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Vitamin D3 vs D2: Why D3 Is the Better Supplement Form

By The SodaPeak Team · September 2026

Not all Vitamin D supplements are the same. D2 (ergocalciferol) and D3 (cholecalciferol) are different molecules with different efficacy. SodaPeak uses D3. Here is why.

D3 is what your body makes

When sunlight hits your skin, it produces D3, not D2. D3 is the natural human form. D2 comes from plant and fungal sources. Your body recognizes and processes D3 more efficiently.

Research comparison

Studies consistently show that D3 is 87% more effective than D2 at raising and maintaining serum 25-hydroxyvitamin D levels. D3 also has a longer half-life in the bloodstream, providing more sustained benefit from each dose.

Why D3 in our formula

Men over 30 increasingly need supplemental Vitamin D for immune function, testosterone maintenance and bone health. We chose the most bioavailable form to maximize the benefit from our gummy format.

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