Thank you for your question and welcome to ADHDCentral.com.   I understand your concern in giving your 7 year old medication for ADHD. Many parents feel the same concern you do. There have been conflicting studies on long term use of stimulant medication in children. Some studies have shown some children have a slight stunted growth when taking stimulant medications, but children normally catch up later.   Generally, ADHD medications are well tolerated and do not cause problems, when used as prescribed.   For more information:   Do Stimulants Stunt Growth? Heart Check ups Before Taking Stimulant Medications   Does Stimulant Medication Lead to Substance Abuse? FDA Recommends Continuing Medication Based on Limitations on New Study   It is important to weigh the risks of stimulant medications with the risks of untreated ADHD.   Eileen