Instant release is only meant to last about 4 hours. Most people take it more than once a day. With ADHD stimulant medication, you have to start at the lowest dose and increase only if and when needed. There are two types of stimulants: amphetamine (Adderall, Vyvanse, Evekeo…) and methylphenidate (Ritalin, Concerta, Quillivant…). Almost everyone does well on one type or the other, but not both.It could be that amphetamines aren’t best for you.
Talk with your prescribing doctor about all of this and decide next steps together.
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism