Melatonin is one of the things Trump was given when he came down with COVID (or whatever the heck it was). Like MANY cheap and effective supplements, melatonin is far safer than most patented artificial drugs and more effective for a variety of conditions than many of the drugs are. "We have the cures" doesn't necessarily mean we have single-substance magic bullets (although we probably do, for some diseases or conditions), but rather that we have, ALREADY AVAILABLE, things that can do more to prevent and cure disease, slow aging, and improve your quality of life than you might imagine.

Melatonin is known for helping restore circadian rhythm and for healthy sleep. It does A LOT more, though, and Dr. Mercola's article at LewRockwell today is seriously worth reading. It's longish, so here are the highlights:

Melatonin ASAP after stroke or heart attack can reduce permanent damage

“If I had a heart attack and I had melatonin on my person, I would take melatonin,” Reiter says. “The question is how much? … This is not a recommendation to any of your patients, but I would not be hesitant about taking 50 milligrams at the time, and some subsequently for the next 24 hours, even during the day. Because you don’t want to lose any more heart cells than is absolutely necessary …. (Side note: SUBLINGUAL melatonin would put the melatonin to work faster than capsules or tablets. Also, Pre-treatment with PQQ, 20mg - 30mg per day regularly, also helps reduce damage from stroke and heart attack, per articles cited by Life Extension.) ​Reiter stresses that melatonin has no known toxic threshold, so even though we don’t know what the ideal dose is, we do know it’s safe even at high doses. Additionally, the timing of the dose will be important. The first dose should be taken immediately, but subsequent melatonin dosing should follow circadian biology, so around 10 a.m., 4 p.m., and before bed.

Melatonin can reduce damage from diabetes

Reiter notes he has diabetic colleagues who take 1 gram of melatonin daily to counteract the free radical damage caused by hyperglycemia. Keep in mind that melatonin does not treat the cause of the diabetes. It only helps to counteract the damage being caused.

​ Melatonin Is Also a Potent Antiviral

He has now treated more than 2,000 patients, very successfully, with melatonin.

The importance of melatonin in reference to COVID is that it is not specifically for [the original Wuhan strain]. The variants, Delta, Omicron, they’e viruses we think will respond. We currently have a paper in press where we showed that in animals, Zika virus toxicity is also prevented by melatonin, and we’ve checked four different coronaviruses in pigs.

That paper also shows that melatonin prevents the damage — the consequence — of those viruses. I think [melatonin] is generally a quite good antiviral agent and should be considered as useful. When President Trump was hospitalized with COVID, one of the molecules he was given was melatonin. Obviously, the physicians treating him knew this literature.”

​ Melatonin can also be useful in the prevention and treatment of cancer. See article for details. EDIT: Check out this video posted in a comment by Make_it_So on melatonin and cancer. 59 minutes or so, and worth watching even if you need to view it in short chunks for lack of time.

Note: Melatonin is cheap, "has no known toxic threshold", and is sold in many forms and dosages including liquids and gummies. It's also one of life's oldest molecules, being found even in plants and bacteria.