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Doctor's Best, Best Vitamin D3, 2000 IU, 180 Softgels

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In Stock
  • Expiration Date: Jul 2019
  • Shipping Weight: 0.18 lbs (0.08 kg)
  • Product Code: DRB-00210
  • UPC Code: 753950002104
  • Package Quantity: 180 Softgels
  • Dimensions: 2.1 x 2.1 x 3.9 in, 0.15 lbs (0.07 kg)
Product Overview


  • Science-Based Nutrition
  • Dietary Supplement
  • Non-GMO and Gluten Free

Vitamin D3 (cholecalciferol) is a nutrient that is critical to many bodily functions. Vitamin D3 is beneficial for supporting bone health, immune wellness, cardiovascular function, and cellular metabolism, among others. Mounting research is highlighting the ever-increasing benefits of optimal vitamin D3 status. Vitamin D3 is known to interact with over 200 different genes and thus plays a crucial regulatory role as a metabolic activator for a multitude of metabolic processes.

Suggested Use

Adult Use: Take 1 or 2 capsules daily with food, or as directed by a nutritionally informed physician.

Other Ingredients

Extra virgin olive oil, softgel capsule (gelatin, glycerin, purified water).

Contains nothing other than listed ingredients

The vitamin D3 contained in this product is derived from lanolin, a component of sheep's wool.

Supplement Facts
Serving Size: 1 softgel
Servings Per Container: 180 servings
  Amount per serving % Daily Value
Vitamin D3 2000 IU 500%
iHerb Customer Reviews


Posted by 5412817444928397196 on Jan 15, 2017


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Simply does not work

Posted by 5551257947425314143 on Dec 19, 2016

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.

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done it various time

Posted by Reviewer1788220 on Dec 04, 2016

good stuff

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Good product

Posted by 5338733469947196742 on Oct 30, 2016

Feeling much better. Aches and pains less intense.. will buy again.

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Best by Far. I have tried all of them.

Posted by 5001139545517854534 on Sep 28, 2016

Best by Far. I have tried all of them. Blood tests prove its effectiveness.

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