Apparently you can: https://rightasrain.uwmedicine.org/body/sleep/melatonin-overdose https://rightasrain.uwmedicine.org/body/sleep/melatonin-over... A study

Apparently you can: https://rightasrain.uwmedicine.org/body/sleep/melatonin-overdose https://rightasrain.uwmedicine.org/body/sleep/melatonin-over... A study of poison control calls in the U.S. found the number of melatonin poisoning–related calls increased six times from 2012 to 2021. Of these calls, more than 4,000 teens and children were hospitalized and two died. Signs of melatonin overdose include excessive sleepiness, vomiting and trouble breathing. Other side effects of both low and high doses of melatonin can include headaches, excessive sleepiness, blood pressure changes, gastrointestinal problems, changes in other hormone levels and mood problems,