What is Life Extension Vitamins D and K?
Life Extension Vitamins D and K is a premium supplement that combines Vitamin D3 (cholecalciferol) and Vitamin K2 (menaquinone-7) to support bone strength, arterial health, and immune system function. This synergistic blend helps your body absorb calcium effectively while ensuring it’s directed to bones — not arteries.
Produced by Life Extension, a science-backed supplement brand with 40+ years of experience, this product offers a high-potency formula designed for daily health optimization.
📦 Product Overview
| Feature | Details |
| Product Name | Life Extension Vitamins D and K |
| Main Ingredients | Vitamin D3 (25 mcg), Vitamin K2 (100 mcg) |
| Form | Softgels |
| Capsules per Bottle | 60 softgels (2-month supply) |
| Certifications | Non-GMO, Gluten-Free, GMP Certified |
| Manufactured In | USA |
| Best For | Bone density, arterial health, immunity |
🧪 Ingredient Breakdown
| Ingredient | Amount per Softgel | Function |
| Vitamin D3 (as cholecalciferol) | 25 mcg (1,000 IU) | Enhances calcium absorption and immune support |
| Vitamin K2 (as MK-7) | 100 mcg | Activates proteins for proper calcium distribution |
| Extra Virgin Olive Oil | — | Enhances fat-soluble vitamin absorption |
| Softgel Capsule (gelatin, glycerin, purified water) | — | Encapsulates active ingredients for better bioavailability |
✅ Free from GMOs, gluten, artificial preservatives, and dairy.
💊 How to Use Life Extension Vitamins D and K
Suggested Use
- Take 1 softgel daily with a meal (preferably one containing healthy fat)
- Morning or lunch is ideal for vitamin D3 absorption
- For those with diagnosed deficiencies, consult a physician for tailored dosage
Absorption Tip
Fat-soluble vitamins like D3 and K2 are best absorbed with dietary fat such as avocado, olive oil, or nuts.
⚠️ Side Effects of Vitamins D and K
Both vitamins are generally safe when taken as directed. However, imbalanced intake or high doses without supervision may lead to side effects.
Mild Side Effects (Uncommon)
- Upset stomach
- Headache
- Fatigue (if overdosed on D3)
- Minor nausea if taken on an empty stomach
🧠 Individuals on blood thinners (e.g., warfarin) should consult a doctor before using Vitamin K2 supplements due to its effect on clotting factors.
🚫 Overdose Effects and Risk
Excess Vitamin D3 (>4,000 IU/day) may cause hypercalcemia — leading to:
- Nausea and vomiting
- Kidney stones
- Muscle weakness
- Excess thirst or urination
Vitamin K2, even in higher doses, has no known toxicity, but excessive intake may interfere with anticoagulants.
FAQs
Why take Vitamin D with Vitamin K?
Vitamin D increases calcium absorption, and Vitamin K2 ensures calcium is directed to bones and not arteries, reducing the risk of calcification.
Is this supplement vegan?
No. The softgel contains gelatin, which is not vegan, but it is vegetarian-friendly.
How long before I see results?
Blood levels of vitamin D typically improve within 2–4 weeks. Bone and cardiovascular benefits may take 2–3 months of consistent use.
Can I take this with calcium?
Yes. Combining with calcium and magnesium may further support bone health, but ensure balanced intake and consult your doctor.
Is this safe during pregnancy?
Consult a physician. While Vitamin D and K are important in pregnancy, dosages must be tailored to individual needs and medical history.
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