Taking Vitamin D3 alone increases your body’s absorption of calcium, but without Vitamin K2, that calcium can end up floating in your bloodstream and depositing in soft tissues like arteries instead of your bones. Vitamin D3 brings calcium in through the gut, while Vitamin K2 activates proteins (osteocalcin and Matrix Gla protein) that guide calcium into the bone matrix and away from cardiovascular tissue. Taking them together ensures calcium goes exactly where your body needs it.

Think of calcium in your bloodstream as a fleet of delivery trucks:

• Vitamin D3 acts as the Loading Dock: It picks up calcium from your digestive tract and puts it onto the highway (your bloodstream).
• Vitamin K2 (MK-7) acts as the GPS Navigation System & Traffic Controller: It directs the trucks straight to their intended destination (your bones and teeth) and blocks them from parking on the side of the road (your arterial walls).

If you only have D3, the delivery trucks get loaded onto the road but wander aimlessly, causing traffic jams in your arteries. K2 gives the trucks exact coordinates so they unload into bone tissue.

Most commercial Vitamin D3 supplements are extracted from sheep’s wool grease (lanolin), making them unsuitable for vegans. PURICA Vitamin D3 is 100% plant-based, derived naturally from pine sterols extracted from loblolly pine trees. It yields identical cholecalciferol (D3)—the exact same biologically active form produced by your skin when exposed to sunlight—without any animal harvesting.

Vitamin K1 primarily supports liver blood clotting, whereas K2 specifically targets bone and cardiovascular health. Among K2 forms, MK-7 (Menaquinone-7) is vastly superior to MK-4 due to its extended bio-availability and long half-life. While MK-4 disappears from the bloodstream within hours, MK-7 remains active for days, maintaining steady therapeutic blood levels with a single daily dose. PURICA uses European-made, 99.9% all-trans MK-7—the purest, most biologically active configuration.

Vitamin D3 acts as a key gene regulator for the immune system, activating immune cell receptors (such as macrophages and T-cells) to respond effectively to seasonal challenges. Combined with K2's role in cellular signaling and vascular protection, this formula provides foundational daily support to keep your immune defenses resilient year-round.

Yes. When paired with adequate dietary calcium, a balanced diet, and regular weight-bearing exercise, daily intake of Vitamin D3 (1,000 IU) and K2 (120 mcg) helps optimize bone mineral density, supporting strong skeletal architecture and reducing the risk of developing brittle bones and osteoporosis in later life.

Yes. Entirely free from lanolin, gelatin, or animal by-products, PURICA pairs plant-derived pine Vitamin D3 with fermented vegan K2 MK-7 inside 100% vegetable capsules, making it certified vegan-friendly from source to capsule.

The recommended adult dosage is 1 capsule daily with or without food. Each capsule delivers 1,000 IU (25 mcg) of Vitamin D3 and 120 mcg of Vitamin K2 (MK-7), meeting daily target requirements in a single, convenient dose.

Yes. In fact, if you take a calcium supplement, adding D3 + K2 is highly recommended. D3 ensures you efficiently absorb the calcium you ingest, while K2 prevents high supplemental calcium levels from accumulating in soft tissue or arterial walls.

Vitamin K2 plays a key role in blood-clotting pathways. If you are currently taking prescription blood-thinning medications (such as warfarin/Coumadin), consult your healthcare practitioner prior to use to ensure proper monitoring.