You are looking for a supplement that supports both bone health and cardiovascular function. The combination of vitamin D3 and K2 has gained attention for its synergistic effects. In this review, we evaluate the NOW Supplements Vitamin D-3 & K-2 to help you decide if it is right for you. For a deeper look at standalone vitamin D3 options, check out our NOW foods vitamin D3 review.
Whether you are new to supplementation or looking to upgrade your current stack, understanding the benefits of D3 and K2 together is essential. This guide covers the key features, buying criteria, and answers to common questions so you can make an informed choice.
Pros
- Dual nutrient formula (D3 + K2) for synergistic bone and heart benefits.
- Non-GMO, Soy Free, and Kosher certified for clean supplementation.
- GMP Quality Assured with in-house lab testing for purity and potency.
- Affordable price point for a two-month supply.
- Trusted brand with decades of experience in natural supplements.
Cons
- Some users may prefer higher vitamin D3 dosages (e.g., 2000 IU) for stronger immune support.
- Capsules are beige in color, which may indicate natural ingredients but could be less visually appealing.
- No customer reviews available yet, so real-world feedback is limited.
The NOW Supplements Vitamin D-3 & K-2 combines 1000 IU of vitamin D3 with 45 mcg of vitamin K2 in a single veg capsule. This formula is designed for adults seeking comprehensive support for bone density, cardiovascular function, and immune health. It's an excellent choice for those who prefer a dual-nutrient supplement over taking separate pills.
The synergy between D3 and K2 is a standout feature. Vitamin D3 enhances calcium absorption, while K2 directs that calcium to the bones and teeth, preventing it from depositing in arteries. This combination supports both skeletal strength and heart health. The 1000 IU D3 dosage is suitable for general maintenance, and the 45 mcg K2 (as MK-7) ensures optimal bioavailability.
NOW is a reputable manufacturer with GMP Quality Assurance and third-party testing. The capsules are vegan, non-GMO, soy-free, and kosher. Each bottle contains 120 capsules, providing a two-month supply when taken as directed. The beige color reflects the natural ingredients, and the packaging is straightforward and informative.
One potential drawback is the relatively modest vitamin D3 dose of 1000 IU. Some individuals, especially those with deficiencies or limited sun exposure, may require a higher dosage. Additionally, the lack of customer reviews makes it harder to gauge long-term satisfaction. However, NOW's longstanding reputation mitigates this concern.
Overall, the NOW Vitamin D-3 & K-2 supplement offers a well-researched, high-quality combination at an affordable price. It's ideal for anyone looking to support bone and cardiovascular health with a clean, trusted brand. While the D3 dose may be low for some, it's a solid starting point for daily maintenance.
Buying Guide
Dosage and Potency
The NOW Supplements Vitamin D-3 & K-2 provides 1,000 IU of vitamin D3 and 45 mcg of vitamin K2 per capsule. This dosage is well researched for maintaining healthy bones and supporting immune function. Many users find this amount ideal for daily maintenance without overdoing it.
If you require higher doses, you might consider a separate D3 supplement. For comparisons, see our nature made vitamin D3 review for another popular option.
Form and Absorption
Vitamin D3 is fat soluble, so taking it with a meal containing fat improves absorption. Vitamin K2 works alongside D3 to direct calcium into bones rather than soft tissues. This combination is especially beneficial for those focused on long term bone density.
Magnesium also plays a role in vitamin D metabolism. To learn more about how magnesium supports overall health, read about magnesium glycinate benefits for men.
Quality and Certifications
NOW Foods is a trusted brand with decades of experience. This product is Non-GMO, Kosher, and Soy Free. It also carries GMP Quality Assured certification, meaning every batch is verified for potency and purity. Third party audits confirm the manufacturing process meets high standards.
For more verified supplements, browse our reviews category to see other products that pass rigorous quality checks.
Value and Trust
With over 50 years in the industry, NOW Foods is a family owned company known for transparency. The vitamin D3 and K2 capsules offer a convenient two in one formula at a reasonable cost. You get 120 capsules per bottle, which lasts about four months at one capsule daily.
If you are exploring different supplement forms, such as magnesium, check our guide on types of magnesium for men to see how other nutrients complement your regimen.
Final Thoughts
For bone and cardiovascular support, the NOW Supplements Vitamin D-3 & K-2 is an excellent choice. If you prefer a higher dose of vitamin D3 alone, the same NOW Supplements Vitamin D-3 & K-2 also offers flexibility by allowing you to adjust your intake. Both options come from a reputable manufacturer with verified quality.
Frequently Asked Questions
What is the difference between vitamin D3 and D2?
Vitamin D3 (cholecalciferol) is the form produced by your skin from sunlight. Vitamin D2 (ergocalciferol) comes from plant sources. D3 is generally considered more effective at raising and maintaining blood levels of vitamin D.
Why combine vitamin D3 with K2?
Vitamin D3 increases calcium absorption, while vitamin K2 helps direct that calcium to bones and teeth instead of arteries. Together they support bone density and cardiovascular health. This synergy makes the combination popular among health conscious individuals in 2026.
How many capsules should I take per day?
The recommended serving is one capsule daily. Each capsule provides 1,000 IU of D3 and 45 mcg of K2. Always follow the label and consult your healthcare provider for personalized advice.
Is this supplement suitable for vegans?
The capsules are vegetable based and the product is labeled as Kosher and Non-GMO. However, vitamin D3 is typically derived from lanolin (sheep wool), so it may not be considered vegan. If you need a plant based alternative, look for vitamin D2 or vegan D3 from lichen.
