Vitamin K2 100 mcg
Natural Factors
Vitamin K2 100 mcg
4.8
★ ★ ★ ★ ★
(8332 ratings)
Vitamin K 100 mcg
Score 75.0
This Vitamin K2 supplement offers an optimal 100mcg dose of highly bioavailable MK-7 from Natto, providing effective support for bone and cardiovascular health. It's a cost-effective pure K2 option with strong consumer reviews. However, it lacks the synergistic Vitamin D3 for comprehensive calcium management.
Quantity: 60 Capsule(s)Servings size: 1 Capsule(s) (60 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Cardiovascular Support
General Health
leaderboard Score 75.0
This Vitamin K2 supplement offers an optimal 100mcg dose of highly bioavailable MK-7 from Natto, providing effective support for bone and cardiovascular health. It's a cost-effective pure K2 option with strong consumer reviews. However, it lacks the synergistic Vitamin D3 for comprehensive calcium management.
insights Analysis
Natural Factors Vitamin K2 100 mcg is a well-regarded supplement, evident from its high review count. The use of K2 in the Menaquinone-7 (MK-7) form, specifically from Natto, is highly desirable as MK-7 has a longer half-life and superior bioavailability compared to other forms like MK-4 or K1, allowing for consistent blood levels and efficient utilization in the body. The 100mcg dosage is considered effective for general bone and cardiovascular maintenance. While a solid choice for K2 alone, its utility for bone and heart health goals is enhanced significantly when paired with Vitamin D3, which this product does not include.
- Contains Vitamin K2 in the highly bioavailable Menaquinone-7 (MK-7) form, derived from Natto.
- Provides an optimal 100mcg dosage for daily maintenance and targeted health goals.
- Offers a good price per serving, providing solid value for a quality MK-7 product.
- High review count suggests strong consumer satisfaction and product reliability.
- Does not include Vitamin D3, missing the synergistic benefits for bone and cardiovascular health.
- As a standalone K2 product, it requires users to source Vitamin D3 separately for comprehensive benefits.
$11.90($0.19 per serving)
 iHerb | $ 11.90 |
bolt Effectiveness for goals
Vitamin K is essential for proper blood clotting and plays a significant role in bone metabolism. It helps the body produce proteins necessary for these vital bodily functions.
Vitamin K activates proteins such as osteocalcin, which are crucial for incorporating calcium into the bone matrix. This mechanism supports bone mineralization and helps maintain bone density.
Vitamin K1 (phylloquinone) is primarily effective for blood coagulation and is abundant in green leafy vegetables. Vitamin K2 (menaquinones) is more involved in bone and cardiovascular health, found in fermented foods and animal products, and has different bioavailabilities.
Emerging research suggests that Vitamin K, particularly K2, may help prevent arterial calcification by activating matrix Gla protein. This protein helps inhibit calcium deposition in soft tissues, supporting arterial flexibility.
Vitamin K works synergistically with calcium by helping to direct calcium to the bones and away from soft tissues like arteries. It activates proteins like osteocalcin for bone binding and matrix Gla protein to inhibit soft tissue calcification.
schedule Dosage, timing & forms
Recommended dosages for Vitamin K vary by age and form (K1 vs K2). For adults, the Adequate Intake (AI) for Vitamin K is 120 mcg per day for men and 90 mcg per day for women. Specific supplemental dosages may differ depending on individual needs and health goals.
Yes, dosages can differ between Vitamin K1 and K2 due to their varying potencies and half-lives. While K1 is measured in micrograms (mcg) for general intake, K2 (especially MK-7) may be effective at lower microgram doses due to its longer half-life. It's important to check the specific form and dosage on the supplement label.
Yes, Vitamin K is a fat-soluble vitamin, meaning it is best absorbed when taken with a meal containing some dietary fat. This helps facilitate its absorption into the body.
The two main forms of Vitamin K found in supplements are Vitamin K1 (phylloquinone) and Vitamin K2 (menaquinone). Vitamin K2 further has various subtypes, with MK-4 and MK-7 being the most common in supplements. Each form may have distinct roles and bioavailability.
There is no established Upper Limit (UL) for Vitamin K from food or supplements, as toxicity is rare. However, high doses of synthetic Vitamin K (menadione, K3) can be toxic, though this form is not typically found in supplements. Always adhere to recommended dosages and consult a healthcare provider if you have concerns.
health_and_safety Safety & interactions
Vitamin K plays a crucial role in blood clotting, which is the opposite effect of anticoagulant medications such as warfarin. Consuming inconsistent amounts of Vitamin K can alter warfarin's effectiveness, potentially making the blood thinner less effective or increasing bleeding risk. Individuals taking warfarin should maintain a consistent intake of Vitamin K and consult their healthcare provider.
Individuals taking anticoagulant medications like warfarin should consult their doctor before taking Vitamin K supplements due to potential interactions. People with certain liver conditions or those with a G6PD deficiency should also seek medical advice before supplementation. Always discuss new supplements with a healthcare provider.
Vitamin K supplements are generally considered safe for most healthy individuals when taken at recommended dosages. Side effects are uncommon but can include upset stomach, diarrhea, or allergic reactions in sensitive individuals. High doses of synthetic Vitamin K (menadione, K3) can be toxic, but this form is rarely used in supplements.
Vitamin K is essential during pregnancy and breastfeeding, and adequate intake is important for both mother and child. However, supplementation during these periods should only be undertaken under the guidance of a healthcare professional. High doses are generally not recommended without specific medical advice.
There is currently no established Tolerable Upper Intake Level (UL) for Vitamin K from food or supplements due to its low potential for toxicity. However, excessive intake, especially of synthetic forms, could potentially have adverse effects. It is always best to adhere to recommended dosages on supplement labels or as advised by a healthcare professional.
Ingredients
| Ingredient | Amount per serving |
|---|---|
Vitamin K2 | 100 mcg |
Categories
Vitamin K 85.0
This product scores highly within the Vitamin K collection due to its optimal dose of the superior MK-7 form of K2, which is widely recognized for its efficacy and bioavailability compared to other Vitamin K forms. It's a high-quality standalone K2 supplement.
Goals
Bone Health 80.0
Vitamin K2 is essential for activating osteocalcin, a protein that integrates calcium into bone matrix. The MK-7 form at 100mcg is effective for directing calcium to bones, thus supporting bone density and strength. However, the absence of Vitamin D3, which aids calcium absorption, means it's not a complete solution for optimal bone health alone.
Heart Health 78.0
K2 helps activate MGP (Matrix Gla Protein), which prevents calcium from depositing in arteries, thereby supporting arterial flexibility and heart health. The MK-7 form is particularly effective for systemic cardiovascular benefits. While effective, the lack of D3 limits its full potential as D3 also plays a role in cardiovascular function.
The 100mcg of MK-7 is a beneficial dose for activating proteins that prevent arterial calcification, a key factor in maintaining healthy arteries and supporting overall cardiovascular system function. Its effectiveness is well-supported by research in this area, though synergistic nutrients like Vitamin D3 would further enhance its supportive role.
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