Private Label Vitamin D3 400 IU

Vitamin D3 participates in mineral metabolism after conversion to active calcitriol. It helps regulate calcium absorption and the phosphate availability needed for normal bone mineralization. The 400 IU strength can complement other dietary sources, although it does not by itself meet the U.S. adult recommended intake of 600–800 IU per day. Consistent cholecalciferol potency distinguishes a reliable lower-strength formula.

Cpack Manufacturing offers Vitamin D3 400 IU within its stock softgel range for private label branding. Our quality controls include raw material identity testing, documented manufacturing records, and independent laboratory validation of microbial and heavy metal limits. These safeguards support ingredient traceability and consistent production quality for your brand.

The main benefits provided by our Private Label Vitamin D3 400 IU supplements are as follows:

• Cholecalciferol — The D3 form provides a labeled strength of 400 IU, equivalent to 10 mcg, to supplement dietary vitamin D intake.
• Vitamin D Metabolism — Liver conversion produces 25-hydroxyvitamin D, the principal blood marker of vitamin D status; kidney conversion then produces active calcitriol.
• Bone and Mineral Support — Calcitriol acts through the vitamin D receptor to regulate intestinal calcium absorption and phosphate availability for bone and tooth mineralization.
• Neuromuscular Function — Vitamin D participates in neuromuscular regulation. Its role in calcium homeostasis contributes to normal muscle contraction and nerve function.
• Immune and Cellular Regulation — Active vitamin D influences gene expression through vitamin D receptor signaling, contributing to normal immune function and cellular differentiation.