According to ABC News , scientists say the U.S. Food and Drug Administration (FDA) should take warnings about the stop-smoking drug Chantix up a notch, citing data showing that the drug increases suicidal behavior and depression far more than other drugs and methods designed to help smokers quit. Chantix, also called varenicline, has been hotly debated since 2007, when experts first raised questions about the long-term safety of the drug and its connection to cardiovascular problems and vision lapses. Since then, studies have reported that patients taking Chantix are at increased risk of depression and suicidal thoughts. Anecdotally, patients report wild dreams, inexplicable violent behavior and other psychological disturbances while on the drug. In 2009, the FDA placed a "black box" warning label on Chantix and another drug, Zyban, cautioning doctors and patients about the risk of depression, hostility and suicidal thoughts. But some researchers say these warn
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