Vitapod
From SpiralKnights
Vitapods are items that add a number of units of health to the knight that picks it up by walking over it. They appear as white capsules with red markings showing the number of health bars that will be added. The value of the vitapod is always evenly divisible by the tier it is dropped in. When you run over a vitapod, you will pick it up automatically, as long as it has a higher number than your current vitapod (or you do not have a current vitapod). Because the health bars added by a vitapod are empty, players will need to find hearts to fill the additional bars. Although stronger vitapods have been available in earlier versions of the game, the strongest vitapod available gives 21 more health (only achievable in the Shadow lairs).
Vitapods are always used by the knight that picks them up.
You can drop your vitapod by clicking on the symbol in your HUD and dragging it to the area near your knight.