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Doctor's Best

Best Vitamin D3

Best Vitamin D3

Item: DB176

  • Best Vitamin D3 from Doctor's Best

  • 5,000 IU per softgel capsule

  • Derived from lanolin

5,000 IU 360 Sgels

Retail $20.99
Save 48%
In Stock

Supplement Facts

Serving Size 1 softgel

Servings Per Container 360 servings

  Amount Per Serving %Daily Value
Vitamin D3 5,000 IU 1,250%

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

Suggested Adult Use: Take one softgel daily, with food, or as directed by a nutritionally informed physician.

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

Not Suitable for Vegetarians.


Shipping Weight

.30 lbs

  • Best Vitamin D3 from Doctor's Best

  • 5,000 IU per softgel capsule

  • Derived from lanolin

Vitamin D3 from Doctor's Best features 5,000 IU of cholecalciferol per softgel capsule. Cholecalciferol is derived from lanolin, which is a component of sheep's wool. 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. Non-GMO. Gluten free.

Terms and Ingredient Definitions


Doctor's Best Best Vitamin D3 Reviews

Summary of Customer Ratings & Reviews

Customer Ratings & Reviews

Best Vitamin D3 is rated 4.8 out of 5 by 30.
Rated 5 out of 5 by from Great product Especially good during the winter months when it's tough to get adequate sun exposure. very easy to swallow due to it's small size. 5,000IU is a good potency, I take two a day.
Date published: 2016-10-31
Rated 5 out of 5 by from
Date published: 2016-09-30
Rated 5 out of 5 by from Nice capsule size Loved that these are small enough for anyone to swallow...a plus when you take more than one at a time.
Date published: 2016-02-21
Rated 5 out of 5 by from Works Great I feel better when I take these in the winter. They seem to help when you can't get sunshine.
Date published: 2015-12-31
Rated 5 out of 5 by from no brainer My husband and I take one every a.m. I like the ingredients compared to most other products. small and easy to swallow. we all need vitamin D3 in the mornings and our magnesium in the evenings (Drs Best makes a good chelated magnesium)
Date published: 2015-04-28
Rated 1 out of 5 by from Does Not Work! After a year using this product my wife had a blood test to check her Vitamin D levels and was shocked to find they'd dropped from 48 to the low 20s. So I had my blood tested as well a couple of months later and mine had dropped from 42 to 22. Prior to this we had been using Carlson brand with good results. We will be requesting a full refund from Swanson and returning what we have left.
Date published: 2015-03-11
Rated 5 out of 5 by from just what the Dr, ordered I take this a my drs recommendation but due to the disclaimer my reviews are not wanted or acceptable.
Date published: 2014-05-11
Rated 5 out of 5 by from Fast service & Reliable product. Excellent product. Keeps me at the level I need to be.
Date published: 2014-02-20
Rated 5 out of 5 by from
Date published: 2014-02-08
Rated 5 out of 5 by from
Date published: 2014-02-01
Rated 5 out of 5 by from Finally!!! This product really works. First time for a 50 reading on my blood test. Keeping this on hand!
Date published: 2013-12-11
Rated 5 out of 5 by from My favorite I like Doctor's Best brand the best of any Vitamin D3 I've tried. Highly recommend it!
Date published: 2013-11-18
Rated 5 out of 5 by from Does the job I use a 2000 with a 5000 to help keep up my D3 levels where they belong. Works quickly to restore low levels.
Date published: 2013-11-09
Rated 5 out of 5 by from Great Value Haven't noticed a huge difference yet but will know more when next blood work is checked.
Date published: 2013-10-04
Rated 5 out of 5 by from Best Vitamin D3 All I can say is, this is the best vitamin D3 you can buy. All natural and no fillers.
Date published: 2013-09-11
Rated 5 out of 5 by from indispensible Vitamin D3 is involved with so many systems in the body. For about a year now, I have taken 4 softgels every morning. After trial and error, that is the dose that seems right for me personally, although I haven't been tested for my blood levels. D3 is the natural form so D3 does not tend to be as toxic or as easy to overdose on as the synthetic D2 form, or so I heard on the radio. I like Doctor's Best for D3 because it has olive oil in the formulation and it is a nice size with 360 softgels per bottle.
Date published: 2013-08-19
Rated 4 out of 5 by from
Date published: 2013-07-31
Rated 5 out of 5 by from Best product It's one of the best vitamin D . Recommends this product.
Date published: 2013-06-05
Rated 5 out of 5 by from My fave Viatmin D This is my favorite Vitamin D. Great value and I love that they use olive oil instead of soybean oil or some other oil.
Date published: 2013-04-15
Rated 5 out of 5 by from Vitamin D Have your doctor test your Vitamin D. They can determine how much to take. This pill is perfect for me.
Date published: 2013-03-30
Rated 5 out of 5 by from High potency I really think this product boosts my immune system. I live in the north and we don't have a lot sunshine. Good price, easy to take.
Date published: 2013-03-27
Rated 5 out of 5 by from Great value
Date published: 2013-03-17
Rated 5 out of 5 by from D3 Easy to swallow gel tabs.
Date published: 2013-03-15
Rated 5 out of 5 by from This is a good source of Vit. D3. And 5000 units are recommended for most people
Date published: 2013-03-14
Rated 5 out of 5 by from Good Deal This D3 is so easy to swallow and takes care of the extra D3 needed.
Date published: 2013-03-13
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Why Shop Swanson® Brands?

"With my personal 100% money-back satisfaction guarantee, you have nothing to lose and great savings to gain."

Lee Swanson, Founder of Swanson Health Products

Risk-Free Purchase Guarantee on Doctor's Best Best Vitamin D3

If you are dissatisfied for any reason, we'll give you a full refund and pay return shipping.

Swanson's Standards

We are dedicated to offering the highest quality products at the best price. Find out more about how we ensure such a high standard in everything we do.

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5,000 IU 360 Sgels

5,000 IU 180 Sgels

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About Swanson
© 2017 Ratings based on results of the 2017 Survey of Supplement Users. More information at
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