Vitamin D3 50,000 - 50,000 IU, 50 softgels

SKU: PH478

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Helps combat age-related health issues, improves bone strength and density 

  • Promotes calcium absorption
  • Supports healthy immune function

Research-Supported Benefits:

Supports Healthy Aging. Aging can impact how vitamin D is metabolized in the body increasing the risk of skeletal health issues as well as other age-related health concerns such as impaired brain health, lowered immune function and heart health concerns. Research demonstrates supplementing with vitamin D may help maintain healthy vitamin D levels with age and reduce the risk of age-related health concerns.1

Supports Bone Health. Bone remodeling occurs throughout our lifetime. As we age, the rate of bone tissue generation decreases leading to skeletal weakness and frailty. Research shows that vitamin D, in combination with calcium, can increase bone tissue formation, strength and density.2, 3

Supports Immune Health. Decreased immunity is common among those over 40. Low levels of vitamin D have been associated with increased bacterial and viral infections. Maintaining appropriate vitamin D levels has been shown to improve the innate and adaptive response of the human immune system, including dental and intestinal infections.4


1. Mark KA, Dumas KJ, Bhaumik D, et al. Vitamin d promotes protein homeostasis and longevity via the stress response pathway genes skn-1, ire-1, and xbp-1. Cell Reports. 2016;17(5):1227-1237. doi:10.1016/j.celrep.2016.09.086  

2. Veldurthy V, Wei R, Oz L, Dhawan P, Jeon YH, Christakos S. Vitamin D, calcium homeostasis and aging. Bone Res. 2016;4(1):1-7. doi:10.1038/boneres.2016.41  doi:10.1038/boneres.2016.41  

3. Hill TR, Aspray TJ, Francis RM. Vitamin D and bone health outcomes in older age. Proceedings of the Nutrition Society. 2013;72(4):372-380. doi:10.1017/S0029665113002036 

4. Ismailova A, White JH. Vitamin D, infections and immunity. Rev Endocr Metab Disord. 2022;23(2):265-277. doi:10.1007/s11154-021-09679-5

  • Vitamin D, a fat-soluble vitamin, is essential to maintaining total body health, yet is not found in many foods. It's needed daily to keep bones and teeth strong over your lifetime, and to ensure the proper functioning of the heart, muscles and nerves - it even helps your blood to clot. A daily regimen of this D3 (cholecalciferol) is the best way to treat and prevent vitamin D deficiency, whether from lack of sunlight, poor nutrition, chronic illness or aging.
  • D3 50,000™ offers support for healthy bones and supports the immune system by maintaining normal blood levels of calcium and phosphorus, thus promoting calcium absorption.
Supplement Facts
Serving Size: 1 softgel
Servings Per Container: 50
Amount Per Serving %DV
Vitamin D3 (Cholecalciferol) from Lanolin
1,250 mcg (50,000 IU) 6,250%
*Percent Daily Value (DV) based on a 2,000 calorie diet
  • Suggested Use: As directed by your healthcare practitioner.
  • Storage: Close tightly after each use. Store in a cool, dry place. KEEP OUT OF REACH OF CHILDREN.
  • Contraindications: Vitamin D levels should be monitored and contained within acceptable limits: 40-60 ng/mL or 100-150 nmol/L of 25 (OH) Vitamin D. (Conversion ratio: 1ng/mL equal to 2.5nmol/L). Some recommend higher. Individuals taking this product should consult and be monitored by their physician.
  • Other Ingredients: Fractionated Coconut Oil (MCT), Gelatin.
  • Contains No: Dairy, egg, soy, gluten, wheat or artificial colors or flavors.

Better Vitamin D Source. Compared to other products that commonly use vitamin D2, we use vitamin D3 (cholecalciferol). This is the natural form and more absorbable and potent compared to D2.

Higher Dose. ProHealth’s Vitamin D3 contains 50,000 IU’s per serving, 12,500% of the daily value. The strongest single dose available on the market at a cost far less than you would pay at the pharmacy.

Meets US Pharmacopeia Standards. Our vitamin D3 meets US Pharmacopeia standards.

No Unnecessary Ingredients. Our vitamin D3 is free from yeast, wheat, gluten, sugar, eggs, peanuts, tree nuts, fish, shellfish, dye and preservatives.

Quality Manufacturing Practices. All of our products are manufactured in an FDA-registered, GMP-certified facility.

Third-Party Tested in the USA. Every batch is third-party tested in US laboratories to ensure the highest quality, purity and potency. Certificates of Analysis are available.

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Customer Reviews

Based on 45 reviews
Dan P.

I need it but didn't know. If your on prescription consult you doctor

Camden H.

I mean, its vit d and its 50k iu. You're either getting a 5 or a 1 here and since we got 2 correct out of 2 possible then looks like we're awarding 5 points. Congrats.

Irena V.

Excellent supplement

Vit D

My Vit D levels were low but after taking this for 2 months my levels were at the high range, works well. I did take with Vit K for absorption.

Cynthia C.

My script for this amount of D3 was no longer covered by my insurance. Found your site for the same amount (50,000 IU) ordered it and I am pleased.

Renee F.
Great vit d

Pro health always ships this out fast. These are great if you take a high dose of vitamin d and are small and easy to swallow. Always buy my vit d from pro health.


Vitamin D3 50,000 (50,000 IU, 50 softgels) by ProHealth

Jos V.

Verry good

Lynn A.

You offer a large amount of this product. CVS only offers 10,000

I. E.
Highest IU of D3 I could easily find in one capsule

Trying to reduce the amount of tablets I take. High IU in one dose. Very happy

Frequently asked questions

This product is not intended for daily use. Please consult your healthcare provider to determine the dosage frequency that is right for you.
Since Vitamin D3 does not interfere with circadian rhythm or have stimulant properties, it can be taken any time of day.
Vitamin D3 is a fat-soluble vitamin. For best absorption, take with a meal that contains some fat.
Keep Vitamin D3 at room temperature and out of direct sunlight.
Vitamin D3 side effects are quite rare and have only been observed in those taking excessively high doses.