Hormonal Changes and ADHD Medication Side Effects ADHD medications, while beneficial in managing outward indications of attention deficit hyperactivity disorder (ADHD), feature a array of unwanted effects that patients and caregivers need to keep yourself updated of. One of the most common issues is insomnia or disrupted sleep patterns. Stimulant medications like methylphenidate (Ritalin) and amphetamine salts (Adderall) are particularly known...