Vitamin D2
Ergocalciferol, the plant-based form of vitamin D. Less effective than D3 at raising blood levels but is the strict vegan option.
💡 Absorption: D3 is 87% more effective than D2 at raising 25(OH)D. D2 is the only strict vegan option (except lichen-derived D3).
⚠️ Caution: Same precautions as D3. Requires a higher dose to achieve the same levels.
Recommended doses
Range: 1000 – 4000 UI
Lichen-sourced D3 is the best vegan option if available
📚 Scientific references (3)▼
UV-exposed mushrooms are a natural vegan source of vitamin D2.
D3 is significantly more effective than D2 at raising serum 25(OH)D levels.
D2 has shorter half-life and lower potency than D3 for maintaining vitamin D status.
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