Ingredient
Vitamin D1
What is Vitamin D1?
Vitamin D1 is a combination of vitamin D2 (ergocalciferol) and a compound called lumisterol. It is not commonly isolated or used separately due to the complex nature of its components.
Vitamin D1 is not widely used or recognized in supplements or fortified foods. Most vitamin D supplements are either vitamin D2 or D3. The research on vitamin D primarily focuses on these active forms, which are known for their role in calcium absorption and bone health.
When you see Vitamin D1 on a label, it might be an error or a misinterpretation of the more common forms like D2 or D3. It's important to look for specifics if you're considering it for dietary or health reasons.
Commonly found in: rarely used directly, vitamin supplements sometimes, fortified foods occasionally
The FDA does not specifically recognize Vitamin D1 as a distinct supplement or ingredient; they focus on D2 and D3 for health claims and regulations.
Scientific studies primarily focus on D2 and D3. Vitamin D1 does not have significant independent documentation or research support.
Since Vitamin D1 includes D2 (which can be vegan) but also involves other compounds, its source can vary; specific labeling needed.
Scout's take
Vitamin D1 helps regulate calcium absorption, promoting healthy bones and immune health.
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