NOW Foods MK-7 Plus with K1 & MK-4: A Comprehensive Vitamin K Supplement

• January 05, 2025
• Bone HealthCardiovascular HealthDietary Supplements

Name and Basic Overview

NOW Foods MK-7 Plus with K1 & MK-4 is a dietary supplement designed to support bone and cardiovascular health. It contains two forms of Vitamin K2 (MK-4 and MK-7) and Vitamin K1.

Vitamin K is naturally found in green leafy vegetables, fermented foods, and animal products, but this supplement provides a concentrated, vegetarian/vegan-friendly source.

People often seek this supplement for its potential benefits in bone health and cardiovascular support.

Historical Background / Traditional Use

Vitamin K was first discovered in the early 20th century and has been recognized for its essential role in blood coagulation.

Historically, Vitamin K1 has been associated with leafy greens, while Vitamin K2, particularly MK-7, is found in fermented foods like natto, a traditional Japanese dish.

Modern usage focuses on its role in bone mineralization and cardiovascular health, expanding beyond its traditional association with blood clotting.

Composition and Active Components

The supplement contains Vitamin K1 (Phytonadione) and two forms of Vitamin K2: MK-4 (Menaquinone-4) and MK-7 (Menaquinone-7, branded as MenaQ7®).

Vitamin K1 is primarily involved in blood clotting, while Vitamin K2 is crucial for directing calcium to the bones and away from the arteries, potentially reducing arterial calcification.

Alfalfa powder is included, which is a natural source of various nutrients, though its specific role in this formulation is not highlighted.

Research and Evidence Base

Clinical studies have shown that Vitamin K2, particularly MK-7, may improve bone mineral density and reduce the risk of fractures, especially in postmenopausal women.

Research also suggests that Vitamin K2 can support cardiovascular health by preventing arterial calcification, though more studies are needed to confirm these effects.

The evidence for Vitamin K1's role in bone health is less robust compared to K2, but it remains essential for coagulation.

Overall, the evidence supporting the use of Vitamin K2 for bone and cardiovascular health is promising but still developing, with ongoing research needed to fully understand its benefits and mechanisms.

Potential Health Benefits

• Supports Bone Health: Vitamin K is essential for the synthesis of proteins that bind calcium, which is crucial for maintaining bone density and reducing the risk of fractures. The inclusion of both MK-4 and MK-7 forms of Vitamin K2 may enhance these benefits, as they are known to support bone mineralization.
• Cardiovascular Support: Vitamin K2, particularly in the form of MK-7, has been associated with cardiovascular health by helping to prevent arterial calcification, which can lead to improved heart health.
• Comprehensive Vitamin K Formula: This supplement provides a complete range of Vitamin K forms, including K1, MK-4, and MK-7, which may offer a broader spectrum of benefits compared to supplements containing only one form.

Safety, Side Effects, and Precautions

• Gastrointestinal Upset: Some individuals may experience mild gastrointestinal discomfort when taking vitamin supplements.
• Allergic Reactions: Although rare, some people may have allergic reactions to components in the supplement, such as alfalfa powder.
• Interactions with Medications: Vitamin K can interfere with anticoagulant medications like warfarin, so individuals on such medications should consult their healthcare provider before use.
• Specific Populations: Pregnant or breastfeeding women, children, and those with specific health conditions should seek medical advice before starting this supplement.

Summary and Takeaway

Main Benefits: Supports bone health and cardiovascular function with a comprehensive blend of Vitamin K forms.

Caveats: Potential interactions with blood-thinning medications and possible mild gastrointestinal side effects.

Potential Risks: Allergic reactions and interactions with certain medications.

Worth Trying? This supplement may be beneficial for individuals looking to support bone and cardiovascular health, particularly those who may not get enough Vitamin K from their diet.

Rating Among Similar Supplements: 8/10. This product offers a well-rounded formula with multiple forms of Vitamin K, which is a significant advantage.

Rating Based on Research: 7/10. While the benefits of Vitamin K for bone and cardiovascular health are well-documented, more research is needed to fully understand the distinct roles of different forms of Vitamin K.

This supplement is a solid choice for those seeking to enhance their Vitamin K intake, but as always, it's important to consult with a healthcare provider to ensure it's appropriate for your individual health needs.