Sports Research
High-quality formulation with bioavailable forms and coconut oil for absorption, though third-party testing details could be more transparent.
Evaluated Feb 15, 2026
·AI-evaluatedThorne
Superior third-party testing transparency with detailed certificates of analysis and NSF certification.
Life Extension
Better optimized D3:K2 ratio with extensive research backing and independent testing verification.
Pure Encapsulations
Hypoallergenic formulation with superior manufacturing standards and comprehensive purity testing.
Uses high-quality D3 (cholecalciferol) and K2-MK7 forms with minimal inactive ingredients
Good manufacturing practices but limited transparency on specific testing protocols
Excellent bioavailable forms with coconut oil to enhance fat-soluble vitamin absorption
Clear dosing and ingredient listing, though some manufacturing details could be more specific