The Barter Protocol D3K2 provides a highly bioavailable form of Vitamin D3, delivering 125 mcg (5,000 IU) per softgel.
Vitamin D is a term used to describe a group of fat-soluble vitamins, with vitamin D3 (cholecalciferol) being a commonly utilized form of Vitamin D. The body naturally produces Vitamin D3 through exposure to sunlight, while dietary sources and supplementation can also provide Vitamin D3. The D3K2 formula provides Vitamin D3 in a convenient softgel format designed to complement daily nutritional needs.*
Vitamin D3 is converted by the body into metabolites, including calcitriol, as part of normal Vitamin D metabolism. Vitamin D plays an important nutritional role in several normal physiological processes, including the utilization of minerals such as calcium, magnesium, phosphate, and zinc. Vitamin D is also involved in the maintenance of normal bone, muscle, immune, cardiovascular, and neuromuscular function.*
Providing adequate Vitamin D as part of a balanced nutritional routine can help support normal body functions and overall wellness.*
We stand behind our supplements and want you to feel confident in your purchase. For safety and product integrity, we accept returns on unopened and unused products within 30 days of purchase. To qualify for a return, the product must be sealed in its original packaging, the safety seal must remain intact, and proof of purchase (your original receipt) is required.
At Alternative Family Medicine & Chiropractic, we restore balance through root-cause, patient-centered care. Our supplements support this greater mission, integrating with functional testing, nutrition, chiropractic, and personalized guidance to empower holistic health and lasting vitality.

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