A-D-K Essential Vitamins
Terra Origin
A-D-K Essential Vitamins
4.8
★ ★ ★ ★ ★
(467 ratings)
Vitamin K 1000 mcg
Score 72.0
A well-dosed Vitamin D and A supplement that also contains a significant amount of Vitamin K, but the specific form of Vitamin K is not disclosed, limiting its assessment for targeted bone and cardiovascular benefits.
Quantity: 60 Capsule(s)Servings size: 1 Liquid Capsule(s) (60 servings)
Selected goals:
Other goals:
Bone Health
Heart Health
Cardiovascular Support
General Health
leaderboard Score 72.0
A well-dosed Vitamin D and A supplement that also contains a significant amount of Vitamin K, but the specific form of Vitamin K is not disclosed, limiting its assessment for targeted bone and cardiovascular benefits.
insights Analysis
Terra Origin's A-D-K Essential Vitamins provides a potent dose of Vitamin D3 (5000 IU), which is highly beneficial for calcium absorption and immune function. The inclusion of Vitamin A (Retinyl Palmitate, 5000 IU) also supports bone growth and immune health. The product claims 1000 mcg of Vitamin K, but critically, it does not specify whether this is K1 (phylloquinone) or K2 (menaquinone) or a blend of both. For bone and cardiovascular health, Vitamin K2 (especially MK-7) is paramount. Without this clarity, the efficacy for the stated goals, particularly 'Bone Health' and 'Cardiovascular Support,' is questionable, as K1 has a much less direct role in directing calcium. Nutritionists often emphasize K2 for these specific benefits. While online reviews are generally positive, they don't clarify the K form, leaving a crucial gap in understanding its full potential.
- Contains a potent dose of Vitamin D3 (5000 IU), crucial for calcium absorption and immune support.
- Includes Vitamin A, which supports bone health and immune function.
- Offers a synergistic combination of fat-soluble vitamins.
- The specific form of Vitamin K (K1, MK-4, or MK-7) is not specified, which is a significant drawback for assessing its effectiveness for bone and cardiovascular health.
- The high dose of Vitamin A may be a concern for some if combined with other Vitamin A sources, although generally safe at this level.
- Higher price per serving compared to single-nutrient supplements.
- The high dose of Vitamin D3 (5000 IU) may not be suitable for all individuals and should be discussed with a healthcare professional, especially if existing D levels are not known.
- If the unspecified Vitamin K is largely K1, individuals on blood thinners should exercise caution and consult a doctor.
$39.99($0.66 per serving)
 iHerb | $ 39.99 |
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 A | 1500 mcg |
Vitamin D | 125 mcg |
Vitamin K | 1000 mcg |
Categories
Vitamin K 65.0
While a substantial amount of Vitamin K is present, the lack of transparency regarding its specific form (K1, MK-4, or MK-7) significantly reduces its score within the Vitamin K collection, as K2 is more highly valued for the common goals.
Goals
Bone Health 75.0
The strong Vitamin D3 dose synergizes with Vitamin K and A for bone health, but the ambiguity of the Vitamin K form prevents a higher score, as K2 is more impactful for directing calcium to bones.
General Health 75.0
The combination of essential fat-soluble vitamins (A, D, K) provides a good foundation for various aspects of general health, including immune function and overall well-being.
Heart Health 70.0
The D3 and K combination provides some support, but without knowing if the Vitamin K is K2, its specific contribution to preventing arterial calcification for heart health is uncertain.
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