NOW Supplements Vitamin D3 K2, 1,000 IU/45 mcg, Supports Bone and Dental Health, 180 Vegetarian Capsules – Vegan, Non-GMO, Gluten-free, Kosher

Vitamin D3 and vitamin K2 are two essential nutrients that work together to support your body's calcium metabolism. NOW Foods combines 1,000 IU of D3 with 45 mcg of K2 (as MK-7) in a single vegetarian capsule – a convenient way to help maintain healthy bones and teeth.

What to Look For in a D3 and K2 Supplement

Not all D3 and K2 supplements are the same. The form of K2 matters: MK-7 is preferred for its sustained activity in the body. The dosage ratio should provide enough K2 to support proper calcium utilization – typically 45–100 mcg per 1,000–5,000 IU of D3. This product offers 45 mcg MK-7 with 1,000 IU D3, a balanced combination for daily maintenance. Quality certifications are also important. NOW Foods supplements are Non-GMO, Kosher, and Soy-free, and the company holds NPA A-rated GMP certification, meaning every batch is tested for potency, purity, and stability. Third-party testing ensures you get exactly what’s on the label. Avoid products with unnecessary fillers or artificial ingredients. This formula is vegan, gluten-free, and made without common allergens.

Key Health Benefits

Bone and Dental Health: Vitamin D3 helps your body absorb calcium from food, while vitamin K2 activates proteins that bind calcium to the bone matrix and tooth enamel. Together, they help maintain strong, healthy bones and teeth. This is especially important as we age, when bone density naturally declines. Many users report that this formula helps them feel confident about their bone health, especially those with dietary restrictions or limited sun exposure.

Calcium Utilization: By supporting proper calcium distribution, vitamin K2 helps direct calcium to bones and teeth, away from soft tissues. This synergistic action is key for maintaining overall skeletal health.

Immune Function: Vitamin D3 is known to help support normal immune function. Adequate levels of vitamin D are associated with a healthy immune response. This supplement provides 1,000 IU of D3, a moderate dose suitable for daily maintenance.

Users consistently appreciate the convenience of a combined formula. One reviewer mentioned that they switched to this product after learning that K2 is necessary to facilitate vitamin D’s effects. Another noted that their vitamin D levels improved and stayed elevated with regular use.

How Vitamin D3 and K2 Work Together

Vitamin D3 (cholecalciferol) supports the production of calcium-binding proteins in the gut, which enhances calcium absorption. Vitamin K2 (menaquinone) plays a different but complementary role: it helps activate osteocalcin, a protein that binds calcium to the bone matrix, and matrix GLA protein (MGP), which helps maintain arterial flexibility. This means D3 brings calcium into the bloodstream, and K2 helps direct it towards bones and teeth while supporting cardiovascular health.*

The form of K2 in this supplement is MK-7, derived from natto (fermented soy). MK-7 has a longer half-life than MK-4, allowing for more sustained support with once-daily dosing. Research suggests that MK-7 is highly bioavailable and effective at supporting healthy calcium metabolism. By combining these two nutrients in one product, NOW Foods makes it easy to support both bone density and heart health without taking multiple pills.

Vitamin D3 and vitamin K2 work as a team. Vitamin D3 helps your body absorb calcium from the diet. But calcium needs proper direction – that’s where K2 comes in. Vitamin K2 supports the activation of proteins that help deposit calcium into bones and teeth, while helping maintain arterial flexibility. Without enough K2, calcium may end up in soft tissues instead of where it’s needed most. Taking them together helps ensure calcium goes to the right places. This combination has become a cornerstone for those focused on bone health and cardiovascular support.

Frequently Asked Questions

Can I take vitamin D3 and K2 separately? Yes, but combining them in one capsule ensures consistent dosing and convenience. Many people prefer the simplicity of a single daily capsule.

What is the best time to take D3 and K2? Since vitamin D is fat-soluble, taking it with a meal containing fat may enhance absorption. K2 is also fat-soluble. Taking the supplement with food is recommended.

Are there any side effects? This supplement is well-tolerated at the recommended dose. As with any supplement, consult your healthcare practitioner before starting, especially if you are taking blood thinners (e.g., warfarin) or have kidney issues. Vitamin K can interfere with anticoagulant therapy.

How long does one bottle last? With 180 vegetarian capsules and a suggested serving of one capsule per day, this bottle provides a six-month supply.

Recommended Dosage

The suggested use for this product is one capsule daily. This provides 1,000 IU (25 mcg) of vitamin D3 and 45 mcg of vitamin K2 (as MK-7). These dosages are appropriate for most adults for general maintenance. If you have specific health concerns or higher requirements, consult your healthcare professional. Some individuals may need higher doses of vitamin D3 based on blood levels, but this product is an excellent starting point. Always follow the label directions and do not exceed recommended serving unless advised by a doctor.

*These statements have not been evaluated by Health Canada. This product is not intended to diagnose, treat, , or prevent any disease.