ZUM XR Energy Drink

Caffeine Level
Serving Size
fl. oz bottle
Caffeine Strength
VERY HIGH Warning: This drink has very high levels of caffeine.
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ZUM XR Energy Drink (pronounced zoom)  is an energy/sports drink hybrid that contains time-released caffeine.

Most energy drinks deliver their caffeine as soon as they are consumed, but ZUM uses innovative technology that slowly releases some of the drink's caffeine over time, which can last up to 5 hours.

When a 16 fl.oz. bottle is consumed, Zum Energy Drink releases 60mg of caffeine immediately and then gradually releases 140mg over an extended period

The makers of ZUM do this by encapsulating the caffeine in tiny beads made of microcrystalline cellulose, which only begin dissolving once in the small intestine.

Besides caffeine, ZUM also delivers electrolytes, carbs, and hydration. There is also a 10-calorie version sweetened with Stevia extract. 

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Ingredients in ZUM XR Energy Drink


Sugar content: Unknown.

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Caffeine Comparisons

ZUM XR Energy Drink contains 12.50 mgs of caffeine per fluid ounce (42.27mg/100 ml).

Caffeine (mg) per Ounce
10090807060 5040302010 0 ZUM XR Energy Drink 5 Hour Energy Espresso Shot Coca-Cola Classic Spike Energy Drink
Total Caffeine (mg)
400360320280 24020016012080 400 Bottle of ZUM XR Energy Drink Can of Coca-Cola Classic Bottle of Redline Energy Drink Can of Monster Energy Drink Can of Red Bull