SNRI Antidepressants Can Cause Dependence And Withdrawal Syndromes
Medically reviewed by: Marilyn Folk, BScN.
Last updated: April 3, 2019
Pharmaceutical companies maintained that SSRI and SNRI medications didn’t cause dependency. Yet, numerous studies found antidepressants had a high rebound rate due to the difficulty people had discontinuing them and staying off of them, suggesting there was a dependency aspect.
Research out today has confirmed SNRI antidepressants do cause dependency and withdrawal syndromes. This research hopes to make clinicians and patients more aware of the pitfalls associated with SNRI antidepressants.
You can read the press release for this research below:
Serotonin-noradrenalin reuptake inhibitors may cause dependence and withdrawal when stopped
The Authors conducted a systematic review examining electronic databases including PubMed, the Cochrane Library, Web of Science, and MEDLINE from the inception of each database to June 2017. Sixty-one studies met the criteria for inclusion. There were 22 double-blind randomized controlled trials, 6 studies where patients were treated in an open fashion and then randomized to a double-blind controlled phase, 8 open trials, 1 prospective naturalistic study, 1 retrospective study, and 23 case reports. Results showed that withdrawal symptoms occurred after discontinuation of any type of SNRI. The prevalence of withdrawal symptoms varied across reports and appeared to be higher with venlafaxine. Symptoms typically ensued within a few days from discontinuation and lasted a few weeks, also with gradual tapering. Late onset and/or a longer persistence of disturbances occurred as well. These findings highlight the need for clinicians to add SNRI to the list of drugs potentially inducing withdrawal symptoms upon discontinuation, together with other types of psychotropic drugs.
The leading author of the study, Giovanni A. Fava, MD (University of Bologna and University at Buffalo) comments: "this type of antidepressant drugs is widely used with the wrong assumption that they do not cause dependence and problems upon discontinuation. We should be more cautious in prescribing them and be aware of the problems that ensue when you stop them".
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REFERENCE:Giovanni A. Fava et al. Withdrawal Symptoms after Serotonin-Noradrenaline Reuptake Inhibitor Discontinuation: Systematic Review, Psychotherapy and Psychosomatics (2018). DOI: 10.1159/000491524
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