Hey everybody Iam updating on how the Ritlin is .Okey the very first day I took ritlin I had severe dizzy .Now on it for too months now I dont feel dizzynes and I can focus on my school now feel very good that I can focus and stay In college cause before I quit cause I could not focus and I was in a days staring at other things when I was in school.Iam the 20mg which is a good dosage for me and I could not belive that it did not make my blood pressure be high it made it low .Thanks 2 the people who was replying and giving me advice huggs to yall.