Symptoms of overdose can vary depending on the class of antidepressant:
SSRI Overdose: Symptoms may include nausea, vomiting, dizziness, agitation, and seizures. In severe cases, serotonin syndrome, characterized by high fever, muscle rigidity, and altered mental status, can occur. SNRI Overdose: Similar to SSRIs, but may also include hypertension and tachycardia. TCA Overdose: These are particularly dangerous and can cause life-threatening cardiac arrhythmias, severe hypotension, and central nervous system depression. MAOI Overdose: Symptoms include severe hypertension or hypotension, hyperthermia, and potentially fatal serotonin syndrome.