Final answer:
A common side effect leading to the discontinuation of SSRIs early in treatment is nausea, which can be quite bothersome for patients.
Step-by-step explanation:
One common side effect leading to the discontinuation of SSRIs (Selective Serotonin Reuptake Inhibitors) early in treatment is nausea. This side effect, along with others such as dizziness, insomnia, and loss of sexual desire, can be particularly bothersome during the initial phase of therapy. SSRIs, like Prozac, Paxil, and Zoloft, work by increasing serotonin levels in the central nervous system to treat depression, but they can also produce side effects that some patients find intolerable. Support and information regarding mental health conditions should accompany treatment to help manage any adverse effects.