Bone Support Strips — Vitamin D3 + K2
- D3 + K2, the bone-health duo — two nutrients that work together to support the body's natural bone maintenance and calcium use
- Supports calcium absorption — vitamin D3 helps the body absorb calcium, while K2 helps direct it toward bones and teeth
- Dissolves on your tongue — no water — a fresh raspberry strip that melts in seconds, made for travel, work, and on-the-go days
The research on the ingredients
Vitamins D3 and K2 play well-established, complementary roles in how the body uses calcium and maintains bone. The findings below describe what the peer-reviewed literature reports. Everyone responds differently, and these statements have not been evaluated by the FDA.
2013: A 3-year randomized, placebo-controlled trial in healthy postmenopausal women found that low-dose vitamin K2 (MK-7) supplementation helped decrease age-related bone loss.
Knapen et al., Osteoporosis International, 2013 — a 3-year placebo-controlled trial of low-dose menaquinone-7 (vitamin K2) in healthy postmenopausal women and its effect on bone maintenance.
Vitamin D3 and calcium: vitamin D3 plays a well-established role in helping the body absorb calcium, a foundation of normal bone maintenance.
Review literature on vitamin D3 (cholecalciferol) — describing its established role in supporting the intestinal absorption of calcium and the maintenance of normal bones and teeth.
The two work together: research describes how vitamins D and K act synergistically — D3 supports calcium absorption, while K2 helps direct calcium toward the bones.
Review literature on the synergy of vitamins D and K for bone health — describing their complementary roles in calcium absorption (D3) and calcium utilization in bone (K2), the rationale for pairing them.
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Grounded in real research.
Vitamins D3 and K2 have been studied in peer-reviewed research for their potential to support calcium absorption, calcium utilization, and the body's natural bone-maintenance processes. Earthbound's Ground Provisions are built and formulated on that science.
D3 + K2 Together
Two complementary nutrients for bone maintenance in one strip.
Calcium Absorption
Vitamin D3 supports the body's absorption of calcium.
Calcium Direction
Vitamin K2 helps guide calcium toward bones and teeth.
No Water Needed
Dissolves on your tongue in seconds, anywhere.
*Based on peer-reviewed research, results may vary
Two nutrients, one simple daily strip
Bone health is a long game, and it comes down to two things working together: getting enough calcium, and getting it to the right place. That's the logic behind pairing vitamin D3 with vitamin K2 — D3 helps your body absorb calcium from your diet, while K2 helps direct that calcium toward your bones and teeth rather than leaving it to circulate.
This strip delivers both, at 2,000 IU of D3 and 120 mcg of K2, in a form that dissolves on your tongue with no water or swallowing. It's for anyone thinking ahead about strong bones — especially women in and beyond midlife, when bone maintenance matters most — who wants a foundational daily habit that's genuinely effortless.
- Vitamin D3 and K2, the complementary bone-support duo
- D3 for calcium absorption, K2 for calcium direction
- Dissolves on your tongue — no water, anywhere
