25 mcg (1000 IU) / 100-200 Softgels / 3-6 Months Supply
Jarrow Formulas® Vitamin D3 provides cholecalciferol, which is the form produced by the (human) skin in response to UVB exposure (sunlight) and may also improve vitamin D status better than equivalent amounts of ergocalciferol (D2).* Vitamin D3 is ultimately converted to its hormonally-active form, calcitriol, in the body as needed. Calcitriol enhances dietary calcium and phosphorous absorption, supports the production of osteocalcin (an important structural protein in bone), and supports a healthy immune response.*
About Vitamin D3 - 1000IU
Suggested Use
Superior Science
Our staff of scientists leverage expertise from researchers and institutions worldwide who study products and ingredients, and how they work with your body. By supporting scientific research and funding studies, Jarrow Formulas® maintains superior science as the guiding principle in all it does.
Smarter Formulas
Our formulations are carefully crafted and informed by strong scientific research. Jarrow Formulas’ products therefore have the potential to support and promote optimal health.
Quality Ingredients
Our customers can be assured of both purity and potency in every Jarrow Formulas product. We evaluate the purity, strength and composition of all ingredients and only work with raw material suppliers that follow the same Current Good Manufacturing Practices (cGMP) we do.
Our Science
