Which of the following is a common side effect of SSRIs?

SSRIs, or selective serotonin reuptake inhibitors, are commonly prescribed antidepressants that primarily work by increasing serotonin levels in the brain. While they are generally well-tolerated, they can produce a variety of side effects. Drowsiness is a recognized common side effect of SSRIs. This sedation can be due to the medication’s effects on neurotransmitter systems that regulate wakefulness and alertness.

In contrast, increased libido is not typically associated with SSRIs. In fact, they can often lead to a decrease in sexual desire due to their action on serotonin receptors. Constipation can occur but is less prominent as a direct, common side effect of SSRIs compared to other gastrointestinal disturbances like diarrhea. Rash is considered a less common side effect and may indicate an allergic reaction or sensitivity to the medication; it is not a standard or frequent response to SSRIs. Therefore, drowsiness stands out as a more common and recognized side effect associated with the use of these antidepressants.