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Cooper Complete Vitamin D3 25 mg or 1,000 IU Supplement Bottle
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Cooper Complete Vitamin D3 25 mg or 1,000 IU Supplement Bottle

Vitamin D3 – 25 mcg (1,000 IU)

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D3 form of Vitamin D Supplement for Better Absorption

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What It Is

Cooper Complete® Vitamin D supplements for individuals who need more than the 2,000 IU Vitamin D (50 mcg) contained in all adult multivitamins.

How to Use:

As a dietary supplement, take one (1) softgel daily or as directed by your health care professional. 1,000 IU (25 mcg) per Vitamin D3 softgel. Each bottle contains 60 servings.

How It Helps

Cooper Complete® Vitamin D3 softgels – 1,000 IU (25 mcg) contains vitamin D3 as cholecalciferol, which is better absorbed than vitamin D2.

Each bottle of vitamin D3 1,000 IU (25 mcg) contains 60 softgels. Daily recommended serving is one vitamin D3 softgel or as recommended by your physician.

This supplement is an option for individuals who have been advised by their physician that they need additional vitamin D supplementation.

Cooper Complete products are verified and lot tested. If you would like a copy of a Certificate of Authenticity for a specific product or would like to learn more about our testing process and results, please contact us at or call our team directly at 888.393.2221 9 a.m. until 5 p.m. Monday-Friday central time (CST).


Vitamin D3 – 25 mcg (1,000 IU)
Supplement Facts

Serving Size: 1 softgel
Servings Per Container: 60
Ingredients Daily
% Daily
Vitamin D-3 (as cholecalciferol) 25 mcg (1,000 IU) 125%

*Percent Daily Value for Adults and Children 4 or more years of age.

Other ingredients: Olive oil, gelatin, glycerin, and purified water.

Cooper Complete Gluten Free iconCooper Complete Non GMO Icon

Gluten-free, Non-GMO.

While we strive to ensure the label information on this site represents the label on the product available for purchase, products are updated from time to time. Please consult the label on the product you purchase for the most accurate ingredient and allergen information.

SKU: 816899000195
Item#: 157
Formula#: 80005529 V0121

Frequently Asked Questions

Should I take Vitamin D3 softgels with or without food?

Vitamin D3 softgels should be taken with food. A study published in the Journal of the Academy of Nutrition and Dietetics, Feb., 2015 found that vitamin D3 absorption increased by 32 percent when taken with a meal with 30 percent of the calories as fat.

Why is my Vitamin D level low?

There are two primary reasons why most of us lack vitamin D, according to the authors of the Archives of Internal Medicine article. The most significant factor is increased use of sunscreen. Sunscreen with a sun protection factor (SPF) of 15 decreases the synthesis of vitamin D by 99 percent. In addition, decreased outdoor activity and obesity have been associated with vitamin D insufficiency.

How do I know if I need to take supplemental vitamin D?

The only way to know your vitamin D level is to have a blood test known as 25 hydroxyvitamin D. “Insufficiency” is generally defined by a level less than 30 ng/ml. Vitamin D “deficiency” is a level less than 20 ng/ml. “Toxicity” does not begin until your vitamin D level hits at least 150 ng/ml. Of interest, most lifeguards and people that live near the equator (where UVB light is most prevalent) have vitamin D levels around 100 ng/ml.

What causes Vitamin D deficiency?

Vitamin D levels in humans vary dramatically by season, latitude and race. Avoidance of UV exposure has led to an epidemic of low vitamin D levels. Vitamin D can be obtained through the diet, but there are very few food sources (fatty fish, cod liver oil, fortified milk and fortified cereals).

In the summer, most people will have higher levels due to intentional or unintentional sun exposure. People living in the northeastern United States are at higher risk for vitamin D deficiency due to lack of sunshine for much of the year. Darker skinned individuals are at higher risk for deficiency due to higher melanin levels in the skin that block UV absorption.

What Vitamin D level do I need to have?

The recommended target level for vitamin D is open to debate. Most experts agree your vitamin D level should be least 30 ng/ml. However, doctors at the Cooper Clinic in Dallas, Texas recommend patients target at least 40 ng/ml as a baseline. For optimal brain health, a level of 50 ng/ml is considered optimal.

How much Vitamin D do I need to take?

How much is needed varies greatly based on age, skin tone, time of year, sun exposure, where you live, weight, and other factors. Cooper Clinic suggests consulting with your physician on what your specific intake should be based on your vitamin D test results, age, and health issues.

Can Vitamin D help reduce pain cased by osteoarthritis?

A study published in The Clinical Journal of Pain found that obese individuals with knee osteoarthritis who had higher levels of vitamin D experienced less knee pain than those with deficient or insufficient levels of vitamin D. In the study of 256 middle-age and older adults with osteoarthritis, the participants provided a self-report of knee pain and completed functional performance tasks that included balancing, walking and rising from a sitting position to a standing position. The participants with healthy vitamin D levels had less knee osteoarthritis pain, and could also walk, balance and rise from sitting to standing better than obese participants with insufficient levels of vitamin D.

Has this product changed? It no longer says it is D3.

No.Our new labels feature a cleaner look so we removed the 3 from the label. The ingredient panel lists it as cholecalciferol, which is D3. D3 has been shown to be more efficient at raising 25-hydroxyvitaminD serum levels, which is the best measure of vitamin D status

Should I take this product if I am also taking Coumadin or Warfarin?

If you are taking Coumadin or Warfarin, we recommend consulting your doctor before adding any supplements to your diet.

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Reviews of Vitamin D3 – 25 mcg (1,000 IU)

  1. I’ve been taking a broad spectrum of Cooper Complete vitamins for 15 years since I first became a patient of Dr. Cooper and It was one of the BEST decision ever made. THEY WORK

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