Now Vitamin D3 & K2 – 120 caps
$29.80
Vitamin supplement: Vitamin D3 and K2 in a single formula. Now Foods combination providing both fat-soluble vitamins in capsule form. D3 and K2 work together to support calcium distribution, with D3 enhancing absorption and K2 directing utilization.
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What is Now Vitamin D3 & K2 and who is it for?
Now Vitamin D3 & K2 combines two fat-soluble vitamins that work synergistically in calcium and bone metabolism. This is relevant for anyone prioritizing bone wellness or looking to address nutritional gaps, particularly those with limited sun exposure, dietary restrictions, or life stages where bone health support matters.
The combination approach makes sense because D3 and K2 have complementary roles: D3 increases calcium absorption in the intestines, while K2 activates proteins that direct calcium to bone tissue rather than soft tissues. Rather than taking these separately, a combined formula simplifies daily supplementation while supporting the coordinated functions these vitamins perform in your body.
Fairfield Nutrition Thoughts
D3 and K2 deficiency is common, particularly in people with limited sun exposure or dietary gaps. While D3 supplementation is well-established, pairing it with K2 is increasingly recognized as important for directing calcium metabolism appropriately.
Now Foods is a reliable manufacturer with GMP certification and transparent sourcing. This combination format removes the friction of managing two separate supplements, making it practical for daily use while supporting the coordinated roles these nutrients play in calcium metabolism.
Why This Formulation / How It Works
The D3 and K2 pairing addresses a common gap in supplementation strategy. Many people supplement D3 alone without considering K2’s role in calcium utilization. This combination ensures both nutrients are present to support the full pathway of calcium absorption and deposition.
Now Foods uses vitamin D3 (cholecalciferol), the form your body produces from sunlight exposure, rather than D2. K2 is typically provided as menaquinone-7 (MK-7), the form with the longest half-life and most research supporting systemic distribution. GMP manufacturing ensures consistent potency across batches.
Vitamin D3’s Role in Calcium Absorption
Vitamin D3 functions as a hormone regulator in the intestines, increasing the expression of calcium-binding proteins that facilitate calcium absorption. Without adequate D3, your body absorbs only 10-15% of dietary calcium; with D3, this increases to 30-40%. D3 is found in high concentrations in kidney and bone tissue, where it regulates calcium homeostasis at a systemic level.
Vitamin K2’s Role in Calcium Direction
K2 activates osteocalcin and matrix Gla protein (MGP), two proteins essential for directing calcium into bone matrix and away from soft tissues like arteries. K2 is concentrated in bone tissue and is involved in the carboxylation reactions that activate these calcium-binding proteins. Research shows K2 status correlates with bone density and vascular calcification patterns.
When to Consider This
This combination makes sense if you’re:
Building foundational bone wellness support, particularly if you’re over 40 or in a life stage where bone density is a priority.
Living in a climate with limited sun exposure or spending most of your time indoors, reducing your natural D3 production.
Following a dietary pattern that limits vitamin K2 sources (fermented foods, grass-fed dairy, natto), making supplementation practical.
Supplement strategy: This works well as a foundational daily supplement and pairs naturally with other bone-supporting nutrients like magnesium and calcium if those are part of your protocol. Many people introduce this as part of establishing basic nutritional foundations.
⚠️ Not suitable for: People taking warfarin or other vitamin K antagonists (consult your healthcare provider), those with hypercalcemia or kidney disease affecting calcium metabolism, pregnant or breastfeeding individuals (check with healthcare provider on dosing).
How to Use
Take as directed on the label, typically 1 capsule daily with food. The fat-soluble nature of both D3 and K2 means they’re absorbed better when taken with dietary fat, so taking with a meal containing healthy fats optimizes absorption.
Consistency matters more than timing with foundational supplements like this. Daily use supports steady vitamin D and K2 status rather than fluctuating levels. If you’re also taking other supplements, space them out by a few hours to avoid potential interactions, though D3 and K2 are generally compatible with most supplements.
Ingredients
Per capsule:
Vitamin D3 (as Cholecalciferol) – 1000 IU or 25 mcg
Vitamin K2 (as Menaquinone-7) – 45 mcg
Other Ingredients: Vegetable cellulose capsule, microcrystalline cellulose, silica, magnesium stearate
Allergen information: Free from common allergens. Vegetarian/vegan capsule.
Common Questions
Why take D3 and K2 together instead of separately?
They have complementary roles in calcium metabolism. D3 increases absorption; K2 directs utilization. Taking them together simplifies your routine and ensures both nutrients are present to support the full pathway. You can take them separately if you prefer, but the combination approach is more convenient.
Is this enough D3 for someone with very low sun exposure?
This provides baseline support, but individual needs vary based on sun exposure, skin tone, geography, and baseline status. Many practitioners recommend checking vitamin D levels to determine if higher doses are appropriate for your situation. This is a good foundational dose for maintenance once adequate levels are established.
Can I take this with calcium supplements?
Yes, they work together. D3 helps your body absorb calcium, and K2 helps direct it to bone. If you’re taking calcium supplements, space them a few hours apart from other minerals to avoid absorption competition, but D3 and K2 enhance calcium utilization rather than interfere with it.
Is the K2 form important?
Yes. K2 exists in different forms (MK-4, MK-7, etc.). MK-7 has the longest half-life and distributes systemically, making it the most researched form for bone and cardiovascular support. Now Foods typically uses MK-7, which is the preferred form for supplementation.
Warnings & Storage
Do not use if: You're taking warfarin or other vitamin K antagonists without medical supervision, you have hypercalcemia or kidney disease affecting calcium metabolism, you're pregnant or breastfeeding (consult healthcare provider on appropriate dosing).
Cautions: If you're on blood thinners, maintain consistent vitamin K intake rather than fluctuating doses. Vitamin K doesn't counteract blood thinners when intake is consistent. If you have parathyroid disease or calcium metabolism concerns, check with your healthcare provider before starting.
Storage: Store in a cool, dry place away from direct sunlight. No refrigeration required.
Always consult your healthcare professional before use if you have any pre-existing conditions or are taking medications.
| Weight | .08 kg |
|---|---|
| Size | 90 caps, 180 caps |
Brand
Now
