Do not continue taking Stemetil (Prochlorperazine) on your own, as it is meant for short-term use and may cause side effects if used for longer periods. Recurring dizziness after stopping the medication suggests an underlying cause that needs further evaluation. Please consult your doctor before restarting or adjusting your treatment. In the meantime, try to rise slowly from sitting or lying positions and avoid activities that could be risky if you feel dizzy.