No. Melatonin does not cause dependency, which is common with other sleep aids. People who use melatonin typically do not experience cravings or withdrawal symptoms when they stop using it. However, it is possible to become reliant on melatonin psychologically if you believe you can’t sleep without it. This reliance is more about habit formation rather than a physical addiction. Use melatonin as recommended. Take it on a short-term basis or occasionally to avoid becoming dependent on it for sleep.