When you buy vitamin D supplements watch out for cheap brands that use D2 instead of cholecalciferol aka D3. I've done my research and D2 is poorly absorbed so much more (I've read up to 4 times as much) is needed for the same effect and taking that much could lead to Vitamin D toxicity. Stick with good ol' safe D3 and even better get some sun on your skin as much as possible and save the supplement for winter or days when you just can't get outside. Please click 'yes' if you found this helpful and click my NaturalMum link above for more reviews on natural beauty products, vitamins and supplements.
Posted by danarm on Apr 27, 2012 | Verified Purchase
This is effective, but taking 5000 IU of D3 every day will make you very sleepy and is probably excessive. Should also contain vitamin K2 - vitamin D3 should always be taken with K2. It helped my knees immensely by increasing calcium uptake in bones (however, if you don't take it with K2, the calcium will also harden artery walls). Instead of this I recommend finding a product which contains only 1000 IU or less, and which also contains K2 (and also pay attention to the form of K2).
Posted by iHerb Customer on Dec 04, 2010 | Verified Purchase
My husband was taking this daily... for months... just had a blood test... the doctor told us he has LOW vitamin D levels. We are switching brands in a hurry.
Posted by iHerb Customer on Nov 24, 2013 | Verified Purchase
After using this product for 2 months, my blood level for Vitamin D has not changed. Was hoping this product would have helped. It did not.
Posted by iHerb Customer on Jan 24, 2014 | Verified Purchase
have been taking this for a year and my vit. D levels are still insufficient!
Posted by iHerb Customer on Nov 02, 2009 | Verified Purchase
Following the advice of some doctors who write on the internet our family took doses of D3 in doses of 5,000 over a period of 2 weeks when under threat of flu and increasing to 50,000 when we were exposed to it in our vicinity. I did not catch the flu, but did have overdose symptoms of a strange variety including dry mouth, frequent urination, feeling spacey, strange visual perception, upper right gastric discomfort - and more. My 19 year old son actually began to get the flu when i recommended he take large dose to stop it in its tracks. He has been unwell for 12 days now ! Never really got the flu or fever but feels spacey and very tired. My husband remains unscathed ! Beware there are people sensitive to D. They should take it max every 2 weeks in c 2,000iu dose and then they will notice if they are sensitive and can cut down. One good thing - muscle aches disappeared ! But at a price.
Posted by iHerb Customer on Jan 06, 2017 | Verified Purchase
I did not the product yet :(
Posted by iHerb Customer on Sep 27, 2012 | Verified Purchase
This company was very fast on delivery and very happy with price. Thank you
Posted by iHerb Customer on Aug 08, 2017 | Verified Purchase
I am yet to receive my order from a month ago.
Posted by iHerb Customer on May 15, 2017 | Verified Purchase
No he recibido el producto comprado y no lo puedo evaluar
Posted by iHerb Customer on Dec 30, 2016 | Verified Purchase
O produto nao foi recebido e a mais de30 dias o codigo de rastreio nao funciona. Prejuizo ao comprar deste site cuidado
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