A vitamin with a well-documented role in immune regulation, closely tied to respiratory wellness.
Vitamin D3 (cholecalciferol) is the form of vitamin D the body naturally produces from sun exposure and the form most commonly used in supplements.
It supports the spray's immune-regulation layer, with a specifically documented connection to respiratory health.
Vitamin D3's role in immune regulation is one of the more extensively documented relationships in nutrition 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.