Trans vitamin K2 MK7 stands out for its long half-life in the body, up to 72 hours, versus just a few hours for vitamin K1 or the MK4 form — allowing continuous action on target tissues like bone and the vascular system. The trans isomer is the only form recognised by human biological receptors, making it markedly more effective than the cis or synthetic forms sometimes found in less rigorous formulations.

Vitamin K2 MK7 contributes to the maintenance of normal bone by helping activate osteocalcin, a protein essential for binding calcium into the bone matrix. It also contributes to normal blood clotting and helps direct calcium toward where the body needs it rather than toward vessel walls — both claims authorised by EFSA. Its synergy with vitamin D3 is well documented: together, the two vitamins support efficient use of calcium by the body.

Take 1 capsule a day with a meal containing a little fat, since vitamin K2 MK7 is fat-soluble and dietary lipids aid its absorption. Regular intake is best given menaquinone-7’s extended half-life. A 60-capsule bottle covers a 2-month course; no need to split the dose across the day.

Made by Dynveo, a French laboratory in Montpellier, with purity verified by HPLC (high-performance liquid chromatography) to confirm the exclusive trans isomer and rule out the cis form. Packed in a biodegradable, compostable bottle.

People on anticoagulant medication (vitamin K antagonists) must consult their doctor before supplementing with vitamin K2, as it can affect blood clotting balance. Do not exceed the recommended daily dose. If pregnant, breastfeeding, or on medication, seek medical advice before use. This food supplement is not a substitute for a varied and balanced diet and a healthy lifestyle. Store in a cool, dry place away from light, out of children’s reach.

What are the advantages of K2 MK7 over K1?

Vitamin K1, found in green vegetables, mainly acts in the liver for blood clotting. K2 MK7 has superior bioavailability and a much longer half-life (up to 72 hours vs. a few hours for K1), acting beyond the liver on bones and the cardiovascular system.

Why pair vitamin K2 MK7 with vitamin D3?

Vitamin D3 aids intestinal calcium absorption, while K2 MK7 activates the proteins that direct that calcium toward bones. Without K2, calcium absorbed via D3 risks depositing in soft tissue.

Is it suitable for vegans?

Yes — the menaquinone-7 comes from chickpea biofermentation with no animal-derived material, in a pullulan capsule with organic acacia fibre as the only excipient.

Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.

Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.

Where is the shop?

Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.

Can I order online or collect in store?

Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.