Vitamin D3: Bone, Immune & Hormonal Support

Form: Cholecalciferol (Vitamin D₃)
Amount: 25 mcg / 1,000 IU (125% Daily Value)

 

Vitamin D₃ is essential for bone strength, immune function, and hormonal balance - influencing everything from calcium absorption to immune resilience and mood regulation.

At YES, we use the exact form your body naturally recognizes, delivered at a dose designed for modern life.

Supports Bone Strength & Calcium Absorption

Vitamin D₃ helps your body absorb calcium efficiently — working synergistically with vitamin K₂ to ensure calcium strengthens bones rather than accumulating where it doesn’t belong.

Supports Immune Function

Vitamin D₃ plays a key role in immune signaling, helping the body maintain a healthy, balanced immune response.

Supports Hormonal & Metabolic Balance

Often referred to as a “pro-hormone,” vitamin D₃ influences many systems in the body, including energy regulation, mood, and overall metabolic health.

 

Why We Chose D₃ (Not D₂)

There are two primary forms of vitamin D found in supplements:

  • Vitamin D₂ (ergocalciferol) - commonly used, inexpensive, and poorly converted in the body

  • Vitamin D₃ (cholecalciferol) - the same form your skin naturally produces from sunlight

Vitamin D₃ is up to 3× more effective at raising and maintaining healthy blood levels than D₂.

That’s why YES uses cholecalciferol - the biologically active form your body actually knows how to use.

 

Why This Dose Matters

At 125% DV (1,000 IU), this dose provides a strong daily foundation - especially for those who spend most of their time indoors, travel frequently, or live in low-sun environments.

It supports optimal vitamin D status without pushing blood levels excessively high, making it ideal for consistent daily use.

Balanced. Effective. Intentional.

 

Vegan & Non-GMO

Most vitamin D₃ supplements are derived from lanolin (sheep’s wool) - not vegan.

YES uses vegan-certified vitamin D₃ sourced from non-GMO lichen, a sustainable, plant-based organism that naturally produces cholecalciferol identical to what your skin makes from sunlight.

Clean source. True D₃. Fully aligned with YES standards.

 

A foundational vitamin that supports bones, immunity, and balance - delivered in the form your body was designed to recognize.