If you are interested in trying CBN gummies for sleep, you should follow the dosage recommendations by the manufacturer and start with a low dose. The optimal dose of CBN may vary depending on your body weight, metabolism, tolerance, and desired effects. Most CBN gummies contain between 5mg to 15mg of CBN per serving. You should also consult your doctor before taking CBN gummies, especially if you have any medical conditions or are taking any medications. CBN gummies may interact with some drugs, such as sedatives, antidepressants, and blood thinners.