Nitro 2 Go Instant Energy Extra Strength Promegrape energy shot. Made with pomegranate and grapes to make a great tasting energy shot, along with the extra boost of energy to get you through your hectic day. It is packed with B-vitamins for energy and amino acids for alertness and focus. Only has as much caffeine as a cup of premium coffee. Give you extra energy that can last up to 7 hours to get you through the day.