Natural Factors
Vitamin D3 & K2
81/100
SUPPIE SCORE
88/100
EFFICACY
High
SAFETY
70/100
CLEANLINESS
What Does Vitamin D3 & K2 Do?
Excellent bone/vascular support from bioavailable D3 1000IU + K2 MK-7 120mcg; optimal doses backed by RCTs; negligible safety risks for most adults.
Is 1000 IU Vitamin D3 enough for deficiency?
Does K2 prevent calcium buildup in arteries?
Safe to take with blood thinners?
Good for bone health in elderly?
Combine with calcium supplements?
Daily use or seasonal dosing?
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What Are the Benefits of Vitamin D3 & K2?
Based on proven scientific research
Bone HealthVery strong
Vascular HealthStrong
Immune SupportStrong
Calcium MetabolismVery strong
Good For:
What Are the Side Effects of Natural Factors Vitamin D3 & K2?
Always consult your health practitioner if in doubt.
RiskLow Risk
Overview
•Minimal side effects at listed doses; rare hypercalcemia with D3 overdose.
•K2 may interact with warfarin; monitor INR closely.
•Safe for pregnancy at 1000 IU D3; consult doctor for K2.
•No major allergens: gelatin-derived, nut/soy/dairy/gluten-free.
•Doses well below toxicity thresholds (D3 UL 4000 IU).
•High bioavailability forms reduce overdose risk.
Potential Side Effects
Negative Interactions
Inactive Ingredients
Low Risk
Low Risk
Low Risk
Low Risk
Good
Low Risk
Good
What Are the Ingredients in Natural Factors Vitamin D3 & K2?
Vitamin D3 (cholecalciferol)
25 mcg (1000 IU)
Vitamin K2 (MK-7, natto bean)
120 mcg
gelatin
glycerin
purified water
caramel color
medium chain triglycerides
yellow beeswax
sunflower lecithin
Frequently Asked Questions
Common questions about Natural Factors Vitamin D3 & K2