Quality
Assessing D3+K2 Potency
Published on November 18, 2025
Vitamin D3 and vitamin K2 are often paired for their complementary roles in supporting bone, cardiovascular, and immune health. This overview is part of Fullscript’s ongoing commitment to quality assurance and transparency in supplementation.
Vitamin D3 and K2 work synergistically to support calcium metabolism, bone health, and vascular integrity. Yet, inconsistencies in formulation and bioavailability can alter the intended nutrient balance. (Starek 2023) This is especially important in patients with cardiovascular concerns or those taking anticoagulants.
Because supplement quality can vary, The Fullscript Medical Team tested several D3+K2 products to confirm whether they meet label claims for potency.
The report highlights:
- Clinical applications of D3 and K2 supplements
- Quality concerns with D3 and K2 products
- Featured Fullscript-tested D3 and K2 products that meet Fullscript’s potency standards
Download the complete D3+K2 testing report to explore detailed findings and featured products
Disclaimer
The information in this article is intended for healthcare practitioners for educational purposes only, and is not a substitute for informed medical, legal, or financial advice. Practitioners should rely on their own professional training and judgement, and consult appropriate legal, financial, or clinical experts when necessary.
SHARE THIS POST
Make healthcare whole with FullscriptJoin 100,000+ providers building the future of whole person care today.
Create free account