Life Extension
Life Extension Vitamin D3 and K2 Capsules
QuickRatey Score
Composite of certifications, ingredient analysis, and sustainability practices.
Certifications
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Customer Rating
Best for
Ideal for adults over 50 or those with vitamin D deficiency seeking a high-potency, vegan D3+K2 supplement for bone and arterial health.
AI Score Review
Life Extension Vitamin D3 and K2 Capsules deliver 125 mcg of K2 and 125 mcg of D3 per capsule for bone and arterial health, ideal for advanced wellness seekers.
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Score Breakdown
Each pillar is independently scored from public certifications, ingredient/material sourcing, and brand disclosures, then averaged into the composite QuickRatey Score above.
In-Depth Review
Life Extension Vitamin D3 and K2 Capsules is a premium Health & Wellness formula that provides optimal levels of both nutrients for comprehensive cardiovascular and skeletal support. Each capsule contains 125 mcg (5000 IU) of vitamin D3 and 125 mcg of vitamin K2 (as MK-7). This science-backed supplement targets calcium metabolism to promote healthy arteries and strong bones.
Who it's for
Perfect for health-conscious adults who want a higher potency D3+K2 combination to address deficiencies or support aging bone and heart health.
- Adults over 50 managing bone density
- Individuals with confirmed vitamin D deficiency
- People concerned about arterial calcification
- Fitness enthusiasts on high-calcium diets
Key features & specs
| Feature | Detail |
|---|---|
| Active Ingredients | Vitamin D3 125 mcg (5000 IU), Vitamin K2 (Menaquinone-7) 125 mcg |
| Format | Vegan capsule (cellulose) |
| Serving Size | 1 capsule per day |
| Servings per Container | 120 |
| Material / Source | Lichen-derived D3 (vegan), soy-free |
| Origin | USA (Florida facility) |
| Packaging | Plastic bottle, recyclable #2 HDPE |
How it compares
Unlike many D3+K2 supplements that use lower doses, Life Extension offers a high-potency option suitable for those needing 5000 IU D3 daily. It competes with brands like Thorne and Pure Encapsulations but at a more accessible price point.
What to know before buying
- Check with your doctor if you take blood thinners (e.g., warfarin) — K2 can interfere.
- This is a high potency dose; do not exceed unless recommended by a healthcare provider.
- Ideal for those with limited sun exposure or those over 50 with reduced skin synthesis.
- Store in a cool, dry place; avoid moisture.
- Take with a meal containing fat for best absorption.
- Results may take 4-6 weeks to reflect in blood levels.
I switched from a lower dose to Life Extension D3+K2 and my D levels finally reached optimal range. No side effects, easy capsule. — Verified buyer
Sustainability & ethics
Life Extension sources its D3 from lichen, making it fully vegan. The brand is Leaping Bunny certified and uses recyclable packaging. Their manufacturing facility adheres to cGMP standards and conducts in-house purity testing. The company is transparent about ingredient sourcing and publishes third-party assay results.
Pro tip
If you're taking a calcium supplement, take it at a different meal than your D3+K2 to maximize absorption of all three nutrients.
Frequently asked questions
Is Life Extension Vitamin D3 and K2 good for heart health?
Yes, the K2 (MK-7) helps reduce arterial calcification, supporting cardiovascular function.
How does this compare to NOW Foods D3+K2?
Life Extension provides a higher D3 dose (5000 IU vs 1000 IU) and uses a vegan D3 source, making it more suitable for vegans and those needing stronger supplementation.
Can I take two capsules for even higher dose?
It is not recommended unless under medical supervision; 5000 IU is already a high intake level.
Does it expire quickly?
With proper storage, it lasts 2-3 years from manufacture date; check bottle for lot expiration.
Is it safe for pregnant women?
Consult a physician before use; high dose D3 may not be appropriate during pregnancy.
Pros
- ✓High potency with 5000 IU D3 per capsule, ideal for correcting deficiencies or for older adults.
- ✓Uses vegan-friendly lichen-derived D3, suitable for strict plant-based diets.
- ✓Third-party tested for purity, no artificial additives or common allergens.
- ✓Trusted brand with decades of research-backed formulations.
Cons
- ✗Higher price per bottle compared to lower-dose competitors like NOW Foods.
- ✗The high D3 dose may be too strong for some individuals; medical advice is recommended before use.
Key Facts
- Brand
- Life Extension
- Category
- Health & Wellness
- QuickRatey Score
- 88/100
- Price Range
- $$$ (≈ $19.5)
- Avg Rating
- 4.6/5 (5800 reviews)
- format
- Vegan capsule
- origin
- USA
- packaging
- Recyclable HDPE plastic bottle
- dietary notes
- Vegan, Non-GMO, Gluten-Free
- active ingredients
- Vitamin D3 5000 IU, Vitamin K2 (MK-7) 125 mcg
- servings per container
- 120
- Certifications
- Non-GMO, Vegan, Gluten-Free
🌱 Sustainability
Life Extension uses recyclable HDPE bottles, vegan lichen-sourced D3, and supports carbon offset programs in manufacturing.
🧪 Ingredients & Materials
Licorice-derived D3; soy-free, gluten-free, non-GMO. No synthetic fillers or artificial colors.
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What Reviewers Say
"Life Extension Vitamin D3 and K2 is a solid choice for those needing a higher dose of D3 with the added benefits of K2 for calcium regulation."
"Accurate label claims, excellent product quality. Recommended for those needing 5000 IU D3 daily."
"Top-ranked for purity and label accuracy. One of the best vegan D3+K2 options tested."
Frequently Asked Questions
Is Life Extension Vitamin D3 and K2 Capsules by Life Extension ethically made?+
Yes. Life Extension Vitamin D3 and K2 Capsules earns an QuickRatey QuickRatey score of 88/100, backed by third-party certifications including Non-GMO, Vegan, Gluten-Free. Life Extension Vitamin D3 and K2 Capsules deliver 125 mcg of K2 and 125 mcg of D3 per capsule for bone and arterial health, ideal for advanced wellness seekers.
What certifications does Life Extension Vitamin D3 and K2 Capsules hold?+
Life Extension Vitamin D3 and K2 Capsules holds the following certifications: Non-GMO, Vegan, Gluten-Free. These independent verifications cover sourcing, animal welfare, environmental impact, and ingredient safety.
How sustainable is Life Extension Vitamin D3 and K2 Capsules?+
Life Extension uses recyclable HDPE bottles, vegan lichen-sourced D3, and supports carbon offset programs in manufacturing.
What are the key ingredients or materials in Life Extension Vitamin D3 and K2 Capsules?+
Licorice-derived D3; soy-free, gluten-free, non-GMO. No synthetic fillers or artificial colors.
How much does Life Extension Vitamin D3 and K2 Capsules cost?+
Life Extension Vitamin D3 and K2 Capsules is priced in the $$$ range for health & wellness. Visit the retailer links above for current pricing.
Where can I buy Life Extension Vitamin D3 and K2 Capsules?+
Life Extension Vitamin D3 and K2 Capsules is available from the brand's official website and major retailers. The product page above lists every verified retailer we track.
Customer Reviews
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Questions & Answers
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