Surprised no one has brought up melatonin yet. There is an ick factor because it was originally obtained from cow brains, but within the last 20 years or it has been found in most plants and animals; in humans 99% is made outside the pineal gland. It is an antioxidant, immune system regulator, anti-cancer agent, and yes, regulator of sleep cycles. Fascinating history here
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6481276/
That article is from 2019; since then it has come under fire for being a possible cheap covid drug. So I would not look for any objective information from Google, Wikipedia, or teaching hospitals. Look for earlier articles, or current sites that assert early covid can be treated in many ways.
Levels decrease with age so supplementation for immune health makes sense. A big dose can give gut-wrenching symptoms for days, so start small, 0.3mg and work up to 3 or 5 mg. FLCCC protocol has 6-12mg for hospitalized covid patients. Some ICUs give much more than that. There seems to be no established toxic dose.
I take anywhere from 3 to 25 mg when I need to sleep but don't feel drowsy. If nothing else it calms my thinking and stops tossing and turning. The higher dose is for when you want colorful dreams :)
