Douglas Laboratories

Vitamin K2 Menaquinone-7

Product Quality

Overall evidence-based quality rating

How Product Quality is assessed

8.47Very Good

Price

$0.62/serving

Retail

$37.40

Container

60 servings

Serving

1 Vegetarian Capsule

Brand Quality

8.41

Why this score

Testing practices

Lot Tested
Third-Party Lab Tested
Transparent Batch-Specific COAs
ISO 17025 Lab

Testing coverage

Identity
Purity
Potency
Heavy Metals
Raw Ingredient Testing

Certifications

NSF Certified

Manufacturing standards

cGMP Certified
Made in USA

Innovation

Clinically Studied Product

Active Ingredients

Vitamin K2(Vitamin K2 (Form: as Menaquinone-7))
90 mcg
Ingredient research · Vitamin K2
Vitamin K2 is a family of menaquinones that activates proteins involved in normal blood clotting, bone mineralization, and calcium regulation. Supplements are mainly used to support bone health, while possible benefits for vascular calcification and cardiovascular health remain less certain and may differ among forms such as MK-4 and MK-7.
- Supports selected osteocalcin carboxylation markers in postmenopausal osteoporosis.
Top References
Efficacy and safety of vitamin K2 for postmenopausal women with osteoporosis at a long-term follow-up: meta-analysis and systematic review

Ranking

Vitamin K/K2 Products87%

Inactive Ingredients

9.3 Safe

Microcrystalline CelluloseIdeal
Hydroxypropyl MethylcelluloseIdeal
Ascorbyl PalmitateSafe

These statements have not been evaluated by the Food and Drug Administration. Any products and informational content displayed on this page are not intended to diagnose, treat, cure, or prevent any disease.