Risperidone is a medication primarily used to treat mental health conditions such as schizophrenia, bipolar disorder, and irritability associated with autism. It belongs to a class of drugs known as atypical antipsychotics, which work by balancing certain chemicals in the brain to help improve mood, thoughts, and behavior. This medication is available in various forms, including tablets and a liquid solution. Common side effects may include drowsiness, weight gain, and increased appetite. It is important for patients to follow their healthcare provider's instructions and report any unusual symptoms while taking risperidone.