I have taken p high doses of melatonin (20-40mg/night) with no negative effects. Melatonin production doesnt have a negative feedback loop so supps will not affect your production. I am gonna get shit for saying this because everyone always says the opposite, but it is this guy's work.

https://www.researchgate.net/profile/Jose-Cipolla-Neto

https://pubmed.ncbi.nlm.nih.gov/30215696/

Also, this is a good book. 🫡

Melatonin: Miracle Molecule: Transform your life with 'high dose' Melatonin. Benefits beyond sleep as the bodies master stress resilience molecule for healing & longevity. https://a.co/d/cwrsksY