What to do if my son is aggressive and nervous while taking Brintelix?

Do not stop taking the medicine yourself or increase the dose yourself. Both solutions can worsen the health situation of the son. Such recommendations must be given by a doctor. If you have limited contact with your doctor, I encourage you to take advantage of the teleadvice offered, m.in. by the portal Gdziepolek.pl: https://www.gdziepolek.pl/telekonsultacja I do not know how old your son is. According to the materials from the manufacturer: "Patients treated with antidepressants, including vortioxetine, may also experience aggression, anger, agitation and irritability. The condition of patients and the course of the disease should be closely monitored. Patients (and their caregivers) should be advised to seek medical attention if aggressive/agitated behaviour occurs or worsens." I encourage you to read additional materials that may be useful: https://www.gdziepolek.pl/artykuly/depresja https://www.gdziepolek.pl/artykuly/czy-bac-sie-dzialan-niepozadanych-lekow