Selective Serotonin Reuptake Inhibitors

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Abstract
Depression is a common and significant health problem associated with impairment in a patient’s ability to function in their role (e.g. student, worker, homemaker), and may have a fatal outcome in the case of suicide. Recently there has been progress in developing new antidepressant medications, such as the selective serotonin reuptake inhibitors (SSRIs). These agents, while no more effective than the tricyclic antidepressant (TCA) drugs, are generally better tolerated than traditional medications used to treat depression. Further, because of their adverse effect profiles, they are generally better tolerated, and safer in overdose, than the TCAs. In response to concerns about aggregate healthcare costs, formularies are being employed to control the direct costs of prescription drugs. When direct drug costs alone are considered, the TCAs are initially less expensive than the SSRIs. However, compared with those taking SSRIs, patients taking TCAs withdraw from treatment more frequently, have more accidents, experience more adverse effects that require treatment, and are more likely to die from an overdose (if it occurs). Furthermore, unsuccessful treatment may be due to noncompliance, which is frequently related to adverse effects. Medications have effects on indirect costs. For example, adverse effects may impair productivity and lead to accidents in the home and at work. There are increased hospital and indirect costs of drugs used in overdose. Medication non-compliance may lead to failure to recover from depression, which results in ongoing expense to the state in the form of disability benefit payments. The largest cost savings are often associated with indirect costs, such as reduced benefit payments and improved productivity and earnings when treatment is successful. Taking all these considerations together, it does not appear that TCAs, taken over time, are any less expensive than the newer antidepressant medications.

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