Vitamin D is an essential nutrient that facilitates calcium absorption in the body. This helps maintain strong bones and supports the immune system. Vitamin D is available in two common forms: vitamin D2 (ergocalciferol) and vitamin D3 (cholecalciferol). While both help maintain overall health, they have key differences in sources, absorption, and effectiveness. Many people are unaware of which type is better for their health and how it affects the body.
This blog outlines the primary difference between vitamin d2 and d3 to help you make an informed choice.
Key differences between vitamin D2 and vitamin D3
The table below highlights the vitamin D2 vs D3 details:
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Factor
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Vitamin D2 (Ergocalciferol)
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Vitamin D3 (Cholecalciferol)
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Source
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Found in plant-based sources like mushrooms and fortified foods.
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Found in animal-based sources like fish, eggs, and liver, and also produced by the skin when exposed to sunlight.
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Absorption Rate
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Less effective in raising vitamin D levels in the body.
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More effective as it is better absorbed by the body.
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Stability
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Less stable when exposed to light and heat, leading to a shorter shelf life.
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More stable and has a longer shelf life.
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Potency
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Weaker in increasing vitamin D levels in the blood.
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More potent and helps maintain higher vitamin D levels for a longer duration.
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Use
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Helps with low thyroid activity and to fix soft bones.
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Helps with bone health, immune system function, muscle strength, and heart health.
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Conclusion
Compared to vitamin D2, vitamin D3 is thought to be more effective because it is better absorbed, more potent, and remains in the body for a longer time. Deficiency can weaken bones and muscles, increasing infection risks. So, maintaining a healthy D2 and D3 level is essential. Some mediclaim insurance plans cover vitamin D tests and treatments, helping proactive health management.
Disclaimer: The information provided in this blog is for educational and informational purposes only. It is not intended as a substitute for professional advice, diagnosis, or treatment. Please consult your general physician or another certified medical professional for any questions regarding a medical condition. Relying on any information provided in this blog is solely at your own risk, and ICICI Lombard is not responsible for any effects or consequences resulting from the use of the information shared.