Here are the stats on Monster Drink Nutrition:
One can of Monster Energy Drink contains 54 grams of sugar, or more than 13 teaspoons. Also, the beverage contains 360 milligrams of sodium, which is about one-fourth of the recommended daily amount, according to the American Heart Association. Each can contains about 160 milligrams of caffeine, which equals a cup of coffee. Monster Energy Drinks are also rich in B vitamins, with an 8-ounce serving providing 100 percent of the daily value of vitamins B2, B3, B-6 and B-12, based on a 2,000-calorie diet.
Aside from all of that sugar, it does supply the fantastic daily dose of vitamin B. One a day is not so horrible, but any more than that is not good.