USN Sports Ener-G Berry. USN Ener-G is a great tasting, high energy, carbohydrate based drink with added electrolytes and phosphates to fuel your body and sustain your energy whenever you need it.While we try to ensure that product information is correct, on occasion manufacturers may alter their ingredient lists. Please note actual image may vary. Information on this site is not intended to diagnose or treat any health condition. We recommend that if you are pregnant, nursing, have a medical condition or are currently taking medication that you seek advice from a health professional before you take any dietary supplement. Always read the product directions before use and do not exceed the recommended intake. Food Supplements should not be taken as an alternative to a balanced diet. Keep out of reach of children.