Cyberboost Proenergy Bars are consumables available in Deus Ex: Human Revolution.
Cyberboost Proenergy is an artificial food energy source, packed with proteins and carbohydrates. It is 90% fat free with no sugar added.
When consumed, Cyberboost bars replenish one energy cell in full, allowing Adam to use Augmentations. Two full cells can be recharged with Cyberboost Proenergy Packs, and three with Cyberboost Proenergy Jars. Overall, the bar provides the best energy-to-inventory ratio: they stack five deep, offering five energy cells per inventory space, compared with three for the pack, and less than one for the jar.