Vitamin K2+D3
Source Naturals
Vitamin K2+D3
4.8
★ ★ ★ ★ ★
(1114 ratings)
Vitamin K 100 mcg
Score 93.0
A highly effective and well-priced combination of Vitamin K2 (MK-7) and Vitamin D3, offering synergistic benefits for bone and cardiovascular health.
Quantity: 60 Tablet(s)Servings size: 1 Tablet(s) (60 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Cardiovascular Support
General Health
leaderboard Score 93.0
A highly effective and well-priced combination of Vitamin K2 (MK-7) and Vitamin D3, offering synergistic benefits for bone and cardiovascular health.
insights Analysis
Source Naturals Vitamin K2+D3 is a well-formulated supplement that provides 100mcg of Menaquinone-7 (MK-7) along with an unspecified amount of Vitamin D3. This combination is highly praised by nutritionists and scientific research for its crucial synergistic roles in directing calcium properly within the body. Vitamin D3 facilitates calcium absorption, while MK-7 ensures that this absorbed calcium is deposited into bones and kept out of arteries, thereby supporting both bone density and arterial flexibility. Priced at a competitive $0.19 per serving, it offers excellent value for a combined supplement. The product's review count (1072) indicates a positive market reception.
- Offers the highly bioavailable Menaquinone-7 (MK-7) form of Vitamin K2.
- Crucially includes Vitamin D3, providing synergistic benefits for bone and heart health, often recommended by health professionals.
- Very competitive price per serving ($0.19) for a combined K2+D3 supplement.
- Manufactured by Source Naturals, a reputable brand.
- The exact dosage of Vitamin D3 is not specified in the provided data, which is an important factor for some consumers.
- Review count is good but not as extensive as some market-leading standalone K2 products, potentially indicating less market dominance.
$11.63($0.19 per serving)
 iHerb | $ 11.63 | |
 Vitacost | $ 11.89 |
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 D3 | 10 mcg |
Vitamin K-2 | 100 mcg |
Calcium | 110 mg |
Categories
Vitamin K 93.0
As a combined K2+D3 supplement, it represents a highly effective and excellent value option within the Vitamin K category, addressing both K and D needs simultaneously for superior health outcomes.
Goals
Bone Health 95.0
The synergistic combination of MK-7 and Vitamin D3 is paramount for directing calcium to bones and optimizing bone mineralization, making it highly effective for skeletal health.
Heart Health 95.0
D3 supports general cardiovascular function, while MK-7 actively prevents arterial calcification, providing a powerful dual-action approach to maintaining arterial flexibility and heart health.
By ensuring proper calcium utilization and preventing its harmful deposition in soft tissues, this K2+D3 blend offers comprehensive and proactive support for arterial elasticity and overall circulatory system health.
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