I have an overactive inner voice when I’m trying to go to sleep too, and I don’t have ADHD. I think it’s the result of long to-do lists, perfectionism, and anxiety.
My son has always had trouble sleeping. He takes melatonin regularly, but also uses Celestial Seasonings Sleepytime EXTRA tea (has to be the extra). It’s helpful.
I’ve started using CBD oil and a little before bed helps me fall asleep a lot faster. I also play a mindfulness session (using the Insight Timer app) or Gregorian chants. If there’s some noise to focus on, it keeps my mind from running as rampant.
Here are some more insights specific to ADHD:
ADDitude Community Moderator, Parenting ADHD Trainer & Author, Mom to teen w/ ADHD, LDs, and autism