Ingredients
| Product name: | Thorne Vitamin K |
| Content: | 60 vegetarian capsules |
| For whom: | Adults, Seniors, Athletes |
Supplement Facts per capsule (Serving Size)
| Amount | RI † | |
| Vitamin K2 (MK-4) (menatetrenone) | 5000 mcg | 6667% |
| Vitamin K1 | 1000 mcg | 1333% |
| Vitamin K2 (MK-7) (MenaQ7®) | 90 mcg | 120% |
Ingredients Filler (microcrystalline cellulose), vegacap (hypromellose), anti-caking agent (silicon dioxide), antioxidant (vitamin e (mixed tocopherols)), vitamin k2, vitamin k1.
Explanation of the composition †RI stands for Reference Intake and replaces the RDA (Recommended Daily Allowance). RI is a guideline for the intake of vitamins and minerals in particular. RI and ADH are equal in number.
Usage advice
Suggested use
Take one to two times per day one capsule during a meal with a glass of water.
Stick to the recommended daily dosage, unless advised otherwise.
A varied, balanced diet and a healthy lifestyle are important. Nutritional supplements are not a substitute for a varied diet.
If you have health issues or are taking medication, always consult your doctor before taking certain supplements. More usage advice.
Storage advice Store in a cool, dry and dark place. Not in the refrigerator.
Keep out of reach of children.
Best by date 60 capsules: September 2027
Allergy information / Warnings
| Warning |
| Before using a vitamin K supplement, consult your doctor or pharmacist if used simultaneously with coumarin derivatives (anticoagulants such as warfarin, acenocoumarol and phenprocoumon). |
| This supplement is: |
| Suitable for vegetarians |
| Not suitable for vegans |
Vitamin K: K1 + 2 forms of K2
Thorne’s Vitamin K provides comprehensive support by utilising three clinically studied forms of vitamin K: K1, and K2 (as MK-4 and MK-7).
Vitamin K2, in the form of MK-4, helps to support bone strength and density, as well as the health of the blood vessels. Vitamin K2 in the extensively researched MenaQ7® MK-7 form provides additional K2 support.
The formula is designed to help maintain bone mineral density and support healthy blood vessels.
Vitamin K1
Vitamin K1 is best known for supporting normal, healthy blood clotting. Vitamin K1 is most commonly found in green leafy vegetables such as kale, spinach, Swiss chard and parsley.
Difference between MK-4 and MK-7
MK-4 and MK-7 are both natural forms of vitamin K2. They occur naturally in various foods: MK-4 is found mainly in animal products, whilst MK-7 is found primarily in fermented foods, such as natto. Although they come from different sources, they are both forms of vitamin K2 with largely overlapping functions in the body.
The main difference between MK-4 and MK-7 is how long they remain active in the body. MK-4 has a short half-life and is broken down relatively quickly, which means that blood levels also fall more rapidly. To maintain sufficient levels in the bloodstream, higher or repeated doses are therefore often required. MK-7, on the other hand, has a much longer half-life and remains in the bloodstream for longer. As a result, it can be effective even at much lower doses.
The fact that MK-4 is usually taken in higher doses does not therefore mean that it is more potent than MK-7. It mainly reflects the difference in duration of action and bioavailability: MK-4 is short-acting, whilst MK-7 remains active for a longer period.
For this reason, supplements are also dosed in different units. MK-4 is usually expressed in milligrams (mg), whilst MK-7 is generally given in micrograms (mcg). As a result, the dosages appear to differ significantly, but this is mainly due to the different properties of the two forms and not because one form is, by definition, stronger or better than the other.
Vitamin K and magnesium both help maintain normal bones. Although they fulfil different functions in the body, together they support normal bone health.
Vegetarian capsule
Most vitamin K supplements come in a softgel or gelatine capsule. Thorne Vitamin K capsules are vegetarian, making the product suitable for vegetarians.
Smeets & Graas:
- Official Thorne EU-distributor
- Selling Thorne products since 2006
- Keeping all products in stock as standard
- Offering all Thorne products approved for sale in the EU
- In direct contact with Thorne
- Providing expert advice on all Thorne products
Thorne | Supporting your health
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Patented ingredients
MenaQ7® Vitamin K2 is a trademark of NattoPharma ASA
Other information
Dietary supplement Combination supplement
Produced by Thorne Research Inc.
Summerville USA
For Smeets & Graas
G. Meirstraat 11
9728 TB Groningen
050 850 36 88
Last page change
9 juli 2026
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