How much caffeine is in Reign Inferno Red Dragon?

Reign Inferno Red Dragon by Reign contains 300mg of caffeine per can.

Is Reign Inferno Red Dragon sugar-free?

Yes, Reign Inferno Red Dragon is sugar-free.

How many calories are in Reign Inferno Red Dragon?

Reign Inferno Red Dragon has 10 calories per can.

How does the caffeine in Reign Inferno Red Dragon compare to daily guidelines?

One can (16 fl oz): 300 mg caffeine (about 18.8 mg per fl oz), about three-quarters of the FDA's 400 mg a day guideline for healthy adults.

Does Reign Inferno Red Dragon have more caffeine than a cup of coffee?

Yes. At 300 mg, Reign Inferno Red Dragon has about as much caffeine as 3 cups of brewed coffee (an 8 oz cup of brewed coffee has about 95 mg, per the USDA).

Reign

Reign Inferno Red Dragon

Availability last checked Oct 12, 2026

300mgMore caffeine than 84% of the drinks we track

performanceSugar-free

Caffeine: 300mg; ≈ 3 cups of coffee
Sugar: 0g
Calories: 10

How it compares

vs. 938 drinks

Caffeine: 300mg
Sugar: 0g
Calories: 10

Based on every drink in our catalog. See the category-wide data

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Pre-workout — label lists Citrulline

Ingredients & nutrition facts

Carbonated Water
Citric Acid
L-Citrulline
Sodium Citrate
Natural Flavors
Panax Ginseng Extract
L-Leucine
Caffeine
L-Isoleucine
L-Valine

Label not yet re-checked

Frequently asked questions

How much caffeine is in Reign Inferno Red Dragon?: Reign Inferno Red Dragon by Reign contains 300mg of caffeine per can.
Is Reign Inferno Red Dragon sugar-free?: Yes, Reign Inferno Red Dragon is sugar-free.
How many calories are in Reign Inferno Red Dragon?: Reign Inferno Red Dragon has 10 calories per can.
How does the caffeine in Reign Inferno Red Dragon compare to daily guidelines?: One can (16 fl oz): 300 mg caffeine (about 18.8 mg per fl oz), about three-quarters of the FDA's 400 mg a day guideline for healthy adults.
Does Reign Inferno Red Dragon have more caffeine than a cup of coffee?: Yes. At 300 mg, Reign Inferno Red Dragon has about as much caffeine as 3 cups of brewed coffee (an 8 oz cup of brewed coffee has about 95 mg, per the USDA).