Private Label Vitamin D3 2,000 IU

Vitamin D3 is a fat-soluble secosteroid precursor that is converted to 25-hydroxyvitamin D and then to calcitriol, the hormonally active metabolite. Calcitriol binds the vitamin D receptor to regulate genes involved in calcium transport, phosphate balance, skeletal remodeling, neuromuscular activity, and immune signaling. Consistent potency and protection of cholecalciferol from avoidable degradation are central quality considerations for a daily D3 softgel.

To ensure that CPack Manufacturing is providing a consistent Vitamin D3 product, the formula delivers a defined 2,000 IU cholecalciferol strength in a softgel format suited to fat-soluble nutrient delivery. Controlled processing and third-party testing support label-strength consistency and dependable integration into private label vitamin portfolios.

The main benefits provided by our Private Label supplements are as follows:

• Cholecalciferol (Vitamin D3) — Provides 2,000 IU per softgel and acts as the nutritional precursor to circulating 25-hydroxyvitamin D and hormonally active calcitriol.
• Vitamin D Receptor (VDR) Signaling — Activated vitamin D binds VDR, a nuclear receptor that regulates transcription across mineral metabolism, immune signaling, and cellular differentiation pathways.
• Intestinal Calcium Transport — Calcitriol-VDR signaling supports active calcium uptake by regulating transport proteins involved in moving calcium across intestinal epithelial cells.
• Calcium and Phosphate Homeostasis — Vitamin D helps maintain serum calcium and phosphate availability required for normal hydroxyapatite formation and continuous skeletal remodeling.
• Neuromuscular and Immune Function — Vitamin D receptors are expressed in multiple tissues, supporting signaling pathways involved in muscle function and modulation of innate and adaptive immune responses.