Quillivant 20 mg or 20 mL? Starting dose is 4 mL (which is 20mg). The good thing about Quillivant is you can fine tune the dose since it’s a liquid. You should call the prescribing doctor to discuss this as soon as possible. They might have you lower the dose and see if heart rate improves.
ADDitude Community Moderator, Author & Mentor on Parenting ADHD, Mom to teen w/ ADHD, LDs, and autism