Supports healthy blood clotting and bone health.
Effective Dose
100-300 mcg
Onset
Days
Cost
Budget
Cycle
Vitamin K1 can be taken daily without cycling.
7 things you need to know
What it does
Supports healthy blood clotting and bone health.
Worth it?
7/10. Vitamin K1 is a well-established nutrient that plays a crucial role in blood clotting and bone health. Supplementation can be particularly helpful for individuals with deficiencies or those taking medications that interfere with vitamin K metabolism. While most people get enough from their diet, supplementation offers a reliable way to ensure adequate intake.
How much to take
100-300 mcg
Price
Cheap (under $15/month)
How fast it works
Builds up over days to weeks
Safety
Check if: individuals taking anticoagulant medications (e.g., warfarin)
What people say
Most people don't feel any immediate effects from Vitamin K1 supplementation, though long-term users may notice improvements in bone health over time. The effect is generally subtle unless addressing a deficiency.
Vitamin K1 is naturally found in green leafy vegetables like spinach, kale, and broccoli.
"Most people don't feel any immediate effects from Vitamin K1 supplementation, though long-term users may notice improvements in bone health over time. The effect is generally subtle unless addressing a deficiency."
Research backing for this ingredient
Some evidence, more research needed
Limited
Yes
Strong agreement among researchers
"There is strong scientific consensus on the importance of vitamin K1 for blood clotting and bone health. Studies consistently demonstrate its effectiveness, especially in addressing deficiencies."
Vitamin K1 is essential for several bodily functions, most notably blood clotting and bone metabolism. Supplementation helps ensure you're meeting your daily needs, particularly if your diet is lacking or if you have certain health conditions.
Products below minimum dose are likely ineffective
When
Any time
How
100-300 mcg
Food
Take with a meal containing fat for better absorption.
It may take several days to weeks to notice changes, particularly in blood clotting markers.
Vitamin K1 can be taken daily without cycling.
Check for specific interactions.
Vitamin K1 is categorized as a vitamin.
Scientific consensus score: 8/10.
Evidence quality: STRONG.
Add Vitamin K1 to your stack analyzer or compare it with other ingredients.
Not medical advice. Always consult a healthcare provider.