It's amazing.
My daughter has struggled with sleep since she was a toddler. She is now 14. I have given her increasing doses of melatonin all her life. We were up to 4 mg and she still wasn't sleeping super well and would often wake up groggy and grouchy. Last fall we found Rookie at an event and they gave us a few samples to try. It has now been 8 months and it works so well that sometimes my daughter doesn't even have to take it to be able to sleep. We had her start wearing a watch to track her sleep a couple of years ago. She gets better sleep and is no longer groggy or grouchy when she wakes up. It has been a life saver. Thank you Rookie!