Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Comparison of melatonin profiles at 0, 1, and 3 mg. Endogenous and supplemental melatonin curves are superimposed for participant #8. Note that by 2 a.m., the melatonin profile after administration of 1 mg supplemental melatonin has returned to endogenous values. By 5 a.m., the melatonin profile after administration of 3 mg supplemental melatonin has returned to endogenous values
