Liquid EnDuro D (Vitamin D3 + K2)
High-potency D3 + K2 in a great-tasting liquid for people who want immune support, strong bones, and smart calcium utilization—without swallowing capsules.
Best for:
- Adults with low sun exposure / winter months
- People who want high-dose D3 (5,000 IU) in a simple daily routine
- Anyone taking calcium who wants K2 to help direct calcium where it belongs
Key benefits
- High-potency Vitamin D3 (5,000 IU) + K2 (MK-7)
- Immune “front line” support
- Bone + structural support
- Helps calcium go to bones—not soft tissue (D3 works best with K2)
Why this formula
- Uses Vitamin D3 (cholecalciferol) — the form shown to raise vitamin D levels more effectively than D2
- Includes Vitamin K2 as MK-7 — widely regarded as a highly bioavailable subtype
HOW TO USE:
Take 1 dropper (1 mL) daily
Or as directed.
- Liquid EnDuro D – best if you:
- don’t like capsules
- want 5,000 IU per serving
- want an easy daily dropper
- EnDuro D Softgels – best if you:
- prefer capsules/softgels
- want a simpler travel-friendly format
FAQ’S:
Why Vitamin D3 instead of D2?
- D2 (ergocalciferol) = plant-derived
- D3 (cholecalciferol) = sun/lanolin-derived and commonly chosen because it raises active vitamin D levels more effectively than D2.
Quality and testing
Third-party tested
Yes—every Hammer Nutrition supplement is 3rd party tested and manufactured to comply with FDA dietary supplement GMP regulations (21 CFR Part 111). Raw materials and finished products are tested through multiple production stages before release.
Want to maximize Vitamin D results?
Magnesium helps activate enzymes involved in vitamin D metabolism.
If customers don’t get enough magnesium, they may not get the full value from D3.
Suggested add-on: Essential Mg (100 mg per capsule from multiple bioavailable forms)
Why does the label show mcg instead of IU?
The FDA required labels to use metric units. The dosage hasn’t changed.
Vitamin D conversion:
1 IU = 0.025 mcg
Example: 2,000 IU = 50 mcg
USES:
Support goals
- Immune system support
- Bone health
- Cardiovascular support
- Calcium utilization support
DISCLAIMER:
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.