Why is there so much silicone dioxide in each capsule? I would not expect this from Thorne.

The amount of silicon dioxide in Thorne’s 3-K Complete is less than 2 percent of the total formula and does not affect the quality, efficacy, or safety of the finished product. Silicon dioxide is used to minimize moisture content and to help powders flow into capsules. Although silicon is sometimes confused with silicone (which is a synthetic compound), there is no chemical similarity between these two substances. Silicon dioxide is a naturally-occurring compound that contains silicon, a mineral that is ubiquitous in nature and found in many foods, especially those high in fiber, and, because it is necessary for bone growth and maturation, it is also often added to nutritional supplements designed for bone support.

How much Vitamin E is in this?

Thorne’s 3-K Complete contains 350 mcg of vitamin E, as mixed tocopherols, per capsule.

what is the source of the K-2?

The vitamin K (K1 and K2) in Thorne's 3-K Complete is from natural source geraniol, a monoterpenoid and an alcohol derived from rose oil, palmarosa oil, and citronella oil.

What is the vitamin a from? is it a natural source or synthetic? i see it is not soy. sunflower oil?

Thorne’s Vitamin K (formerly 3-K Complete) contains vitamin K1 and K2 (MK-4 and MK-7). The vitamin K1 and K2 (MK-7) are synthetic, vitamin K2 (MK-4) is derived from geraniol.

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Description

🦴 Elevate your wellness game with the ultimate bone & heart support!

ARTERY ARMOR - Helps maintain healthy, flexible arteries for long-term cardiovascular wellness*
BONE BOOSTING DUO - Vitamins K1 and K2 (MK-4 & MK-7) synergize to fortify your skeletal system*
TRUSTED BY EXPERTS - Backed by science and trusted by healthcare pros, elite athletes, and global institutions
CLEAN PURE FORMULA - Crafted without gluten, GMOs, artificial preservatives, or common allergens—because your health deserves the best
VITAMIN DS BEST FRIEND - Balances and enhances the effects of Vitamin D for optimal nutrient synergy*

THORNE Vitamin K combines potent forms of Vitamins K1 and K2 (MK-4 and MK-7) to support strong bones and maintain arterial elasticity. Formulated with pure, allergen-free ingredients and free from GMOs and artificial additives, this supplement is trusted by healthcare professionals and elite athletes alike to enhance overall cardiovascular and skeletal health.

Reviews

S**A

my second time purchasing THORNE’s Vitamin K, and I’m really happy with the quality

This is my second time purchasing THORNE’s Vitamin K, and I’m really happy with the quality. I trust Thorne as a brand, and this supplement feels like it’s making a difference in my overall health. The capsules are easy to take, and I like that the formula includes a balanced mix of K1 and K2. Definitely sticking with this one!

12.09.2025

L**E

High quality product definitely recommend!

Why did you pick this product vs others?:I've been using Thorne K Vitamin alongside my Vitamin D supplement, and I couldn't be happier with the results. The quality of this product is top-notch, which is exactly what I expect from Thorne. It’s been a great addition to my daily routine, and I really appreciate that it complements my Vitamin D to maximize absorption and effectiveness.I’ve noticed a positive difference in my overall health since incorporating it, and I feel more energized. If you're looking for a reliable Vitamin K supplement, I definitely recommend giving Thorne a try. You can trust the quality and feel confident in your purchase!

25.06.2025

K**S

Great product

My Vitamin K levels wouldn’t budge until I tried this brand. I’m finally back in normal range. Easy to swallow

15.09.2025

M**G

Great vitamins

Quick delivery. Best vitamins

10.09.2025

A**R

Excellent Vitamin K supplement

A tad pricey, but made in in a US GMP facility and lot tested. It seems to be more effective that other VitK supplements that I've used in the past. I recommend it. Rated 4 stars because of pricing.US GMP manufacturing with lot analysis QA.

11.07.2025

D**E

Vitamin K1 & K2

I have taken this for years. It’s easy to swallow. Buying it on Amazon is easy to find and inexpensive for this vitamin.

13.08.2025

T**S

Quality!

Quality Product. Thorne is a dendable company.

1.09.2025

C**C

For bone health

I got this for my bone health. I take it along with my cal/mag, boron. and d-3. I have no way of knowing if it's helping, but I feel that at least it's proactive, and worth adding to my other supplements.

12.09.2025

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