5 ms·

50k IUs per day. That seems like a lot. I have been taking 5k twice a day with zinc and quercetin since my last bout of illness. Maybe I should consider more.

myself248 4y ago
Huh. I'm on 50k once a week and was under the impression that that was a lot.
- Auracle 4y ago
  My prescription is 50k 3x a week.
bioemerl 4y ago
Get blood tests and use those to determine how much you take, don't guesstimate or take large amounts like that without doing so, because you can overdose on it and it can do damage as a result.
colechristensen 4y ago
I was taking 5k once a day but not even every day and tested almost above the high limit. 10k a day is a lot, one would be strongly advised to regularly check blood levels if you want to keep that up.
layer8 4y ago
I maintain stable levels long term with 5K every other day, which roughly matches most dosage recommendations for people without acute deficiency. But as a sibling comment says, you should check your levels and adjust accordingly. 10K per day is already a lot if you don’t have an acute high deficiency.
ilaksh 4y ago
That was probably the cumulative. But they were also monitoring the blood levels. Absolutely should not do anything like 50k per day. I found that 5k could help but if I did that every day it felt like maybe too much.
- Maursault 4y ago
  > Absolutely should not do anything like 50k per day. I had never heard of IU. It's a very weird unit that is different for different substances.[1] One IU of Vitamin D is 0.025µg, so 50K IU of Vitamin D is 0.00125g. Someone could probably get 50K IU of Vitamin D stuck in their eye by accident and not even realize it. [1] https://en.wikipedia.org/wiki/International_unit https://en.wikipedia.org/wiki/International_unit
stjohnswarts 4y ago
yeah that's a crazy amount. the absolute max I've seen for "long term" varies from 1000 to 10000. I take 2000 (d3 in oil) myself as I don't get a lot of sun. That's as a result of having "pretty low" vit D after not having had a physical/labs for several years. Over that time I went from being outdoors a lot to being indoors and programming a lot :) . My numbers were up in the normal range (middling value) after doing that for a couple of months and going back for new blood work. I refused the 50k or so superdose they want to give me for a few goes if I recall correctly. Didn't seem like a good idea to me, and I wasn't feeling "bad" per se. I honestly didn't notice any difference other than my blood work came back normal. I continue to take 2k per day and my GP has no issue with that
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snapplebobapple 4y ago
you should test your serum levels and go from there. 50k IUs a day is a lot if your blood level of d3 is already 50 nmol/l or higher, it's probably the right dose if your level is 19 nmol/l and you are being supervised by a doctor to recheck on regular intervals to back the dosage off once you get the serum level close to where you want it to be. Me personally any more than 5000 IUs a day I would be checking my levels at least once a year just to make sure I'm not slowly poisoning myself (I'm an obese guy who has tested low before that lives in the northern hemisphere and likes to use computers all day and not go outside much. If I was smaller/lived closer to equator/spent more time outside I would want to test at least yearly over 4000 IUs a day, but this is just my personal opinion none of this is medical advice).

myself248 4y ago

Huh. I'm on 50k once a week and was under the impression that that was a lot.

Auracle 4y ago
My prescription is 50k 3x a week.

bioemerl 4y ago

Get blood tests and use those to determine how much you take, don't guesstimate or take large amounts like that without doing so, because you can overdose on it and it can do damage as a result.

colechristensen 4y ago

I was taking 5k once a day but not even every day and tested almost above the high limit. 10k a day is a lot, one would be strongly advised to regularly check blood levels if you want to keep that up.

layer8 4y ago

I maintain stable levels long term with 5K every other day, which roughly matches most dosage recommendations for people without acute deficiency. But as a sibling comment says, you should check your levels and adjust accordingly. 10K per day is already a lot if you don’t have an acute high deficiency.

ilaksh 4y ago

That was probably the cumulative. But they were also monitoring the blood levels. Absolutely should not do anything like 50k per day. I found that 5k could help but if I did that every day it felt like maybe too much.

Maursault 4y ago
> Absolutely should not do anything like 50k per day. I had never heard of IU. It's a very weird unit that is different for different substances.[1] One IU of Vitamin D is 0.025µg, so 50K IU of Vitamin D is 0.00125g. Someone could probably get 50K IU of Vitamin D stuck in their eye by accident and not even realize it. [1] https://en.wikipedia.org/wiki/International_unit https://en.wikipedia.org/wiki/International_unit

stjohnswarts 4y ago

yeah that's a crazy amount. the absolute max I've seen for "long term" varies from 1000 to 10000. I take 2000 (d3 in oil) myself as I don't get a lot of sun. That's as a result of having "pretty low" vit D after not having had a physical/labs for several years. Over that time I went from being outdoors a lot to being indoors and programming a lot :) . My numbers were up in the normal range (middling value) after doing that for a couple of months and going back for new blood work. I refused the 50k or so superdose they want to give me for a few goes if I recall correctly. Didn't seem like a good idea to me, and I wasn't feeling "bad" per se. I honestly didn't notice any difference other than my blood work came back normal. I continue to take 2k per day and my GP has no issue with that

deleted 4y ago

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snapplebobapple 4y ago

you should test your serum levels and go from there. 50k IUs a day is a lot if your blood level of d3 is already 50 nmol/l or higher, it's probably the right dose if your level is 19 nmol/l and you are being supervised by a doctor to recheck on regular intervals to back the dosage off once you get the serum level close to where you want it to be. Me personally any more than 5000 IUs a day I would be checking my levels at least once a year just to make sure I'm not slowly poisoning myself (I'm an obese guy who has tested low before that lives in the northern hemisphere and likes to use computers all day and not go outside much. If I was smaller/lived closer to equator/spent more time outside I would want to test at least yearly over 4000 IUs a day, but this is just my personal opinion none of this is medical advice).