"my 18 year old son takes adderall 30 mg. time released . i am amazed by the change in him and so is he. he has not beeen taking it for a week now and i came to the sight to see what others are saying about it and from what i have read it can make u very irritable and such if u just stop like that and miss days or think u don&#039;t need it for some days and that totally explains to me the drastic change in my son this past week ( very grumpy and easily irritated ) thanks for all the comments."