A well-studied vitamin with a documented role in immune regulation and respiratory health.
Vitamin D3 (cholecalciferol) is the form of vitamin D the body produces from sun exposure, and the form most consistently used in supplements.
It supports the spray's immune-regulation layer, with a well-documented connection to respiratory health specifically.
Vitamin D3's role in immune regulation is one of the more extensively documented relationships in nutritional research.
This describes general research on Vitamin D3 itself, not the finished BreatheEaseX or CardioEaseX product, which hasn't been the subject of its own clinical trial. See the full ingredients list or the kit overview for more.