BIOGENA SPORTS D3 & K2 Liquid delivers two of the most researched fat-soluble vitamins for bone and muscle health in a single convenient drop — formulated specifically with the increased demands of active training in mind.

The formula pairs 2,000 IU of vitamin D3 with 25 µg of vitamin K2 in a 2:1 ratio, reflecting how these two nutrients function as partners rather than standalone vitamins.

Vitamin D3 supports the absorption of calcium from the gut and helps regulate its concentration in the blood, while vitamin K2 helps direct that calcium toward bone tissue — together, the pair contributes to the maintenance of normal bones.

Vitamin D also supports normal muscle function and immune system activity, both directly relevant to training capacity and recovery, while vitamin K2 plays a role in normal blood clotting.

The K2 component is delivered as K2VITAL®, a branded raw material providing menaquinone-7 (MK-7) — widely regarded as the most bioactive and longest-circulating form of vitamin K2 — at a guaranteed purity of at least 99.7%.

Both vitamins are carried in MCT oil (medium-chain triglyceride oil derived from coconut), which is rapidly absorbed by the body and improves the bioavailability of fat-soluble nutrients like D3 and K2, helping them move more efficiently into circulation.

Manufactured in Austria at Biogena's Good Health World facility in Koppl near Salzburg, the formula is vegan, sugar-free, and free from unnecessary additives under Biogena's pure substance principle.

It's listed on the Cologne List®, a doping-prevention registry that independently screens supplements for banned substances — a relevant assurance for competitive athletes.