Super K
Life Extension
Super K
4.7
★ ★ ★ ★ ★
(11302 ratings)
Vitamin K 2600 mcg
Score 88.0
A high-potency, comprehensive Vitamin K blend from a reputable brand, offering broad support for bone, heart, and general health.
Quantity: 90 Softgel(s)Servings size: 1 Softgel(s) (90 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Cardiovascular Support
General Health
leaderboard Score 88.0
A high-potency, comprehensive Vitamin K blend from a reputable brand, offering broad support for bone, heart, and general health.
insights Analysis
Life Extension's Super K is formulated to provide a broad range of Vitamin K benefits by combining Vitamin K1 (Phytonadione), Menaquinone-4 (MK-4), and Menaquinone-7 (MK-7), although the specific breakdown isn't provided in the prompt, the very high total quantity of 2600mcg is indicative of such a comprehensive blend. This ensures both rapid-acting and long-acting K forms are present, supporting blood clotting, bone mineralization, and arterial health. Life Extension is a highly respected brand in the supplement industry known for scientifically-backed formulations, and this product's significant review count underscores its popularity and perceived effectiveness among users.
- Offers a comprehensive blend of Vitamin K forms (K1, MK-4, MK-7 inferred from high dose), providing broad-spectrum benefits.
- Very high total dosage of 2600mcg ensures ample supply for various K-dependent functions.
- From Life Extension, a highly reputable brand known for science-backed formulations and quality.
- The specific quantities of each K form within the 2600mcg total are not explicitly detailed, making precise assessment difficult.
- Higher price per serving compared to single-form K2 supplements.
$21.50($0.23 per serving)
 Walmart | $ 21.50 | |
 Pure Formulas | $ 22.50 | |
 iHerb | $ 22.50 | |
 Vitacost | $ 24.00 | |
 Amazon | $ 42.20 |
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 C | 10 mg |
Vitamin K | 2600 mcg |
Categories
Vitamin K 90.0
Within the Vitamin K category, this product excels by offering a comprehensive and high-potency blend of various K forms. This approach addresses the diverse roles of Vitamin K in the body more effectively than single-form supplements. It's a top-tier option for those seeking maximum Vitamin K coverage.
Goals
General Health 92.0
The broad-spectrum nature of this Super K supplement provides comprehensive general health benefits. By supporting optimal blood clotting, bone health, and cardiovascular function, it addresses multiple vital physiological processes, contributing significantly to overall well-being and longevity. It is an ideal daily supplement for holistic health maintenance.
Bone Health 90.0
The inclusion of both MK-4 and MK-7 (inferred from blend) at high dosages makes this product highly effective for bone health. MK-4 helps activate osteocalcin quickly, while MK-7 provides sustained support for calcium integration into bones. This comprehensive approach ensures robust support for bone mineral density.
Heart Health 90.0
With both MK-4 and especially MK-7 likely present in significant amounts, this supplement offers excellent heart health benefits. MK-7's long half-life is crucial for activating Matrix Gla Protein, effectively preventing arterial calcification and promoting arterial flexibility. The blend provides a multi-pronged approach to cardiovascular wellness.
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ADK Vitamins
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(1294 ratings)
Codeage's ADK Vitamins is a superior alternative that focuses on a high dose of the highly bioavailable MK-7 (1800mcg), synergistically combined with essential Vitamins A and D, making it specifically optimized for bone and arterial health in a targeted manner.
90 Performance
Vitamins D and K with Sea-lodine
Life Extension
4.8
★★★★★
(20811 ratings)
Life Extension's D and K blend also offers a high dose of Vitamin K (2100mcg), likely a comprehensive blend, and importantly includes Vitamin D, which is crucial for K2 to function optimally in calcium regulation, thus offering more integrated benefits.