Of the seven ingredients in CardioCharge, none shows up in a bigger dose than D-Ribose. Here's a plain explanation of what it actually does.
D-Ribose is a naturally occurring sugar, but it doesn't work like table sugar. Instead, it's a building block your cells use to manufacture ATP — the molecule every cell in your body burns for energy.
Heart muscle never gets to rest the way skeletal muscle does, which means it has an unusually high demand for ATP around the clock. Some research suggests that under stress, heart tissue can be slow to fully restore its ATP stores, and D-Ribose may help speed that process along.
Doses in research on D-Ribose and cardiac energy have often landed in the multi-gram range, which is part of why CardioCharge includes it at a level that would be awkward to fit into a capsule — another reason the powder format makes sense here.