All Supplements
Vitamin K2 (MK-7) vs Vitamin D3
Side-by-side comparison — benefits, dosage, forms, and research.
Feature
Vitamin K2 (MK-7)
Vitamin D3
Typical Dosage
100-200mcg MK-7 daily
1,000-4,000 IU daily
Best Form
MK-7 (Menaquinone-7)
Cholecalciferol (D3)
Key Benefits
5
5
Evidence Rating
★★★★
★★★★★
Best Time
With a fat-containing meal, ideally with Vitamin D3
With a fat-containing meal for best absorption
Vitamin K2 (MK-7) Benefits
✓Bone mineralisation
✓Cardiovascular protection (reduces arterial calcification)
✓Works synergistically with Vitamin D3
✓Dental health
✓May reduce fracture risk
Vitamin D3 Benefits
✓Bone health and calcium absorption
✓Immune system support
✓Mood regulation and mental health
✓Muscle function
✓May reduce risk of respiratory infections
Can You Take Both Together?
In most cases, Vitamin K2 (MK-7) and Vitamin D3 can be taken together safely. However, always check the interactions section of each supplement and consult a healthcare professional if you take medication.
Which Should You Choose?
Choose Vitamin K2 (MK-7) if your primary goal is: bone mineralisation. Choose Vitamin D3 if your primary goal is: bone health and calcium absorption. Many people take both as they target different aspects of health.
Disclaimer: This comparison is for educational purposes only. Always consult a healthcare professional before starting any supplement.