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You train with intention. You live with discipline. You expect your body to show up every day — stronger, faster, more capable than yesterday. But even the most dialed-in diet can leave gaps. Vitamin D levels run low in most adults. And without Vitamin K2, the calcium you absorb doesn't always end up where it belongs. So we built a solution that works as hard as you do. This high-potency formula combines:
- 5,000 IU of Vitamin D3 (Cholecalciferol) — supporting calcium absorption, immune readiness, hormone balance, and muscle function.
- 200 mcg of Vitamin K2 (as MK-7) — a clinically relevant dose that activates proteins responsible for directing calcium into bone and away from arteries.
This is the synergistic system that fortifies your structure, protects your cardiovascular pathways, and strengthens your immune resilience.
What sets this formula apart:
> Clinically relevant K2 dose (200 mcg) — double what most competitors offer
> High-potency D3 (5,000 IU) for optimal blood levels
> MK-7 form of K2 — the most bioactive and long-acting form
> Synergistic pairing for maximum calcium utilization
> Clean, disciplined formula — no unnecessary ingredients
30 capsules | 30 servings | One capsule per serving
*FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
No shortcuts. No gimmicks. Fuel that meets the highest standard.
D3 increases calcium availability. K2 ensures calcium is utilized correctly. Together: maximum bone support + cardiovascular protection. This is synergy, not just supplementation.
Vitamin D3 increases calcium absorption from the gut. Vitamin K2 activates osteocalcin — the protein that binds calcium into your skeletal matrix. Without both, calcium doesn't get where it needs to go. This formula ensures dietary calcium is absorbed (D3) and incorporated into bone (K2) for structural integrity you can count on.
Vitamin D3 increases calcium absorption from the gut. Vitamin K2 activates osteocalcin — the protein that binds calcium into your skeletal matrix. ...
K2 activates matrix Gla-protein (MGP), which inhibits calcium deposition in arteries and soft tissue. This keeps calcium out of your blood vessels and maintains vascular flexibility. Most D3 supplements ignore this — we don't. 200 mcg of MK-7 is the clinically relevant dose shown to activate these calcium-regulating proteins effectively.
K2 activates matrix Gla-protein (MGP), which inhibits calcium deposition in arteries and soft tissue. This keeps calcium out of your blood vessels ...
Vitamin D functions as a prohormone, influencing gene expression in tissues ranging from bone and muscle to the immune system and brain. It supports innate defenses and balanced immune responses, helping the body respond effectively to pathogens. It also influences hormone balance, healthy glucose metabolism, and mood-regulating pathways.
Vitamin D functions as a prohormone, influencing gene expression in tissues ranging from bone and muscle to the immune system and brain. It support...
Two key differentiators: First, we include a clinically relevant dose of K2 (200 mcg) — double what most competitors offer. Second, we use the MK-7 form of K2, which is the most bioactive and long-lasting form. Most D3 supplements either skip K2 entirely or underdose it.
D3 increases calcium absorption, but it doesn't control where that calcium goes. Without K2, calcium may deposit in arteries and soft tissue instead of bones. K2 activates the proteins that direct calcium into your skeletal system and keep it out of your blood vessels. They work as a synergistic system.
MK-7 (Menaquinone-7) is the most bioactive and long-lasting form of Vitamin K2. It has a longer half-life than MK-4 (the other common form), meaning it stays active in your body longer and provides more consistent support for calcium-regulating proteins.
5,000 IU is a high-potency dose designed to maintain optimal blood levels of Vitamin D, especially for active individuals. Many adults are deficient, and the standard 400-1,000 IU doses often aren't enough to reach optimal levels. This dose supports bone metabolism, immune defense, hormonal balance, and muscle function.
200 mcg is the clinically relevant dose shown to effectively activate calcium-regulating proteins like osteocalcin and matrix Gla-protein. Many brands underdose K2 at 100 mcg or less. We chose efficacy over cost savings.
Vitamin D functions as a prohormone that influences gene expression in immune cells. It supports innate defenses (your body's first line of response) and helps maintain balanced immune responses, helping your body respond effectively to pathogens without overreacting.
Yes. Adequate Vitamin D helps maintain muscle strength, protein synthesis, and neuromuscular coordination. Vitamin D receptors are present in muscle tissue, and deficiency is associated with muscle weakness and reduced performance.
Take one capsule daily with food. Both D3 and K2 are fat-soluble vitamins, so taking them with a meal containing fat improves absorption.
Yes. This formula provides clinically relevant doses designed for people who demand more from their body. It supports bone density, cardiovascular health, immune resilience, hormone balance, and muscle function — foundational systems for performance and recovery. Manufactured in cGMP-compliant FDA-registered facilities.
Yes. D3 and K2 are foundational nutrients that complement other supplements. They support the structural and systemic health that enables everything else you do.
Overall rating: 4.8 / 5 from 70 reviews.
The supplement features a high-quality blend of Vitamin D3 and K2, supporting calcium absorption and immune function. The formula is potent with 5,000 IU of D3 and 200 mcg of K2, ensuring optimal blood levels and bone health. The clean, disciplined formulation contains no unnecessary ingredients.
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"Have been taking them dailyI've noticed a significant boost in my overall energy and daily wellness since adding Jocko Fuel D3 + K2 to my routine. The capsules are easy to swallow with no unpleasant aftertaste, and the combination of high-potency Vitamin D3 with K2 gives me confidence that I'm effectively supporting both my immune health and bone strength. It's a top-tier, reliable daily supplement that delivers exactly what it promises."
"Essential vitamin combo every human needs. These are essential for regulating cardiovascular health keeping calcium away from the arteries and where it should be instead like bones. Don’t be fooled by other brands. Clean formula here. Get healthier! Buy this now!"
"What interested me in this is the big dose of K2 compared to the brand I was using. Jocko always has great quality ingredients. This is my new go to from here on out"
"Great to bring to work where it’s tough to get sunlight. Has more vitamin K than other brands I saw at Sprouts. Staple for shift workers"
"I really hated leaving Nature Made since a buddy worked there. But I after I found out that they use Soy Bean Oil I had to bounce. Jocko's is killing it though! And I am a fan!"
"I love that I am getting a clinical level dose of D3 I cant wait to see how my blood work looks in 3 months as thi was an are I was deficient in recently."
"A little early for a true review, but so far I like it"
"Good work on"
"Did not expect to like this stuff as much as I did. Noticed the benefits more than I expected!"
"Great value and product like every JF product I use."
