Source Naturals Vitamin K2 + D3 Bone & Heart Health Complex – 400 IU Vitamin D3 & 100 mcg Vitamin K2 (MK-7) with Calcium – 60 Tablets

Key Health Benefits

Vitamin D3 and K2 work together to keep your bones strong and your heart healthy. Vitamin D3 helps your body absorb calcium from food, while Vitamin K2 (as menaquinone-7) directs that calcium to your bones and away from your arteries. This dynamic duo supports normal bone density and may help maintain arterial flexibility. Each tablet provides 400 IU of cholecalciferol (D3) and 100 mcg of MK-7 K2, a form that lasts up to 12 times longer in the body than other K2 forms.*

Understanding the Synergy: How D3 and K2 Work Together

The partnership between Vitamins D3 and K2 is all about calcium management. Once D3 boosts calcium absorption in the gut, K2 activates osteocalcin and matrix GLA protein (MGP). Osteocalcin binds calcium to bone tissue, while MGP helps prevent calcium from building up in blood vessel walls. This one-two punch helps maintain calcium balance, supporting both skeletal strength and cardiovascular health. The MK-7 form offers a sustained release, keeping those proteins activated throughout the day.

Why Combine Vitamin D3 and K2?

Taking Vitamin D3 alone can increase calcium absorption, but without enough K2, that calcium may end up in soft tissues like arteries. By pairing D3 with K2, you ensure calcium goes where it's needed—your bones—and not where it's not. This synergy is particularly beneficial as we age and bone density naturally declines. Source Naturals Vitamin K2 + D3 provides a balanced 400 IU D3 and 100 mcg K2 (MK-7) to support this critical process.*

Quality You Can Trust

Source Naturals has been a trusted supplement manufacturer for over 40 years, founded in 1982 by CEO Ira Goldberg. The Vitamin K2 + D3 tablets are manufactured in Scotts Valley, CA, USA under strict Good Manufacturing Practices (cGMPs) established by the US FDA. This ensures high quality and purity. The product contains no yeast, dairy, egg, gluten, or wheat, and no artificial colors, flavours, or preservatives. With its NattoMK-7 form of vitamin K2, this complex offers superior bioavailability for optimal bone and heart support.*

Recommended Dosage

For adults, take one tablet daily with a meal containing fat for best absorption. Each tablet provides 400 IU Vitamin D3 and 100 mcg Vitamin K2 (as MK-7). These levels are suitable for general maintenance. If you have specific health concerns or take medication (especially blood thinners), consult your healthcare professional. Always read the label and follow directions for use.

Frequently Asked Questions

When is the best time to take Vitamin D3 and K2? Take with a meal containing fat for optimal absorption. Many people take them with breakfast or lunch.

Can I take Vitamin D3 and K2 with other supplements? Yes, they pair well with calcium, magnesium, and other bone-support nutrients. However, if you take blood thinners (e.g., warfarin), consult your doctor before taking Vitamin K2, as it may interfere with medication.

Are there any side effects? Generally well tolerated. High doses of Vitamin D3 may cause calcium imbalance; stick to recommended dosages. K2 (MK-7) is safe for most people.

How long does it take to see results? Benefits are cumulative. Consistent daily use supports long-term bone and heart health.

Where can I buy? Available at chemists and health food stores.

What makes MK-7 superior? The MK-7 form of vitamin K2 lasts up to 12 times longer in the body than other forms, providing sustained support for calcium regulation throughout the day.

* These statements have not been evaluated by the Therapeutic Goods Administration (TGA). This product is not intended to diagnose, treat, or prevent any disease. Always read the label and follow directions for use.