What are the most common types of side effects from SSRIs?

Choice A reason: Diarrhea and weight gain are less common with SSRIs. While some SSRIs may cause gastrointestinal upset via serotonin receptor stimulation in the gut, weight gain is more associated with atypical antipsychotics. SSRIs primarily affect serotonin reuptake, leading to central and anticholinergic-like effects, not these symptoms predominantly. Choice B reason: SSRIs, by inhibiting serotonin reuptake, cause dizziness, drowsiness, and dry mouth due to central nervous system effects and mild anticholinergic activity. Dizziness and drowsiness result from serotonin modulation in the brainstem, while dry mouth reflects peripheral serotonin effects on salivary glands, making these the most common side effects. Choice C reason: Convulsions and respiratory difficulties are rare with SSRIs. Seizures may occur in overdose due to excessive serotonin, but not typically at therapeutic doses. Respiratory issues are not associated, as SSRIs primarily affect serotonin pathways, not respiratory centers, making this choice inaccurate for common side effects. Choice D reason: Jaundice and agranulocytosis are not common SSRI side effects. These are associated with drugs like chlorpromazine, affecting liver or bone marrow. SSRIs primarily cause serotonin-related central and peripheral effects, not hepatotoxicity or bone marrow suppression, making this choice irrelevant to their pharmacological profile.