I have a lot of sleeping issues, and this has been the most successful product I've tried so far. It doesn't always get me right off to sleep, but it is a heck of a lot better than sleeping pills. I never feel groggy and it does seem to be much more effective than prescription sleeping pills or other types of over the counter sleep aids. I never feel like a drugged out zombie the next morning after taking this, so it definitely allows me to function better during the day than prescriptions. Also, the sleep I do get while using this feels so much more natural.