We often provide vitamin D3 samples to professional offices to:
  • Initiate patient care
  • Provide to patients who require increased dosing for loading
  • Provide to patients who cannot afford the product

Provider Testimonial:

"MAX D3 cured my deficiency which was so severe that I had secondary hyperparathyroidism. 

[I] was severely deficient when the endocrinologist told me to take your product. Have been perfect ever since."

Barbara Barlow MD, FACS, FAAP 
Columbia University Medical Center - Professor of Surgery in Epidemiology

To request Maximum D3 samples, please complete the form below & a local sales rep will contact you soon.**

Please only submit one form per clinic location. If requesting for multiple providers, please make note of this.

Maximum D3 Sample Request
Samples are intended to initiate patient care and not for personal use.
Clinic Mailing Address (We do not ship to PO Boxes nor personal residences)
Clinic Mailing Address (We do not ship to PO Boxes nor personal residences)
Check if you would like to receive:
How frequently do you recommend Maximum D3?

Your referrals are always appreciated & help offset the cost of samples.  We appreciate your support!

**We are only able to provide samples to the Continental US and Puerto Rico. Thank you for understanding. 


For retail product information, please contact:
Our licensed distributor, Pro Pharma LLC, will ship the product.


For cholecalciferol for clinical studies, please contact:


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The most common regimen for loading and initial follow up with Maximum D3®:
  • Serum 25(OH)D <18-20 ng/ml: 1 capsule daily for 30 days, then 2 capsules weekly
  • Serum 25(OH)D >20 ng/ml: 2 capsules weekly
  • Then reassess 25 (OH)D levels after 12 weeks.

These recommendations apply only to Maximum D3®.


The ideal range is generally between 30 and 60ng/ml of 25(OH) cholecalciferol.

It is generally recognized that the minimal blood level needed to prevent overt bone disease is 20 ng/ml.

Good evidence exists for a risk of overt bone disease (osteomalacia, Rickets) with levels below 20 ng/ml.  There is decent evidence for suboptimal calcium absorption with levels below 32 ng/ml.  Primitive sun-exposed populations have 25(OH)D levels predominantly in the 40-60 ng/ml range.

Toxicity from short-term exposure requires levels near or above 150 ng/ml.  Studies to assess the long-term safety of levels from 80 to 150 ng/ml are lacking.  The Institute of Medicine recommends against doses averaging above 4,000 IU/day in unsupervised patients.  The above recommendation is based on lack of evidence for additional benefit, limited data for adverse effect and uncertainty over toxicity from chronic use.


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The only ingredients in Maximum D3® are vitamin D3 (cholecalciferol), non-GMO soybean lecithin, FD&C Blue 1 on half of the gelatin shell, and bovine (beef) gelatin.

The pill is a small, size #2 hard gel capsuple containing 325 mcg of cholecalciferol in a digestible oil base. The capsules are manufactured, packaged and warehoused in FDA-registered and inspected facilities. Quality, packaging and stability are to available USP and FDA standards.

Contains: Soy

Allergen List
Cereals containing Gluten and products thereof NO
Crustaceans (mussels and shellfish) and products thereof NO
Eggs and products thereof NO
Fish and products thereof NO
Peanuts and products thereof NO
Soybeans and products thereof YES
(Lecithin derived from soy)
Milk and dairy products (including lactose) NO
Nuts and products thereof NO

Additional information

Composition and Origin (weights are approximate)
Lecithin derived from soy, Non-GMO (USA) 287mg (0.01 ounce)
Kosher bovine gelatin caps (France or Japan) 73 mg (0.0026 ounce)
Cholecalciferol - vitamin D3 (USA) 325 mcg (0.00001 ounce)
       FD&C Blue 1 (FDA-approved)
       There is no coloring in the oil.


The dosage and formulation have been intelligently designed:

  • The hard gel cap for stability
  • The digestible oil for consistency of potency (mixing), stability and absorption

Maximum D3® conforms to USP standards <581> for purity, <2091> for weight variation, and <2040> for disintegration and dissolution and conforms to available USP standards for ingredients.

PLEASE NOTE: Each production lot is tested prior to distribution. Ingredients are also tested prior to production and later testing is done for evidence of contamination or degradation.