NAC is studied for supporting the body's mucus-clearing processes, and Manuka Honey MGO-400+ is included for soothing throat and airway comfort.
Quercetin and Vitamin D3 are paired for their roles in supporting the body's respiratory and immune processes together.
CoQ10 supports cellular energy in heart tissue, and Hawthorn Berry has a long traditional history of cardiovascular support use.
L-Theanine (in the spray) supports calm focus, while L-Carnitine and Magnesium (in the capsule) support everyday cellular energy and healthy heart rhythm.
NAC has a genuine research base around respiratory support. CoQ10 and Hawthorn Berry are both reasonably well-studied for cardiovascular support, particularly in aging adults. Quercetin and Manuka Honey have smaller, more preliminary research bases specific to these use cases. Every individual ingredient here has published research behind it — but the specific BreathEaseX + CardioEaseX combination as a finished product has not had its own dedicated clinical trial. That's worth knowing plainly rather than glossing over.