Vitamin K2 100 mcg
SR Sports Research
Vitamin K2 100 mcg
4.8
★ ★ ★ ★ ★
(2981 ratings)
Vitamin K 100 mcg
Score 92.0
A high-quality, pure MK-7 Vitamin K2 supplement offering effective dosage and great value for bone and heart health.
Quantity: 60 Softgel(s)Servings size: 1 Liquid Veggie Softgel (60 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Cardiovascular Support
General Health
leaderboard Score 92.0
A high-quality, pure MK-7 Vitamin K2 supplement offering effective dosage and great value for bone and heart health.
insights Analysis
SR Sports Research Vitamin K2 contains 100 mcg of Menaquinone-7 (MK-7), the highly bioavailable form of Vitamin K2 known for its extended half-life and efficacy in activating K2-dependent proteins. The brand generally has a good reputation for quality supplements. At 31 cents per serving, it offers very good value for a pure MK-7 product, making it accessible for many consumers. With 2831 reviews, it demonstrates good popularity and user satisfaction, indicating its effectiveness and acceptance in the market. It's a straightforward, effective option for targeted K2 supplementation.
- Provides 100 mcg of Menaquinone-7 (MK-7), the most effective and bioavailable form of Vitamin K2, ensuring optimal absorption and sustained activity in the body.
- Offers a very competitive price per serving for a premium MK-7 product, making high-quality K2 supplementation more affordable for daily use.
- Supported by a significant number of positive online reviews, indicating broad user satisfaction and confidence in the product's effectiveness and quality.
- This product is a standalone Vitamin K2 supplement and does not include Vitamin D3, which is often recommended to be taken with K2 for synergistic benefits in calcium metabolism.
- As a capsule form, it may not be preferred by individuals who have difficulty swallowing pills, potentially limiting its convenience for some users compared to other delivery methods.
$18.97($0.31 per serving)
 iHerb | $ 18.97 |
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 96.0
This product is an excellent representation of a high-quality Vitamin K supplement, featuring 100mcg of the superior Menaquinone-7 (MK-7) form. It offers a potent and highly bioavailable option for fulfilling Vitamin K requirements.
Goals
Bone Health 95.0
With 100 mcg of MK-7, this product strongly supports bone health by activating osteocalcin, a protein crucial for integrating calcium into the bone matrix. This promotes healthy bone mineralization and contributes to overall bone strength and density.
Heart Health 95.0
The MK-7 in this supplement is highly effective for heart health by activating matrix Gla protein (MGP), which actively prevents calcium from depositing in arterial walls. This mechanism is vital for maintaining arterial elasticity and plays a significant role in reducing cardiovascular risk factors.
By preventing the calcification of soft tissues and arteries, this Vitamin K2 supplement provides robust cardiovascular support. It helps ensure that calcium is utilized properly by the body, supporting the integrity and function of the circulatory system for overall vascular health.
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