Mistake 2: You’re Taking the Wrong Form of Vitamin D
When you walk down the vitamin aisle, you might notice two different forms of vitamin D listed on the labels: D2 and D3. They might seem similar, but your body treats them quite differently, and choosing the right one can make a significant difference in how you feel.
Vitamin D2 (Ergocalciferol): This form is derived from plant sources, like mushrooms that have been exposed to ultraviolet light. It’s often used in fortified foods like milk and cereal and is available as a prescription.
Vitamin D3 (Cholecalciferol): This is the form of vitamin D that your own body produces when your skin is exposed to sunlight. It is also found in animal-based foods like fatty fish (salmon, mackerel) and egg yolks. Most over-the-counter supplements are D3.
So, which one is better? Overwhelmingly, scientific research shows that Vitamin D3 is more effective at raising and maintaining vitamin D levels in the blood. Studies have found that D3 is more potent and stable than D2. Think of it as giving your body the exact form of the vitamin it knows how to make and use best.
If you are currently taking a prescription vitamin D, it is most likely D2. If you find it isn’t helping with your fatigue, it’s worth having a conversation with your doctor about whether switching to an over-the-counter D3 supplement would be a better choice for you. When you’re at the store, simply check the label on the bottle. Look for the word “cholecalciferol” or “Vitamin D3.” It’s a small detail that can have a big impact on your journey to feeling more energetic.
