You have options when it comes to energy drinks. But when you actually compare what is inside the can, the differences are massive. Here is an honest look at four popular choices.

Monster Energy (Original, 16oz)

Caffeine: 160mg (synthetic). Sugar: 54g. Artificial colors: Yes (Blue 1, Red 40). Calories: 210. Monster is the OG of energy drinks and it still dominates shelf space. But 54 grams of sugar and synthetic dyes in every can is hard to justify in 2026, especially with the FDA dye ban coming.

Celsius (Original, 12oz)

Caffeine: 200mg (synthetic). Sugar: 0g. Artificial sweeteners: Sucralose. Calories: 10. Celsius markets itself as a fitness drink. Low calorie is nice, but 200mg of synthetic caffeine is a lot, and sucralose is doing the heavy lifting on taste. Also zero electrolytes in the original formula.

Ghost Energy (16oz)

Caffeine: 200mg (synthetic). Sugar: 0g. Artificial sweeteners: Sucralose. Artificial colors: Yes. Calories: 5. Ghost has great branding and flavor collabs, but under the hood it is synthetic caffeine, artificial sweeteners, and artificial colors. The gaming and lifestyle marketing is cool, but the ingredients tell a different story.

IS-BE (16oz)

Caffeine: 100mg (organic green tea). Sugar: 12g (organic cane sugar plus monk fruit). Artificial colors: None. Vitamin C: 200% DV. Electrolytes: Yes. Calories: 50. IS-BE takes a different approach. Lower caffeine from a natural source, real sugar in a small amount, no artificial anything, plus electrolytes and Vitamin C. It is designed for sustained energy, not a synthetic spike.

The Bottom Line

If you want the most caffeine possible and do not care about ingredients, Monster or Ghost will do it. If you want clean, real ingredients with smooth energy and no crash, IS-BE is in a category of its own. See for yourself.