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by pkaye 2141 days ago
You can get larger doses of vitamin D in one pill as a prescription. Like 20000 IU once every week or two instead of daily.

Also there is vitamin D2 and D3. The normal stuff you take is called D2. The D3 is made by the kidneys from converting D2. But those with certain diseases, the kidneys don't do the conversion so they provide vitamin D3 in the form called calcitriol. Its something I need to take due to my kidney failure.
1 comments
nicoburns 2141 days ago
At least in the UK, it's pretty easy to get D3 over the counter too. I've been buying D3 drops off of Amazon.
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pkaye 2141 days ago
Looks like I misunderstood it. Calcitriol is different from D3. Normally your body converts D3 to calcitriol but those with certain diseases will not get it converted.

Calcitriol is actually the most confusing of my medications to manage since the dosage needs to be adjusted based on monthly blood tests. Things like amount of sun exposure can swing my numbers around. And it interacts with so many blood test numbers like PTH, phosphorus and calcium levels.

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