The way to know you're ok at your current dosage is to take a blood test, ideally at least twice a year (summer and winter) so you can make sure you're not overdosing.
I haven't had a blood test in many years, so currently I am only on 3000 IU. It's a big difference, in one week I have 21,000 IU and you have 70,000 IU, I am only taking 30% of the dose you are.
Get a blood test!
I don't think running diagnostics on a human should be this hard, we run diagnostics on our apps, computers, cars more often than ourselves. I wonder if people are working on making this process a lot easier (or if it's even possible, I have zero knowledge of the space).
Here are a few alternatives you can look into, mentioned in this discussion: https://news.ycombinator.com/item?id=15868143
[0]: https://www.privatemdlabs.com
[1]: http://www.directlabs.com/
[2]: https://www.walkinlab.com/
(I also dislike the limitations as I feel like people are more capable of helping themselves in a lot of these situations)
Google "LabCorps" near you.
You can walk in and get a basic metabolic panel in about 15 minutes, with results the next day or two, for about $50, without a doctor. I use them for frequent STI testing.
It seems like it’s just tough because you generally need a fair amount of blood for each test. We could lose some of the bureaucracy but it seems hard to get away from human phlebotomists and lab techs.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541280/
While toxicity is a serious matter, the actual risk is generally overblown, since it requires truly heroic, sustained doses.
>The evidence is clear that vitamin D toxicity is one of the rarest medical conditions and is typically due to intentional or inadvertent intake of extremely high doses of vitamin D (usually in the range of 50,000-100,000 IU/d for months to years)
https://www.mayoclinicproceedings.org/article/S0025-6196(15)...
(For the record, I began taking 1-2k IU/day in March.)
This makes me wonder if there is a problem in my gut. I was on a 50k IU / week dose because of low vitamin D. It made no impact.
Being out in the sun, however, made a huge impact - so I get much more sunlight now and I'm fine. I wonder if the vitamin D issue correlates with largely indoor office work now vs farming of our ancestors and largely being outside.
Vitamin D stores in your body can take a long time to build up, but if you store too much it can be a major problem.
You should at least consider an at home vitamin D test, I found a few online(that i didn't order in the end) that were selling for around $50.
If you're determined to do this yourself you should periodically use those tests to help keep yourself safe.
Source: I'm not a doctor.
It would be better to take it at lunch: from what I have read a long time ago it might affect your sleep if you take it late.
You need to do blood tests. Don't take 10,000IU daily without consulting a doctor. The "generally considered safe" upper limit is 4000IU. You'll probably be fine with 2000IU. Too much Vitamin D can mess with your calcium and doses as low as 5000IU/daily over a few years have been reported to cause serious problems.
My interpretation is that your gut bacteria are vital for metabolizing Vitamin D and that you can take a lot of supplements but if your gut aint right it won't help.
Slightly related: I keep trying to identifty the recent report that essentially demonstrated a big calculation error in our societal wisdom regarding Vitamin D amounts - and that we need a LOT more than most people think. 2,000 - 5,000 IUD is like a fraction of it.
Edit, found it: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541280/
and I wonder how these two concepts could relate. Do you need more Vit-D or do you just need a healthier environment for it to be metabolized?I have been taking 10,000 IU every night for a week or so - going to keep cruising on it for a while to see how I feel.