Reference figure: vitamin D3 (cholecalciferol)

Vitamin D3/K2 compared

The reference figure is cholecalciferol (vitamin D3) per serving. Label values given in International Units are converted to mass.

Documented batch measurements first, then linked lab reports and sourced declarations. Reports with measurements outside a stated criterion rank last. Equal evidence is ordered by active-ingredient price. This ranks documentation, not health effects.

Prices last checked: Sep 21, 2026, 4:23 AM UTC

Variant comparison, sorted by documented evidence. Missing evidence stays visible. The price in the shop at the time of purchase applies.
Product	Form	Pure active per serving	€ per gram of pure active	€/serving	Effective total	Shop	Selection	Daily total
Lab report linked Documentation, not an efficacy or purity certification.	FormTablets	Pure active per serving500 µg	€ per gram of pure active€166.5833lowest price per gram	€/serving€0.08

How we calculate