Since you have been on long-term treatment for depression/schizophrenia and are still experiencing symptoms like poor memory, difficulty understanding, headache, blurred vision, and weight gain, it may be due to either incomplete control of the condition or side effects of the medicines. It is important not to stop or change these medicines on your own, but to consult your psychiatrist for a detailed review. The doctor may adjust the doses, change medications, or add supportive treatments to improve your symptoms and reduce side effects. Regular follow-up, good sleep, a balanced diet, light exercise, and cognitive activities (like reading or memory exercises) can also help improve overall functioning. A proper evaluation will help find the right balance between symptom control and quality of life.