Caffeine in Drinks

Rockstar XDurance

Rockstar XDurance
Caffeine
300 mg
per 16 fl oz
EXTREME
This drink contains extreme levels of caffeine.
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Calories
10
kCal
Sugar
0
grams

Rockstar XDurance Energy Drink is labeled as a performance energy drink targeted to athletes. They've thrown in an extra helping of branched-chain amino acids, creatine, and electrolytes, yet spared the sugar rush by only delivering 2 grams per can.

The latest version of Xdurance is Rockstar's attempt to compete with Bang Energy Drink which has exploded in popularity. 

Note: Now Xdurance also comes in a 24 fl oz can with 400 mg of caffeine per can! Be extra careful with this one. 

Rockstar XDurance is the most caffeinated energy drink from Rockstar. 

Flavor Variations

  1. Cotton Candy
  2. Super Sours Green Apple
  3. Peach + Tea
  4. Kiwi Strawberry
  5. Blue Razz
  6. Marshmallow

The following review was for the original Xdurance not the 300 mg/can version.

A Blueberry Marathon in My Mouth

Although XDurance is blueberry, pomegranate, and acai flavored, the dominant flavor is definitely blueberry. It has a light flavor and is moderately sweet with a mild artificial sweetener aftertaste. It was nice to see no artificial flavors or colors in Rockstar XDurance. Vegetable juice makes it red instead of the infamous red dye.

Rockstar XDurance Delivers

Not only have they upped the amino acid profile, but also, the caffeine has been increased. At 300mg/can, this is 140mg more than a traditional Rockstar. It's like drinking almost 4Red Bulls. Rockstar Xdurance definitely increased my alertness, but I thought the flavor was a little off since I'm not a big blueberry drink fan.

Buyer Beware

People who aren't used to larger amounts of caffeine or who are unsure of their sensitivity level to caffeine should avoid this drink.  It can cause problems for some people.

Here's what one consumer reported to us:

I would like to share my story about Rockstar XDurance. I had been drinking Monsters for the past 3 days and they seemed to have no effect. I had previously tried one of the XDurance before and thought I was okay to have another. I was hyperfocused for the remainder of that day and then chest pain set in. I have heard that a majority of heart attacks happen at night but figured it was a panic attack. Then my jaw felt as if it were pounding, my head started throbbing and my shoulder hurt. I panicked. My heart rate when the paramedics came was 136. As the drink wore off, it went down, but I genuinely thought I was having a heart attack. I didn't go to the hospital, but the lesson I learned that night will keep me from ever touching another energy drink. I think this drink crosses the line from "extreme" to dangerous.

-Mike

Where to buy

Rockstar Energy Drink with COQ10 and Electrolytes, 300mg Caffeine, Xdurance Blue Raz, 16oz Cans (12 Pack) (Packaging May Vary)
Amazon.com price $26.64 ($0.14 / Fl Oz)
(as of 01:04 EST More InfoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.)
Spike High-Altitude Energy - 350 mg Caffeine, 800 mg Beta-Alanine, 1000 mcg Vitamin B12 - Sugar-Free Strawberry Lemonade 16 oz (Pack of 12)
Amazon.com price $29.99 ($0.21 / Fl Oz)
(as of 01:04 EST More InfoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.)
Rockstar Energy Drink 4 Flavor Xdurance 300mg Caffeine Variety Pack, Xdurance Variety Pack, 12 Count
Amazon.com price $25.24 ($0.13 / Fl Oz)
(as of 01:04 EST More InfoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.)

Ingredients in Rockstar XDurance

Carbonated Water, Citric Acid, Malic Acid, Caffeine, Sodium Benzoate (preservative), L-leucine, Sucralose, Potassium Citrate, Magnesium Lactate, Potassium Sorbate (preservative), Acesulfame Potassium, L-valine, L-isoleucine, Natural Flavor Niacinamide, D-calcium Pantothenate, Dipotassium Phosphate, Coenzyme 0-10, Pyridoxine Hydrochloride, Cyanocobalamin.

This is a sugar-free energy drink - compare with other sugar-free drinks.

Is Rockstar XDurance high in caffeine?

Rockstar XDurance contains 300 mg of caffeine in a 16 fl oz can.

This equates to 18.75 mg of caffeine for every fl oz and 63.40 mg for every 100 ml.

300 mg
Rockstar XDurance
160 mg
Monster energy
80 mg
Red bull
60 mg
Instant Coffee
35 mg
Coca-cola

Sources

the can See other references.

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