The EFS liquid shots differ from other liquid energy packets because they do not contain gelling agents that can slow down absorption or inhibit digestion. One dose of EFS Liquid Shot contains 400-calories of a special formula that contains 1500-milligrams of electrolytes, 1000-milligrams amino acids along with a 100-grams of simple and complex carbohydrates. EFS liquid shots are packaged in an easy-to-use, re-sealable container that can be refilled as well as recyclable. They retail for $5.99 for the flask and $29.95 for a 6 flask refill container. For more information visit: www.firstendurance.com.