For further detailed chemical analysis or therapeutic uses, resources like DrugBank provide comprehensive data on its mechanism of action.

: In the U.S., melatonin is classified as a food supplement rather than a medication, meaning it is not regulated by the FDA .

Melatonin functions through several critical biological pathways:

: Melatonin modulates both innate and adaptive immunity, specifically reducing excessive innate immune responses through negative regulatory functions.

: It can rescue the peroxynitrite anion, leading to non-specific inhibition of inflammation.

: It is widely used to treat insomnia and mitigate the effects of artificial light at night (ALAN), which disrupts circadian rhythms.

: It acts as a potent free radical scavenger, directly detoxifying reactive oxygen species (ROS) and reactive nitrogen species (RNS).