Size
Osavi Vitamin K2 MK-7
Osavi's take on vitamin K2, in a softgels format that is easy to keep to day after day.
Why people take it
- Vitamin K contributes to the maintenance of normal bones
- Vitamin K contributes to normal blood clotting
How to use
Take as directed on the pack, ideally with food and at the same time each day.
Good to know
- Choose from 2 sizes: 60 softgels / 120 softgels
- Format: softgels
- Caffeine free
A food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.
At a glance
£0.16
per daily dose
Limited
evidence for vitamin k2 (mk-7)
Our honest take
One softgel gives 100 µg of vitamin K2 as menaquinone-7 (133% of the daily reference intake) in MCT oil. That is a typical, sensible amount; most people get enough vitamin K from leafy greens, and there is no authorised claim that K2 does anything vitamin K in general does not. It is a simple, clean formula, but note the softgel is bovine gelatine, so it is not suitable for vegetarians or vegans. Anyone on warfarin or other vitamin K antagonists must not start it without their anticoagulation clinic.
- You want vitamin K2 on its own, separate from vitamin D
- You eat few leafy greens or fermented foods
- You take warfarin or another blood thinner that works against vitamin K
- You are vegetarian or vegan: the softgel is bovine gelatine
- You already take a D3 + K2 product
The science
Vitamin K2 (MK-7)· evidence: Limited
Vitamin K2 (menaquinone, usually as MK-7 in supplements) is one of the forms of vitamin K. The body needs vitamin K to make proteins involved in blood clotting and bone. Most adults get enough vitamin K from green vegetables, vegetable oils and some fermented foods, and true deficiency is rare in healthy adults.
Vitamin K2 is often sold alongside vitamin D3 on the idea that it helps direct calcium into bone. Trials of K2 on bone density and fractures are small and mixed, and the effect in well-nourished people is uncertain. Claims about arteries or heart health are not established.
Adding K2 to a vitamin D supplement is reasonable but not necessary for most people. It mainly adds cost.
Vitamin K contributes to normal blood clotting. Vitamin K contributes to the maintenance of normal bones. (Applies where a daily dose gives at least 15% of the NRV, i.e. 11.25 µg.)
Typical dose: Adults need about 1 µg per kg of body weight a day (around 70 µg for a 70 kg adult), mostly met by diet. Supplements usually give 45 to 200 µg of MK-7.
Safety: Vitamin K can stop warfarin and similar anticoagulants (vitamin K antagonists) working properly. Anyone on warfarin must not take vitamin K supplements without talking to their GP or anticoagulant clinic. The FSA notes that 1 mg or less a day from supplements is unlikely to cause harm in other people.
Research we looked at:
NHS. Vitamin K. nhs.uk/conditions/vitamins-and-minerals/vitamin-k
EFSA NDA Panel. Dietary reference values for vitamin K. EFSA Journal 2017;15(5):4780.
Mott A, Bradley T, Wright K, et al. Effect of vitamin K on bone mineral density and fractures in adults: an updated systematic review and meta-analysis of randomised controlled trials. Osteoporos Int 2019;30(8):1543-1559.
Ingredients & nutrition
Always check the pack you receive, as manufacturers sometimes update recipes.
How to use
Price per dose & how it compares
| Product | Size | Price | Per daily dose |
|---|---|---|---|
| This product | 60 softgels | £10.99 | £0.18 |
| This product | 120 softgels | £19.99 | £0.16 |
| Doctor's Best Natural Vitamin K2 MK7 with MenaQ7 | from £15.56 | – | |
| Osavi Vitamin D3 + K2 | from £12.99 | – | |
| Cytoplan Vitamin D3 + K2 | from £19.99 | £0.33 |
Cost per daily dose lets you compare packs of different sizes fairly.Worked out from our current prices.
Food supplements should not replace a varied, balanced diet and healthy lifestyle. General information, not medical advice. Speak to your GP or pharmacist first if you are pregnant or breastfeeding, have a medical condition or take medication.
Osavi's take on vitamin K2, in a softgels format that is easy to keep to day after day.
Why people take it
- Vitamin K contributes to the maintenance of normal bones
- Vitamin K contributes to normal blood clotting
How to use
Take as directed on the pack, ideally with food and at the same time each day.
Good to know
- Choose from 2 sizes: 60 softgels / 120 softgels
- Format: softgels
- Caffeine free
A food supplement, not a substitute for a varied diet and healthy lifestyle. Do not exceed the stated dose. Keep out of reach of children.
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