Efectiv Vitamin D3 & K2, 4000 IU D3 With 180mcg K2 (MK-7) Per Daily Capsule
Efectiv Nutrition Vitamin D3 & K2 is a paired fat-soluble vitamin supplement in capsule form. Each capsule delivers 4000IU Vitamin D3 (Cholecalciferol) and 180mcg Vitamin K2 (Menaquinone-7). The 60-capsule bottle provides 60 single-capsule servings.
Vitamin D3 contributes to normal muscle function, the maintenance of normal bones, the normal function of the immune system and normal calcium absorption under EU health claim authorisation. At 4000IU per capsule this represents 500% of the Reference Intake, a dose relevant for UK residents where vitamin D synthesis from sunlight is insufficient for 7 to 8 months of the year. The NHS formally recommends vitamin D supplementation between September and April for the general UK population. Vitamin K2 as MK-7 is the long-chain menaquinone with a 72-hour half-life, supporting the activation of osteocalcin and matrix Gla-protein, which direct calcium into bone and connective tissue rather than arterial walls. Co-supplementation of D3 and K2 is the established practice: D3 increases calcium absorption; K2 ensures that calcium is deposited appropriately.
What separates this product from a standalone vitamin D supplement is the K2 pairing. High-dose vitamin D3 without adequate K2 can elevate calcium levels in soft tissue as well as bone. K2 at 180mcg (MK-7 form) provides the co-factor that ensures this calcium goes where it is needed. Selling them together at a single-capsule daily dose makes compliance simpler than managing two separate bottles.
Efectiv D3 & K2 suits UK adults supplementing through autumn and winter, athletes requiring bone and immune support during high-volume training, and anyone with low sun exposure or known suboptimal vitamin D status. It is not a therapeutic treatment for diagnosed vitamin D deficiency, which requires GP-supervised higher loading doses. Contains no major allergens.
