Natural Balance make great herbal products whose formulas tend to focus on just a few active-ingredients, unlike other brands that take the more-is-better approach to ingredients. With Extra Strength Guarana, Natural Balance has a very inexpensive and effective all-herbal energy blend that helps to increase physical and mental energy, while reducing fatigue. And it does so with a tight and compact formula based around the energy herb guarana. Natural Balance uses easy-to-swallow and highly concentrated capsules that break down fast to kick in quickly. Extra Strength Guarana works great as a preworkout supplement, a study aid, when you're moving or when trying to combat jet lag.