FDA : Chantix and Zyban will carry warnings about mental health risks . The agency also is requiring Pfizer Inc. , which makes Chantix , and GlaxoSmithKline , maker of Zyban , to conduct a study looking at how often these serious symptoms occur . Risks include depression and suicidal thoughts when using the drugs . Drug makers must conduct study how often these serious symptoms occur . Comment:
FDA : Chantix and Zyban will carry warnings about mental health risks . Risks include depression and suicidal thoughts when using the drugs . Drug makers must conduct study how often these serious symptoms occur . Comment: