Hours of Energy Now - No Crash Later Feel It In Minutes - Lasts For Hours B-Vitamins and Amino Acids Only 4 Calories Sugar FreeExtra Strength 5-Hour Energy is designed for extra busy, extra hard-working people who need an extra-big boost to help power them through their day.Extra Strength 5-Hour Energy sports a beefed up energy blend. It's packed with B vitamins, amino acids and other nutrients found in everyday foods, or that are already in you. It contains zero sugar, zero herbal stimulants and only four calories. It has as much caffeine as 12 ounces of the leading premium coffee.Extra Strength 5-Hour Energy shots take just seconds to drink and are light and portable. They easily fit in your desk drawer, glove box, locker, purse or backpack. They are non-carbonated and require no refrigeration so you can drink it any time you need a quick boost.Recommended Use: Drink half of bottle (0.965 oz.) for moderate energy. For maximum energy, drink one whole bottle. Do not exceed two bottles of 5-Hour Energy shots daily, consumed several hours apart. Refrigeration not required. Use or discard any remainder within 72 hours (three days) after initial opening.CAUTION: Contains caffeine comparable to a cup of the leading premium coffee. Limit caffeine products to avoid nervousness, sleeplessness and occasional rapid heartbeat. You may experience a Niacin Flush (hot feeling, skin redness) that lasts a few minutes. This is caused by Niacin (Vitamin B3) increasing blood flow near the skin.Do not take if you are pregnant, nursing or under 12 years of age.5 Hour Energy Extra Strength contains Phenylketonurics: Contains phenylalanine.Recommended Use: Drink half of bottle (0.965 oz.) for moderate energy. For maximum energy, drink one whole bottle. Do not exceed two bottles of 5-Hour Energy shots daily, consumed several hours apart. Refrigeration not required. Use or discard any remainder within 72 hours (three days) after initial opening.CAUTION: Contains caffeine comparable to a cup