Hello, Valparin contains Valproic Acid, it is commonly used to help prevent or control seizures and as a mood stabilizer. Patients using Valparin may encounter unwanted side effects such as: • Hair loss • Nausea • Diarrhea • Drowsiness • Upset stomach • Increased appetite or weight gain • Headaches Contact a doctor immediately should side effects persist or encounter more severe side effects such as: • Confusion • Aggression or agitation • Easy bleeding or bruising • Jaundice • Tremors • Irregular or absent menstrual periods • Worsening of fits AS to stopping it, that depends on when and how it is done. If it is just suddenly withdrawn, rather than having the dose tapered, it could result in a rebound effect that may cause you to have more seizures, so you must carefully follow the doctors instructions for duration of use and stopping the medication