have you seen any bad side effects like tics or such? my 6 yr old son is starting this and i am trying to find out what other people's experience has been. this will be his first med for adhd. ## Hello, Soy! How are you and your son? He will most likely experience some side effects, such as nausea, headache, irritability, weight loss and insomnia, as listed by the FDA, they are all fairly common and should go away, as his body gets used to the medication. Can anyone that's taken this chime in?