Why We Formulated CorePure Vitamin D3 + K2 This Way
Choosing a Vitamin D supplement seems simple. Browse online and you will find products containing 400 IU, 600 IU, 1000 IU, 2000 IU, 5000 IU and even 10,000 IU.
Many combine Vitamin D with calcium. Others add Vitamin K2. Some focus entirely on offering the highest dose possible.
At CorePure, we did not begin with the question: How can we create the strongest-looking product?
Instead, we asked: How can we create a thoughtful Vitamin D supplement designed for long-term daily wellness?
CorePure Takeaway
D3 + K2 was formulated around daily wellness, calcium metabolism support and long-term practicality, not around the highest possible dose.
Why Vitamin D Matters
Vitamin D is one of the most important nutrients involved in maintaining normal physiological function.
Evidence Note
Vitamin D contributes to normal calcium and phosphorus absorption, bone maintenance, muscle function, immune system function and normal teeth.
Unlike many vitamins obtained primarily through food, Vitamin D can also be synthesised by the skin following exposure to sunlight.
However, modern lifestyles have changed dramatically. Many people spend much of their day working indoors, travelling in enclosed vehicles, using sunscreen and spending limited time in direct sunlight.
Why Vitamin K2 Matters
Vitamin D and Vitamin K2 perform different functions, but they are often paired because they complement one another.
Why We Chose This
Vitamin D helps regulate calcium absorption, while Vitamin K2 contributes to normal calcium metabolism. We chose to formulate them together rather than view them as separate nutrients.
This is why we believe a thoughtfully designed Vitamin D supplement should also consider Vitamin K2.
Why We Chose 2000 IU
Selecting the right Vitamin D dose was one of the most important formulation decisions we made.
We could have selected the minimum recommendation. We could also have selected one of the highest doses available. We deliberately chose neither.
Why We Chose This
We chose 2000 IU because it reflects a thoughtful balance between meaningful daily supplementation and long-term routine use.
Our objective was not to formulate around the smallest number or the biggest marketing claim. It was to formulate a premium daily wellness supplement.
Why We Did Not Choose 600 IU
The Recommended Dietary Allowance serves an important purpose. It provides a nutritional benchmark for the general population.
Common Myth
A premium supplement must be built only around the minimum daily recommendation. In reality, formulation should also consider purpose, lifestyle and intended use.
Modern lifestyles often include limited sun exposure, indoor work, urban living and reduced outdoor activity. For these reasons, our objective was not simply to formulate around the minimum daily recommendation.
Why We Did Not Choose 5000 IU
At the opposite end of the spectrum are products containing 5000 IU or more.
Common Myth
A higher Vitamin D dose is automatically better. Higher doses may be appropriate in certain situations, but they should generally be guided by a qualified healthcare professional.
CorePure Vitamin D3 + K2 was designed as a daily wellness supplement, not a high-dose therapeutic product.
Why We Chose MK-7
Not all Vitamin K2 is the same. The two forms most commonly found in supplements are MK-4 and MK-7.
Why We Chose This
We chose MK-7 because of its longer half-life and suitability for once-daily supplementation.
It aligns with our objective of creating a simple, practical formulation that integrates easily into a daily wellness routine.
Why We Did Not Add Calcium
Many Vitamin D supplements also contain calcium. This approach is not necessarily wrong.
Common Myth
Every Vitamin D supplement should include calcium. Calcium needs vary considerably based on diet, age and overall nutritional intake.
Rather than assuming every customer requires additional calcium, we chose to focus on delivering Vitamin D3 and Vitamin K2 as a dedicated formulation.
What We Chose Not to Include
Every CorePure formulation is defined not only by what it contains, but also by what it intentionally leaves out.
For Vitamin D3 + K2, we deliberately avoided excessively high marketing doses, ingredients added simply to increase label complexity, unnecessary calcium for every user and marketing-driven formulation decisions.
CorePure Takeaway
For this formula, restraint is part of the formulation philosophy. We chose purpose, simplicity and transparency.
Our Formulation Philosophy
At CorePure, we do not formulate products around trends. We formulate them around thoughtful decisions.
Every ingredient, dosage, omission and formulation choice must answer one simple question: Does this genuinely improve the product for the customer?
If the answer is yes, we include it. If the answer is no, we leave it out.
Evidence Behind This Article
The information presented in this article is based on scientific literature and guidance from recognised health organisations.
NIH Office of Dietary Supplements Vitamin D Fact Sheet, EFSA dietary reference values and Endocrine Society clinical practice guidance.
EFSA scientific opinion on Vitamin K, Beulens JWJ et al. on Vitamin K in human health, and reviews on Vitamin K2.
WHO, Harvard T.H. Chan School of Public Health, Mayo Clinic and Cleveland Clinic.
How This Influenced Our Formula
Scientific evidence does not tell us what product to build. It helps us make better formulation decisions.
Chosen as a meaningful daily wellness dose rather than the smallest or largest possible number.
Selected for once-daily practicality and its role in normal calcium metabolism.
Designed to fit easily into a consistent routine.
Built around clear ingredient choices and purpose.
We did not formulate around the biggest number possible.
Calcium needs vary, so we kept this formula focused on D3 + K2.
Every addition must improve the product, not just the label.
Frequently Asked Questions
Why 2000 IU instead of 600 IU?
600 IU is a general reference point, but CorePure D3 + K2 was designed as a meaningful daily wellness supplement for modern lifestyles with limited sun exposure.
Why not 5000 IU?
Higher doses may be useful in certain situations under professional guidance, but this product is intended for long-term daily wellness rather than therapeutic high-dose use.
Why include K2?
Vitamin D and K2 complement one another in calcium-related physiology, which is why we chose to formulate them together.
Why no calcium?
Calcium intake varies widely by diet and individual need. We chose a focused D3 + K2 formula so calcium decisions can remain personalised.
Our Promise
At CorePure, every ingredient and every omission is a deliberate decision.
We do not formulate products to win comparisons on the front of the label.
We formulate products to earn your trust through evidence, transparency and thoughtful formulation.
Disclaimer
This article is intended for educational purposes only and should not be interpreted as medical advice. Individual nutritional needs vary depending on factors such as diet, sun exposure, age and health status. Always consult a qualified healthcare professional before beginning any dietary supplement, particularly if you have an underlying medical condition, are pregnant or breastfeeding, or are taking prescription medications.