Softgel is very easy to swallow, small in size. I like the fact that they have used extra virgin olive oil. 2,000 IU = 50 µg vitamin D3, the best form of vitamin D. You should meaure your vitamin D level sometimes to see that you are getting enough this very important sun vitamin. I have measured my blood serum 25-Hydroxyvitamin D, 25(OH)D three times and last time my test result was 141 nmol/L = 56.4 ng/ml. My test result was now at optimum level which is 125 - 150 nmol/L = 50 - 60 ng/ml when you are taking enough Vitamin D. I will continue with the same dosage that is 2,000- 5,000 IU daily to keep my vitamin D level right. There is no need to worry about overdosing because the tendency for serum 25(OH)D to rise when the starting level already is higher is very gradual. I hope you find this review helpful. Please, also visit my page for more reviews, especially for new customers to iHerb. Enjoy your iHerb journey!
To make the long story short, I am heavily Vitamin D3 deficient, with my blood levels dropping to 8-10 mg/nl without taking supplements. I should add that when my blood levels drop below 25 mg/nl, physical symptoms manifest (plaque psoriasis, lack of focus, insomnia, etc.). With a 5.000 IU supplement, they should theoretically be above 40 mg/nl, and above 50 mg/nl with a 7.000 IU supplementation. As such, I am usually taking 6.000 - 7.000 IU, so I bought one pack of Doctor's Best 5.000 IU and one pack of 2.000 IU. My last blood test in August showed Vitamin D3 blood levels around 44 mg/nl. I switched from another brand to Doctor's Best in the second half October, taking one 5.000 IU and one 2.000 IU softgel. By mid November, physical symptoms like those mentioned above had already started manifesting (plaque psoriasis). I took an extra blood test and my Vitamin D3 blood levels had already dropped to 24 mg/nl. Given the very short time and the "inertia" that the fat-soluble Vitamin D3 has, one can simply conclude that the 7.000 IU that I have been supposedly taking were not being getting absorbed at all. It was as if I was taking nothing at all. I switched to yet another product and, with a 10.000 IU daily dose, my blood levels have again risen above 30 mg/nl three weeks later. Therefore, I strongly advise you taking something else.
Posted by iHerb Customer on Mar 15, 2012 | Verified Purchase
Can't say that much about it..
Posted by iHerb Customer on Mar 12, 2012 | Verified Purchase
We all need lots of D3, especially in the north in the Winter. I have been taking 8000 units a day for years. My vit D blood test comes back near the upper limit, which is perfect. I never get colds or the flu, and I don't get the flu shot. It really messes up your immune system. Since dogs don't make vit D either, I give my 80 lb dogs 4000 units a day.
Posted by iHerb Customer on Feb 04, 2012 | Verified Purchase
I have not felt better since I started taking 6000 IU of vitamin D3 daily. It has worked wonders in my life.
Posted by iHerb Customer on Jan 08, 2012 | Verified Purchase
I have used this for the last 6 months and love it!
Posted by iHerb Customer on Jan 05, 2012 | Verified Purchase
I have been taking D3 daily for years now and would not be without it.
Posted by Galina on Nov 18, 2011 | Verified Purchase
Already started to take it a couple of days ago, what I feel is I feel a little bit more optimistic these days.
Posted by iHerb Customer on Sep 20, 2011 | Verified Purchase
... and fast delivery. Thanks.
Posted by iHerb Customer on Sep 04, 2011 | Verified Purchase
another excellent product of Doctor's best
Posted by iHerb Customer on Mar 25, 2011 | Verified Purchase
Reasonably priced and easy to swallow.
Posted by iHerb Customer on Mar 17, 2011 | Verified Purchase
Tiny capsules - very easy to swallow