- Used to treat insomnia
- Active ingredient: melatonin
- Take one to two hours before bedtime
- Not suitable for use in children
- Not to be used while pregnant or breastfeeding
Circadin is a medication that contains the active ingredient melatonin. Melatonin is a hormone naturally produced by your body that helps regulate your sleep-wake cycle. Circadin is used to treat primary insomnia in adults who are 55 years and older. If you have difficulty falling asleep and staying asleep, Circadin may help you improve the quality and duration of your sleep.