VITAMIN D SOURCE

📋 Quick facts

Quick Facts:

• Category: other
• Also Known As: Fuente de vitamina D, מקור לוויטמין D, Bron van Vitamine D, Fonte de vitamina D, Izvor vitamina D, แหล่งของวิตามินดี, D-vitamiinin lähde, Vitamin D-Quelle, Источник витамина D, Източник на витамин D, Source de vitamine D, Font de Vitamina D, D-vitaminkälla, Źródło witaminy D, D-vitaminforrás, Fonte di vitamina D, izvor vitamina D

Proven Benefits At A Glance:

• Vitamin D exists in different forms: cholecalciferol (D3) and calcidiol (25-hydroxyvitamin D3), which your body processes differently
• The calcidiol form raises blood vitamin D status more efficiently than cholecalciferol, especially at higher doses
• Calcidiol also increased serum calcium and phosphorus more than cholecalciferol in one study
• In dairy cows, calcidiol led to higher milk production in early lactation compared to cholecalciferol

📊 Comedogenicity

🛡️ Safety rating

Safety tier is a starting heuristic from regulatory status and comedogenic rating, not a dermatological verdict — see our Terms for the full disclaimer. Research confidence reflects how many real cited studies back this ingredient, not the strength of their findings.

🌍 Regulatory Status

💧 Skin Type Compatibility

⚠️ Don’t Combine With

📚 Research & Evidence

🔬 The Science

Vitamin D supplementation comes in multiple chemical forms, and research shows they don’t work identically in the body. The two main types studied are cholecalciferol (also called vitamin D3, the standard form) and calcidiol (also called 25-hydroxyvitamin D3, a more processed form that’s closer to what your body actually uses). #1: When comparing these sources, calcidiol raised serum 25-hydroxyvitamin D concentrations more effectively than cholecalciferol (J Dairy Sci, 2023). This is the standard blood marker doctors use to assess vitamin D status—calcidiol supplementation boosted this marker to 35.6–65.7 ng/mL depending on dose, while cholecalciferol only reached 24.7–29.6 ng/mL at equivalent doses.

#2: Calcidiol also increased serum calcium and phosphorus more than cholecalciferol (J Dairy Sci, 2023), which matters because these minerals work together with vitamin D for bone health and other body functions. In a separate study of pregnant dairy cows, #3: calcidiol produced greater milk production in early lactation (37.5 kg/day) compared to cholecalciferol at 34.1 kg/day, suggesting potential benefits in high-demand physiological states (Transl Anim Sci, 2022). However, the research here focuses on animal nutrition—these are controlled studies in cattle, not humans—so the direct translation to human skincare or oral supplementation remains unclear. The sources are also limited in scope and don’t address topical vitamin D application or broader wellness claims.

📄 Related Research

Matched by search — not necessarily verified support for every statement above.

• Blakely LP et al. (2023). Effect of vitamin D source and amount on vitamin D status and response to endotoxin challenge. J Dairy Sci.
• Beck MR et al. (2022). Effect of vitamin D source and dietary cation-anion difference in peripartum dairy cows on calcium homeostasis and milk production. Transl Anim Sci.

🧴 Products Containing VITAMIN D SOURCE