May cause drowsiness and dizziness, especially on standing (rise slowly). Do not drive until you know your response, and avoid alcohol. Report movement problems (stiffness, tremor, restlessness), prolonged or painful erection (seek urgent care), or signs of a rare serious reaction (high fever, muscle rigidity, confusion). It can affect weight, blood sugar and cholesterol (monitored over time), and raise a hormone (prolactin). Tell your doctor about heart problems, diabetes, Parkinson's, seizures, pregnancy and all medicines. Not for dementia-related psychosis in the elderly without specialist advice. This product information is for general guidance only and does not replace professional medical advice. Always consult a qualified healthcare provider before starting any new medication or supplement. Keep all medicines out of reach of children.