<s>[INST] My ten yr old son has been on vyvanse for approximately 4 weeks. He seems to have become more anxious and has displayed moments of anger. This is not his general behaviour. He has a computer at school and today he was so angry he threw it on the ground.....very odd for his to do this. He is on vyvanse for in attentiveness at school. Can you tell me if this behaviour. Could be as a result of vyvanse Thank you Michelle [/INST] Hello Welcome to Health Care Magic Vyvanse is a good medicine for ADD. It belongs to amphetamine group. As you have mentioned that he has recently shown episodes of anger. He even threw the computer on ground. It may occur either due to poor control of his ADD or due to some mood episode. In a number of patients of ADD mood symptoms may develop. They may show anger outbursts, irritability, arrogant behavior. I will advise you to take him to Psychiatrist for proper evaluation. Medicines like Sodium Valporate which is a mood stabilizer can be given in such cases to decrease anger and aggression. Thanks Dr. Seikhoo Bishnoi </s>