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> Patients were administered oral vitamin D3 1000 IU OD I've seen multiple sources say that 1000 IU of vit D is usually insufficient to boost levels, with sugg

> Patients were administered oral vitamin D3 1000 IU OD I've seen multiple sources say that 1000 IU of vit D is usually insufficient to boost levels, with suggestions of up to 5000 a day. My mothers doctor put her up to 2000 a day because 1000 did nothing to her levels, which were already low.

carlosfvp 6y ago
How did the doctor know her vitamin levels were low? I once asked a doctor if the vitamins in our body can be measured, and he said it can't be done, is not something you can measure.
- scarlac 6y ago
  It can be measured with a blood test: > The most accurate way to measure how much vitamin D is in your body is the 25-hydroxy vitamin D blood test. https://www.webmd.com/diet/guide/vitamin-d-deficiency https://www.webmd.com/diet/guide/vitamin-d-deficiency
- ryder9 6y ago
  Blood test, had it done myself and found low levels of B12 & D, for which I took initially large doses and now take over the counter supplements
- gnulinux 6y ago
  I regularly blood-test my vitamin D and B levels since I live indoors a lot (not an outside person) and have a slight vit. B absorption problem (I don't absorb it as efficiently as normal people) so I need to take supplements even if I eat healthily.
- James_Henry 6y ago
  It depends on what vitamin or mineral you are testing.
_ink_ 6y ago
Could you link them? I got me tested. My vitamin D level is low, but my doctor told me 1.000 IU per day is too much and I should take 1.000 IU only every other day.
- PudgePacket 6y ago
  Looks like it was larger than I thought! https://pubmed.ncbi.nlm.nih.gov/30611908/ https://pubmed.ncbi.nlm.nih.gov/30611908/ > In summary, long-term supplementation with vitamin D3 in doses ranging from 5000 to 50,000 IUs/day appears to be safe. https://www.mayoclinicproceedings.org/article/S0025-6196(15)00244-X/pdf https://www.mayoclinicproceedings.org/article/S0025-6196(15)... > 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). You can find more sources by scrolling down to the "summary" section, https://www.foundmyfitness.com/episodes/jre-1474 https://www.foundmyfitness.com/episodes/jre-1474

carlosfvp 6y ago

How did the doctor know her vitamin levels were low? I once asked a doctor if the vitamins in our body can be measured, and he said it can't be done, is not something you can measure.

scarlac 6y ago
It can be measured with a blood test: > The most accurate way to measure how much vitamin D is in your body is the 25-hydroxy vitamin D blood test. https://www.webmd.com/diet/guide/vitamin-d-deficiency https://www.webmd.com/diet/guide/vitamin-d-deficiency
ryder9 6y ago
Blood test, had it done myself and found low levels of B12 & D, for which I took initially large doses and now take over the counter supplements
gnulinux 6y ago
I regularly blood-test my vitamin D and B levels since I live indoors a lot (not an outside person) and have a slight vit. B absorption problem (I don't absorb it as efficiently as normal people) so I need to take supplements even if I eat healthily.
James_Henry 6y ago
It depends on what vitamin or mineral you are testing.

_ink_ 6y ago

Could you link them? I got me tested. My vitamin D level is low, but my doctor told me 1.000 IU per day is too much and I should take 1.000 IU only every other day.

PudgePacket 6y ago
Looks like it was larger than I thought! https://pubmed.ncbi.nlm.nih.gov/30611908/ https://pubmed.ncbi.nlm.nih.gov/30611908/ > In summary, long-term supplementation with vitamin D3 in doses ranging from 5000 to 50,000 IUs/day appears to be safe. https://www.mayoclinicproceedings.org/article/S0025-6196(15)00244-X/pdf https://www.mayoclinicproceedings.org/article/S0025-6196(15)... > 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). You can find more sources by scrolling down to the "summary" section, https://www.foundmyfitness.com/episodes/jre-1474 https://www.foundmyfitness.com/episodes/jre-1474