Posted by ed_uk2010 on January 25, 2015, at 13:44:42
In reply to Re: Review finds vitamin D improves depression » ed_uk2010, posted by Tomatheus on January 25, 2015, at 12:28:05
>do you have other reasons for supplementing?
I work indoors all the time so I get very little natural sunlight for most of the year.
I did try a single dose of D3 a couple of years ago. 400 000 units orally. I didn't notice anything. This dose is comparable to the range used occasionally by injection: 300 000 to 600 000 units. Injections aren't used much anymore since D3 is so active orally and there are many products now... there didn't used to be.
Anyway, I've decided it's probably better to take smaller doses regularly. One study which I saw a while ago suggested that a large 'stat' dose (like I took) was associated with more falls and fractures in the elderly. I didn't notice anything after my dose.
I think it's best to avoid more than 40 000 units per week or around 5000 units per day in the short term to treat deficiency. And I wouldn't personally take more than 1000 units/day long term without blood tests. Although massive single doses may increase the blood D3 levels rapidly I'm not sure this is such a good thing.
poster:ed_uk2010
thread:1075281
URL: http://www.dr-bob.org/babble/alter/20140619/msgs/1075548.html