Just as another data point, of no statistical value, but perhaps interesting for its anecdotal amusement value:
My wife started having a severe headache around the 11th of November. She always has a lot of headaches, but this didn't respond to caffeine or anything. A few days later, a coworker of hers let her know that she had tested positive. Since my wife was feeling worse, I took her to be tested. It took three days to get her results, which were positive. I figured there was no way I wouldn't already have it, so we took no special precautions to isolate from each other. I did get it, too.
I'm 63, she's a few years younger. But she's overweight and semi-diabetic, so I figured she'd have a rougher go from it.
Since I've been following this thing since late in 2019, I already knew that Vitamin D3 was important, and we both already had been taking it for years, anyhow because we live in a northern state, and both of our doctors had advised us many years ago that living here, we needed to take it. They even test for it in annual blood testing around here.
Coincidentally, we also both already took Famotidine every day for heartburn, and had for a few years. We started making sure we each were getting 40milligrams of zinc back in late 2019 because of the Covid-19 information that was coming out.
When I took my wife to be tested, we got a pamphlet from the county health department that recommended a number of things. Even though there aren't any peer-reviewed double-blind studies to show the efficacy of these things, what they recommended were:
Melatonin: 0.3mg per day, increasing as tolerated to 2mg at night.
Vitamin D3: 1000-3000iu per day. Safe upper limit, without knowing your own tolerance is 4000iu per day.
Vitamin C: 500iu twice per day.
Quercetin: 250mg/day, use with caution in patients with hypothyroidism. Prolonged high dose can (rarely) cause hypothyroidism.
Zinc: 50-75mg/day. After one month, decrease to 30-50mg/day.
Famotidine: 20-40mg/day.
If you actually have the virus, and are symptomatic at home:
Melatonin: 6-12mg at night. If this causes worsening restless leg syndrome, decrease dosage.
Vitamin D3: 1000-3000iu per day. Safe upper limit, without knowing your own tolerance is 4000iu per day.
Vitamin C: 500iu twice per day.
Quercetin: 250-500mg/day, use with caution in patients with hypothyroidism. Prolonged high dose can (rarely) cause hypothyroidism.
Zinc: 75-100mg/day. After one month, decrease to 30-50mg/day.
Famotidine: 40mg TWICE/day. Decrease dose if decreased kidney function noted.
Aspirin (ASA): 81 to 325mg/day unless contraindicated.
Monitor blood oxygen level: Using pulse oximetry. Use index or middle finger. Remove fingernail polish from the finger, and warm extremities before measuring. Observe for 30-60 seconds. Readings that are consistently below 90% or are downtrending must be evaluated by medical professionals.
We already were taking 5000iu/day of Vitamin D3 on the recommendation of both of our doctors for years. It's dark and nasty in the winter here, and barring a lot of skiing or the like, people are always deficient in Vitamin D3, especially in the winter.
We were already taking some Famotidine for heartburn.
We had been taking Zinc.
Neither of us had been taking Melatonin, or Quercetin (Which I'd never even heard of before, but it's supposedly a "zinc ionophore", and helps Zinc to enter cells the same way that Hydroxychloroquin does). We hadn't been taking daily aspirin previously.
Once we started monitoring my wife's blood oxygen, it was low. So I called the local health department where they were managing the outbreak here, They said to take her to the emergency room right away, which I did. She was admitted, and kept for several days. During that time, they actually gave her Remdesivir and dexamethasone. The Remdesivir is administered in the hospital as an IV infusion. The dexamethasone is simply tablets, and they sent her home with a prescription which we filled, and she took for a week after her release.
While in the ER, they gave her oxygen, and she said that cured her headache almost instantly, which tells me that the headache was a result of low oxygen concentration. She is STILL on oxygen at home, and her O2 sat drops into the 80s when she is off of it for very long, but she is going without it at times to wean herself off of it, but wears it most of the time at home, and especially at night. My feeling is that she's had low O2 sat for years, or all of her life, especially when sleeping, and that's why she has often woken up with headaches. Sleep apnea is common in her family. So she might benefit from staying on it at night forever (sort of like CPAP, but often as or more effective).
From the Covid-19, she suffered from weakness and lack of balance, but all of that is slowly getting better.
I didn't have things as bad. I had a slight sensation similar to mild asthma, had a fever that came and went rapidly, and the sensations that a person has when they have a fever.
Other people who have had it have described the same thing with the fever. Measure 102-103, and then 15 minutes later, no fever whatsoever, and on and on. So I think that's a characteristic of this virus. I never felt all that bad. Really, no pain or coughing like others have reported. However, at the end of it (as it often the case when I'm getting over almost anything), I had typical cold symptoms. Plugged up, yet runny nose, sneezing for a few days. And it was then that I lost my sense of smell. My sense of taste was not affected, but my formerly very sensitive sense of smell has pretty much vanished.
It's been two months, and my sense of smell still hasn't recovered. I can smell some things when very concentrated, and oddly, some subtle smells fairly well like bread. But, for example, poop, onions, garlic, etc., are completely absent. I cut up some onions the other night, and while my eyes burned, I couldn't smell a thing, even with the onions held right under my nose. It's bizarre.
I do think it's getting a bit better, but very very slowly, and some smells are not improving at all.
I have had increased fatigue the whole time, but that's getting better as well, so I got off easy.
Anyhow, that information may be of some value, but is statistically insignificant.