Women enjoying life, vitamin k2 hero photo

Ingredient Repository · Ingredient

Ingredient

Vitamin K2 puts calcium where it belongs, delivered by live probiotics.

An essential vitamin that guides calcium into your bones and teeth while keeping your arteries clear.

What it is

Vitamin K2 (specifically the long-lasting MK-7 form) is a fat-soluble vitamin that helps your body handle calcium properly. While vitamin D helps your body absorb calcium, vitamin K2 acts like a traffic controller, directing calcium into your bones and teeth while keeping it out of your blood vessels. Paired with friendly probiotics, it stays active in your body for long-lasting support.

Also known as: Menaquinone, MK-7, Menaquinone-7

Key benefits

  • Directs calcium directly into your bones and teeth so they stay strong and dense.
  • Helps keep calcium out of your blood vessels, supporting flexible and healthy arteries.
  • Works together with vitamin D3 so your body uses dietary calcium effectively.
  • Promotes long-term bone strength and heart wellness as you age.

Amplified by probiotics

Friendly gut bacteria like Bifidobacteria and Lactobacilli naturally produce small amounts of vitamin K2 in your digestive tract. Taking live probiotics protected by a micro-shield fosters a healthy gut environment, boosting natural vitamin K production and producing organic acids that help your body absorb fat-soluble vitamin K2 and calcium smoothly.

Typical dose

45–180 µg/day

The evidence

Evidence: strong

Human studies show that taking MK-7 long term switches on osteocalcin (the protein that locks calcium into bone) and MGP (a protein that keeps calcium out of artery walls). This slows age-related bone loss and artery stiffening in women after menopause and in older adults. (Knapen et al. 2013, Osteoporos Int; van Ballegooijen et al. 2017, Adv Nutr; Maresz K. 2015, Integr Med)

  1. Knapen MH, et al. Three-year low-dose menaquinone-7 supplementation helps decrease bone loss in healthy postmenopausal women. Osteoporos Int. 2013;24(9):2499-2507 PubMed ↗
  2. van Ballegooijen AJ, et al. The Synergistic Interplay between Vitamins D and K for Bone and Cardiovascular Health. Int J Endocrinol. 2017;2017:7454960 PubMed ↗
  3. Maresz K. Proper Calcium Use: Vitamin K2 as a Promoter of Bone and Cardiovascular Health. Integr Med (Encinitas). 2015;14(1):34-39 PubMed ↗

Safety & who should check first

Vitamin K2 is safe for daily use. However, if you take blood-thinning medication (such as warfarin or coumarin forms), do not take vitamin K2 supplements without speaking to your doctor first. Pregnant or breastfeeding women should consult their doctor or pharmacist before use.