I’ve been taking Melatonin before bed for over a year. Over time, I have found that 15 mg is the perfect dose. My pharmacist says this is fine. We have these 10 mg tablets. I was taking 2 before bed. Forthe past few days, I’ve been taking only 1. I notice that I’m waking up early and not able to sleep again. I guess it’s back to 2 again.