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Advanced Orthomolecular Research AOR, Advanced Series, Peak K2, 90 Veggie Caps

$37.47 $37.47 (Saved $12.49)

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Advanced Orthomolecular Research AOR, Advanced Series, Peak K2, 90 Veggie Caps

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$0.42/Veggie Caps
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Advanced Orthomolecular Research AOR, Advanced Series, Peak K2, 90 Veggie Caps

In Stock
  • Expiration Date: July 2020
  • Shipping Weight:
    0.13 lbs
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  • Product Code: AOR-08007
  • UPC Code: 624917080070
  • Package Quantity: 90 Veggie Caps
  • Dimensions:
    2.2 x 2.2 x 3.8 in, 0.1 lbs
    Switch to Metric units

Product Rank:

#30 in Vitamin K >
Frequently Purchased Together
Product Overview


  • Innovative Research
  • Scientific Integrity
  • High Dose Menatetrenone
  • 90 Servings
  • Dietary Supplement
  • Vegan
  • GMP Manufacturing
  • Independent Testing
  • Quality Assured

Discussion: Peak K2 is menatetrenone (MK-4), a form of vitamin K2 made in the body form phylloquinone (vitamin K1) and distinct from the menaquinones made by probiotic bacteria. Available science indicates that vitamin K2 — and especially menatetrenone — is superior to Vitamin K1. Clinical trials have shown that high-dose vitamin K2 does not cause excessive or abnormal blood clotting, although it will interfere with "blood thinning" medications.

Suggested Use

Adult Dosage: Take 1 capsule up to three times daily with food, or as directed by a qualified health care practitioner.

Other Ingredients

Microcrystalline cellulose.

Capsule: hypromellose.

AOR guarantees that no ingredients not listed on the label have been added to the product. Contains no wheat, gluten, corn, nuts, peanuts, soy, dairy, eggs, fish, shellfish or any animal byproducts.


Do not use if seal under cap is broken.

Caution: Persons taking anticoagulant ("blood thinning") medications such as warfarin (Coumadin) must not take this supplement.

Note: Store in a cool dark place. Harmless clumping may occur at temperatures exceeding 95°F.


While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
Supplement Facts
Serving Size: 1 Capsule
  Amount Per Serving % Daily Value†
Menatetrenone (Vitamin K2 [MK-4]) 15 mg 18,750%
†Daily Value based on a 2000 calorie diet.    
iHerb Customer Reviews

Misleading Ingredients

Posted by iHerb Customer on April 22 2018 | Verified Purchase

I bought this product as it was stated on iHerb website that "Other Ingredients: Microcrystalline cellulose". It actually contains sodium stearyl fumarate. I'm not happy at all.

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Peak K2

Posted by iHerb Customer on April 16 2018 | Verified Purchase

The pills are small and easy to swallow. The effects on my body to increase the flexibility of my bones will be seen later than sooner.

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Item received is not the same as pictured.

Posted by iHerb Customer on February 1 2018 | Verified Purchase

The AOR Peak K2 I received has sodium stearyl fumarate in it, a synthetic ingredient, which is different than what was in the description and picture on the website, which showed only cellulose and hypromellulose that are know to be safe . I never would have made this purchase if it had been accurately described as having the sodium stearyl fumarate ingredient. I thought it would be OK, because I took the dose of K2 MK-4 before without sodium stearyl fumarate. I found this K2 MK-4 with sodium stearyl fumarate made made me feel sedated, unlike the K2-MK4 that had no strange effect without the added ingredient. I did research and found that studies on rats and dogs found that sodium stearyl fumarate is found to be absorbed into the body. I could not find any long term studies done on it.

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Suppose to help with bone health.

Posted by iHerb Customer on October 22 2017 | Verified Purchase

I was given this supplement to take with other supplements. Suppose to be good for bone health. Easy to take and no side effects!

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Almost instant result

Posted by iHerb Customer on October 18 2017 | Verified Purchase

After the second day the plaque on teeth will minimise, leaving them nice and smooth. There has been extensive research on k2 involving removing plaque from arteries. It all makes sense to me and when it come to health I like to use common sense and logic. Do combine it with D3 and vitamin A or fish oil for optimal effect. The price is also very good for the amount of k2 you get.

Thanks for your feedback!