Anti-anxiety drugs can cause hallucinations, delusional thinking, confusions, aggression, violence, hostility, agitation, irritability, depression and suicidal thinking. They are also some of the most difficult drugs to withdraw from.
There have been 39 warnings from 8 countries (Australia, Canada, Denmark, Germany, Ireland, New Zealand, United Kingdom and United States) and the European Union warning that anti-anxiety drugs cause harmful side effects. These include the following (note that some warnings cite more than one side effect, so the list below may not be equal to the total number of warnings):
There are 79 studies from 19 countries (Australia, Canada, China, Colombia, Croatia, Denmark, Finland, France, Germany, India, Ireland, Italy, Japan, New Zealand, South Korea, Sweden, Taiwan, United Kingdom and United States) showing that anti-anxiety drugs cause harmful side effects. These include the following (note that some studies cite more than one side effect, so the list below may not be equal to the total number of studies):
There have been 35,110 Adverse Drug Reactions in connection with anti-anxiety drugs that have been reported to the FDA’s Adverse Event Reporting System (MedWatch), between 2004 and 2012.
The FDA estimates that less than 1% of all serious events are ever reported to it, so the actual number of side effects occurring are most certainly higher.
Source: Physicians Desk Reference, National Institutes of Health’s Medline Plus, and/or the drug label.