Strong D3 with MK-7 to handle calcium better
Metabolic Nutrition Vitamin D3 + K2 keeps it simple with just two ingredients: a strong hit of vitamin D3 to keep your levels up, and vitamin K2 as menaquinone-7 to help steer calcium to the right spots. This isn't some fancy all-in-one wellness mix. It's a straight-up daily essential for bone strength, immune health, and smart calcium use in a clear-label capsule.
You get 175 mcg of vitamin D3, that's 7,000 IU as cholecalciferol. Cholecalciferol is the top choice for supplements because it's what your body makes from sunlight and does a better job than D2 at boosting and holding onto those key vitamin D levels in your blood. Vitamin D works like a hormone, hooking up with receptors in your body to help with calcium and phosphorus uptake, immune signals, muscle and bone work, and even gene activity. At 7,000 IU, this is a solid daily amount compared to the weak doses in multis or basic supps. It's spot-on for folks with little sun, bigger builds, darker skin, winter vibes, or known low D levels—way better than those skimpy 1,000-2,000 IU add-ons. You won't feel a rush right away, but stick with it and you'll notice better recovery, stronger bones, and a more solid base for training and daily life.
Vitamin K2 comes in at 200 mcg as menaquinone-7, the longer-lasting form that's great for everyday use. K2 flips the switch on proteins like osteocalcin and matrix Gla protein. Basically, it helps your body use calcium smartly: pushing it to bones where it's needed instead of letting it wander. That's supporting incorp
Metabolic D3 + K2 by Metabolic Nutrition contains 175mcg Vitamin D3, a effective dose for health and performance.
Key Highlights
- 175 mcg Vitamin D3 per cap—that's 7,000 IU of cholecalciferol, a real step up from the tiny doses in most multis. Perfect for low-sun days, winter training, or anyone wanting a solid standalone D3 instead of something weak.
- 200 mcg Vitamin K2 as MK-7—a good dose of the long-lasting K2 form you see in top combos. MK-7 helps kickstart proteins that manage calcium, making it a smart match for high D3.
- D3 + K2 team up for real reasons, not just hype. D3 ramps up calcium absorption, K2 guides where it goes—way better than D3 flying solo.
- Cholecalciferol is the go-to for D supplements. It beats ergocalciferol at lifting and keeping vitamin D levels, which is key if you want results over just a pretty label.
- MK-7 hangs around longer than other K forms. That extended action fits once-a-day dosing and is why it's the pick for daily wellness.
- Fully open formula with just two actives. No secret blends, no mystery amounts, no extra junk trying to make it look fancy when it's meant to be straightforward.
- Built for the long haul, not quick hits. It backs your bones, immune system, and calcium game over time, not chasing some instant buzz.
- One-cap setup makes it easy to stick with. Way simpler than messing with powders, and staying consistent is huge for stuff like D3 and K2 that build up support gradually.
Metabolic D3 + K2 by Metabolic Nutrition contains 175mcg Vitamin D3, a effective dose for health and performance.
Who Is This For?
- Desk jockeys who train hard but miss out on sun. 7,000 IU D3 beats multi doses, and 200 mcg MK-7 makes it a better calcium handler than D3 alone.
- Weightlifters chasing long-term strength, not just gym highs. D helps muscles and bones, K2 directs calcium to keep things solid without D3 going rogue.
- Over-40 crowd wanting smarter bone support than calcium solo. D3-K2 handles absorption and use together for a solid plan.
- Folks in cold spots or winter grinders with low UV. High-dose cholecalciferol plus MK-7 for real daily wellness.
- Health fans after a simple, clear cap over loaded mixes. Just D3 and K2 at good doses—easy to get, stack, and check against info.
- Athletes with workout supps locked in, now fixing basics. Fits with creatine, protein, electrolytes without overlap.
How to Use
Take 1 capsule daily with a meal that has fat—like eggs, yogurt, salmon, olive oil, or nuts. It helps because D3 and K2 are fat-soluble and soak up better with food over empty stomach. Not a stim, so time it for consistency, not timing. Breakfast or lunch is popular for making it habit. Stick to one cap—it's already packing 175 mcg D3 and 200 mcg MK-7. If you have a multi, separate D3, or calcium supp, check your overall intake to avoid overdoing it. Pairs great with mag, omegas, and basics, but don't mix blindly with other strong D formulas. Keep it cool and dry, lid tight. For ongoing high-dose, bloodwork's a smart call.
What to Expect
Days 1-3: probably no big feel, since it's not a stim and doesn't hit fast. Week 1: the win is nailing the routine with one easy cap delivering 7,000 IU D3 and 200 mcg MK-7. Weeks 2-4: starts clicking as base support, especially if you were low or inconsistent before. Over time, it's about steady D intake, smarter calcium handling, and solid bone and immune backing. The vibe is low-key but real: closing a gap with a better combo than D3 solo. If you're bloodwork-savvy, this is for ongoing routines, not quick tests.
Key Ingredients
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Vitamin D3 — 175 mcg (7,000 IU) — High-potency D3 for meaningful daily vitamin D support
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Vitamin K2 — 200 mcg — MK-7 helps direct calcium where it belongs
Metabolic D3 + K2 by Metabolic Nutrition contains 175mcg Vitamin D3, a effective dose for health and performance.
Frequently Asked Questions
How much vitamin D3 is in each capsule of Metabolic Nutrition Vitamin D3 + K2?
Each capsule provides 175 mcg of vitamin D3 as cholecalciferol, which equals 7,000 IU. That is a high-potency dose compared with standard multivitamins and many basic wellness formulas.
What form of vitamin K2 is used in this formula?
This product uses vitamin K2 as menaquinone-7, commonly called MK-7. MK-7 is the preferred form in many premium formulas because it has a longer half-life and works well in once-daily dosing.
Why combine vitamin D3 with K2 instead of taking vitamin D3 alone?
Vitamin D3 increases calcium absorption, but vitamin K2 helps activate proteins involved in calcium utilization and placement. In practical terms, D3 raises the supply and K2 helps direct how that calcium is handled, which makes the formula more complete than D3 alone.
Is 7,000 IU of vitamin D3 a strong dose?
Yes. At 175 mcg or 7,000 IU, this is a substantial standalone D3 dose rather than a low-maintenance add-on. It can make sense for some users, especially with low sunlight exposure, but it also means you should account for other sources of vitamin D in your stack.
Should I take this product with food?
Yes, that is the preferred way to use it. Vitamin D3 and vitamin K2 are fat-soluble, so taking the capsule with a meal containing some fat can improve absorption and make daily use more effective.
Can I stack this with a multivitamin?
Usually yes, but you should check the multivitamin label first. Since this product already provides 7,000 IU of vitamin D3, you want to avoid unintentionally pushing your total daily D3 intake higher than planned.
How long does it take to notice anything from D3 + K2?
This is not the kind of supplement you feel acutely like caffeine or citrulline. Its benefits are cumulative and foundational, so the real value comes from consistent daily use over weeks rather than from a day-one sensation.
Is this product beginner-friendly?
The formula itself is beginner-friendly because it is simple and fully transparent. The only reason to use a little more thought is the potency of the vitamin D3 dose, which is higher than entry-level wellness products.
Who should avoid this formula?
Anyone using blood thinners such as warfarin should speak with a healthcare professional first because vitamin K2 can affect clotting-related pathways. People with calcium metabolism disorders, kidney issues, or those already using high-dose D3 should also use caution.
Does this formula contain proprietary blends?
No. Metabolic Nutrition lists both active ingredients and their exact doses clearly: 175 mcg vitamin D3 and 200 mcg vitamin K2. That full transparency is a real advantage in a category where many labels provide less useful detail.
