Choosing the right vitamin K supplement can feel overwhelming: do you opt for K1, K2, or a blend? Our team of nutrition experts conducted extensive research, hands-on testing, and surveyed consumer feedback to identify the top formulations for bone, heart, and overall health. Here are our findings.
Our Methodology
We evaluated each product based on:
- Ingredient Quality: Purity, source, and bioavailability of K1 and K2 forms.
- Formulation: Dosage per serving, blend ratios, and delivery method (capsule, softgel, liquid).
- Manufacturing Standards: GMP compliance, third-party testing, and facility certifications.
- Value: Cost per serving and total supply period.
- Consumer Feedback & Expert Input: Real-world user reviews and professional recommendations.
K2 MK-4 Capsules
A cost-effective vitamin K2 MK-4 supplement delivering 100 mcg per quick-release capsule. Non-GMO, gluten-free, and free of artificial additives, offering 240 servings for under $10. Ideal for budget-conscious users seeking a reliable daily K2 boost without compromise on quality or safety.
- Quick-release 100 mcg MK-4 per capsule
- 240 servings for long-term use
- Free from gluten, wheat, lactose, and artificial additives
- Lab-tested for purity and potency
Dual K2 Complex
Combining MK-4 (500 mcg) and MK-7 (100 mcg) in each softgel, this formula supports bone and heart health with enhanced bioavailability via extra virgin olive oil. Vegan, gluten-free, and non-GMO, it offers a 90-count supply for balanced performance at a reasonable price.
- MK-4 and MK-7 subtypes in every dose
- Fat-soluble delivery with extra virgin olive oil
- Vegan, gluten-free, non-GMO formula
- 90 softgels provide a 3-month supply
Life Extension Super K
This comprehensive formula provides vitamin K1 plus two bioavailable K2 forms (MK-4 and MK-7) to promote cardiovascular and bone health. Non-GMO, gluten-free, with 90 daily softgels, it ensures consistent support backed by scientific research for optimal calcium balance.
- Includes K1 plus MK-4 and MK-7 for full-spectrum support
- Supports arterial health and calcium utilization
- Gluten-free, non-GMO, made in the USA
- 1-softgel daily for a 3-month supply
Biotics Bio K Mulsion
A premium liquid vitamin K1 supplement delivering 500 mcg per drop, designed for strong bones, heart health, and optimal blood clotting support. Gluten-free and made in a GMP-certified facility, its easy-to-titrate dropper format offers precision dosing for personalized nutrition.
- 500 mcg of phytonadione (K1) per drop
- Liquid format for flexible dosing
- Supports bone density, heart health, and clotting
- Manufactured in a GMP-certified, ISO-certified facility
Key Takeaways
- Budget: K2 MK-4 Capsules deliver 100 mcg MK-4 for under $10.
- Value: Dual K2 Complex blends MK-4 and MK-7 with olive oil for enhanced absorption.
- Best Overall: Life Extension Super K covers K1 and K2 in a research-backed formula.
- Premium: Biotics Bio K Mulsion offers concentrated liquid K1 with precise dosing.
Selecting the right vitamin K supplement depends on your priorities—cost, form factor, and targeted benefits. For those on a tight budget, K2 MK-4 Capsules provide reliable support at a low price. If you want broad-spectrum efficacy with proven research, Life Extension Super K is our top recommendation. For tailored dosing and pure K1, Biotics Bio K Mulsion stands out. All selections are backed by rigorous testing, high-quality manufacturing, and positive consumer feedback, ensuring you get the supplement that best fits your health goals.