More than ever, consumers are seeking highly bioavailable vitamin D3 solutions that they can depend on to strengthen immunity and protect against colds, flu, and viruses. D-SORB™ utilizes the VESIsorb® delivery system which dramatically improves the absorption and bioavailability of vitamin D3 and ensures optimal therapeutic benefits.

Unfortunately, vitamin D3 has very low aqueous solubility, rendering it poorly bioavailable after oral administration. To overcome these limitations, SourceOne utilizes the VESIsorb® delivery system which has been clinically proven to dramatically improve the pharmacokinetic parameters (Cmax, Tmax, and AUC) of vitamin D3. The VESIsorb® delivery system also protects the vitamin D3 from oxidation, stomach acids, and light; thus reducing overages generally associated with vitamin D.

Improved bioavailability directly translates to delivering higher blood plasma levels with a much lower dose.

‍The benefits are unmatched:

- Faster onset, independent of food/fat status.

- Fewer servings required to achieved the desired therapeutic effect.

- Superior loading for smaller and easier to consumer capsules.

- Addressing issues related to poor absorption like age, diet, and gender.

Simply put, you can achieve the recommended daily dose of vitamin D3 faster and with fewer servings compared to standard Vitamin D3 products.

SourceOne only uses vitamin D3 as cholecalciferol as it is the most potent and effective form of vitamin D, especially when compared to vitamin D2. Vitamins D2 (ergocalciferol) and D3 (cholecalciferol) are naturally occurring precursors that are converted in the liver and kidneys to the biologically active form of Vitamin D, although studies have shown that vitamin D3 is more effective than Vitamin D2 in raising and maintaining levels of biologically active Vitamin D.