Hi . We're not medical experts, so keep that in mind. I don't take melatonin often but, when I do, I usually take 5 mg, sometimes, 10 mg, and I always stick with the same brand. Since melatonin is a not a drug, it isn't regulated. So, it's important to find a brand you can trust. Here is an article from the National Institutes of Health with tips for finding trustworthy supplements: https://ods.od.nih.gov/factsheets/WYNTK-Consumer/. I hope this helps. Keep in mind that melatonin can help you fall asleep, but it won't keep you asleep. If you do decide to use it, let me know how it goes. I'll be thinking of you. - Lori (Team Member)