D3+K2-7

Why is the K2-7 only 60.6% of RDA when the D3 is 100%?

The 33.34mcg K2-7 dose is calibrated as the appropriate companion to 600 IU of D3 — based on the ratio between the two fat-soluble vitamins that supports calcium direction without exceeding need. K2-7 has a long half-life in serum (about 3 days, compared to K1's few hours), so a 60.6% RDA dose maintained daily achieves the steady-state benefits the formulation is built around. If you want a higher K2-7 dose for specific clinical reasons, the K2-7 standalone product delivers 100% RDA, or our Essential Protein and Elite Performance Protein deliver 55mcg (100% RDA) of K2-7 alongside protein.

Why does this contain MCT powder?

Both Vitamin D3 and K2-7 are fat-soluble — they absorb significantly better when consumed with dietary fat. Most D3+K2 products are dry capsules that depend on the customer remembering to take them with a fatty meal. The MCT in each capsule serves as a built-in fat carrier — supporting absorption even when breakfast is light on fat. MCT specifically is used because it's the fastest-absorbing dietary fat, with no waiting for full digestion. This is a formulation decision, not a calorie addition — the 0.86 kcal per capsule is negligible.

Why pair D3 with K2-7 specifically?

D3 increases calcium absorption from food and from the bloodstream. Without adequate Vitamin K2, the absorbed calcium can deposit in soft tissue — particularly arteries — rather than going into bone. K2-7 activates the proteins (osteocalcin and matrix-Gla protein) that direct calcium into bone and keep it out of arterial walls. The two work together — D3 brings calcium in, K2 sends it where it belongs. Taking D3 alone is not dangerous, but D3+K2 together is the more complete formulation for bone and cardiovascular health.

Is MenaquinGold® K2-7 different from synthetic K2?

Yes. MenaquinGold® is a patented vegan K2-7, produced through the fermentation of chickpeas — the natural form your body recognises. Most cheaper K2 supplements use a synthetic version that may include both cis and trans isomers, only one of which is biologically active. Naturally-fermented K2-7 is all-trans (the active form), making it more bioavailable per microgram. Worth the formulation choice for a nutrient where you want every microgram doing the work.

What's the difference between Vegan D3 and standard D3?

Most Vitamin D3 (cholecalciferol) on the market is extracted from lanolin (sheep's wool oil) — not vegan. We use a vegan Vitamin D3 as cholecalciferol sourced from pine. Molecularly identical to lanolin-derived D3, fully vegan, with the same bioavailability and clinical effect. The form on the molecule level doesn't change; the source does. Worth the choice for vegans and for anyone who prefers plant-source supplementation.

How long before I see results?

Depends on what you're measuring and where you started. If your Vitamin D status was already adequate, the 25-OH D blood test will show your level holding steady — daily maintenance is doing its job. If you were sub-adequate but not deficient, the level may rise modestly over 8–12 weeks into the comfortable range. If you were deficient at baseline, the 600 IU maintenance dose is unlikely to fully correct the deficit on its own — your physician may prescribe a higher therapeutic dose first, with this product taking over for maintenance afterwards. Felt effects (energy, mood, muscle function) vary widely and are not reliable indicators of D3 or K2 status — the blood test is. Re-test after 8–12 weeks to confirm where you are.

Can I take this alongside my multivitamin or other supplements?

Generally yes, with one consideration. If your multivitamin already contains D3 and K2-7 at 100% RDA, adding this product doubles the dose — generally still within safe limits, but worth reviewing. If you're also taking Essential Protein or Elite Performance Protein (which deliver 600 IU D3 and 55mcg K2-7), adding this standalone product results in 1200 IU D3 and ~88mcg K2-7 daily — still within typical safe daily limits, but may be more than you need. The right pattern is to pick the products that fit your stack and avoid stacking products that already deliver the same nutrients.

Can I take this if I'm on warfarin or similar blood thinners?

Inform your physician before starting daily K2 supplementation. The 33.34mcg K2-7 dose is modest, but K2 affects coagulation pathways and warfarin dosing may need review. Once you start, stay consistent — sudden changes in K2 intake are more disruptive to INR stability than steady intake. K2-7 specifically (vs K1 from leafy greens) has a longer half-life and steadier effect on coagulation, which most cardiologists view as easier to manage than fluctuating dietary K1 intake.

Is this safe during pregnancy and breastfeeding?

Generally yes at the doses provided. D3 is critical for foetal bone development and is often recommended at higher doses during pregnancy (some physicians recommend 1000–2000 IU daily during pregnancy and lactation). K2 status in pregnant women is increasingly recognised as important for both maternal and foetal health. Confirm total daily intake with your gynaecologist — your prenatal vitamin may already contain D3.

Can I verify the batch tested?

Yes. Every batch number printed on the packaging links directly to the Certificate of Analysis published on this product page. Click View Certificate of Analysis in the price panel above to download the COA for the current batch.