) or a decreased sex drive (see Zyban Sexual Side Effects).
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD