The strongest energy drinks
These are the 20 highest-caffeine cans in our database, sorted by milligrams, with each one's Shark Score so you can find the strong ones that also taste good. Know your limit: the FDA cites 400 mg a day for healthy adults.
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| # | Drink | Caffeine | Score |
|---|---|---|---|
| 1 |  Reign Inferno Red DragonReign |
300 mg | 90 |
| 2 |  Rockstar XDurance Super Sour Green AppleRockstar |
300 mg | 89 |
| 3 |  Bang Nectarine BlueberryBANG |
300 mg | 88 |
| 4 |  Raze Strawberry ColadaRaze |
300 mg | 88 |
| 5 |  Reign Inferno Watermelon WarlordReign |
300 mg | 87 |
| 6 |  Reign Lilikoi LycheeReign |
300 mg | 85 |
| 7 |  CELSIUS ESSENTIALS Sparkling Cherry LimeadeCelsius |
300 mg | 84 |
| 8 |  Reign White Gummy BearReign |
300 mg | 84 |
| 9 |  BANG Purple HazeBANG |
300 mg | 83 |
| 10 |  Reign Cherry LimeadeReign |
300 mg | 81 |
High-caffeine drinks aren't recommended for children, pregnant people, or anyone sensitive to caffeine.
Only drinks you can buy now are listed. Retired cans keep their scores in the full rankings.
The full list
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Shark Score 90
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Elite
“Smooth fruit punch flavor with melon aftertaste that walks the fine line of re-drinkability by not being too sweet.”Jared
-
Shark Score 89
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Excellent
“Strong and sour green apple energy drink. Superior to most sour beverages. Highly rated kick and taste make it my highest rated Rockstar.”Cam
-
Shark Score 88
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“A sweet and crisp nectarine flavor, complemented by a subtle, delicious blueberry aftertaste.”Cam
-
Shark Score 88
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“A unique strawberry taste, great mouth feel, and high caffeine content that will leave you wanting more.”Cam
-
Shark Score 87
- Hard to find
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“Incredible kick and appearance with an enjoyable flavor. Directly inferior taste to Adrenaline Shoc Watermelon, but still a very solid all-around energy drink.”Cam
-
ReignShark Score 85
6. Reign Lilikoi Lychee
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“Lilikoi Lynchee is such a unique drink, it’s like one of the Bang energy flavors put a tux on”Matt
-
Shark Score 84
- 300 mg caffeine
- 20 oz can
- 15 mg/oz
- Zero sugar
- Excellent
“Strong limeade, subtle cherry.”Jared
-
Shark Score 84
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“If your go-to soda is Sprite and you’re looking for a caffeine boost, look no further.”Jared
-
BANGShark Score 83
9. BANG Purple Haze
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“The best Bang. Superior grape Fanta flavor. Incredible kick. No real downsides.”Cam
-
ReignShark Score 81
10. Reign Cherry Limeade
- Leaving shelves
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“Smooth, well-balanced 300mg energy drink. Cherry is candy-sweet with muted limeade flavor.”Jared
-
BANGShark Score 80
11. BANG Blue Razz
- Leaving shelves
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“If you want a blue raspberry energy drink that’s sweet, but not too sweet, and has a kick-ass kick, you’ll love this one right here.”Jared
-
ReignShark Score 80
12. Reign Razzle Berry
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Excellent
“One of the best energy drinks out there. The high caffeine content, delicious taste, and incredible kick make it unique. It has a great mouth feel, and will truly awaken your taste buds.”Cam
-
Bucked UpShark Score 79
13. Bucked Up Blood Raz
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Enjoyable
“One of the most underrated drinks. Delicious flavor, high caffeine content, and zero Calories. I would #GETBUCKEDUP any day with Bucked Up’s Blood Raz edition.”Cam
-
RazeShark Score 74
14. Raze Baja Lime
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Enjoyable
“Baja Blast, but even more refreshing with a dope kick.”Cam
-
Shark Score 73
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Enjoyable
“Reignbow Sherbet really does taste like reignbow sherbet from an ice cream shop. Or one of those sherbet cups that you would have as a kid. You know what I’m talking about.”Jared
-
Shark Score 68
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Decent
“If you’re a Bang truther and like artificial cherry and vanilla, this is probably the perfect storm for you.”Jared
-
BANGShark Score 66
17. BANG Star Blast
- Leaving shelves
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Decent
“It tastes exactly like Strawberry Hi-Chew!”Jared
-
Shark Score 46
- Leaving shelves
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Mediocre
“It really is bizarre to consume cotton candy flavor as a drink. Most notably, it’s more exciting in concept than in execution.”Matt
-
Shark Score 39
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Zero sugar
- Trash
“Reign Orange Dreamsicle tastes like an orange creamsicle. It has a lot of caffeine, hence only recommended for those over 18. Sorry for the rhyme, but this drink is not worth your time.”Cam
-
Cocaine EnergyShark Score 42
20. Cocaine Energy Drink Spicy
- 280 mg caffeine
- 12 oz can
- 23.3 mg/oz
- Mediocre
“It literally has chili powder extract.”Jared
Questions
What is the strongest energy drink?
Of the drinks we've rated, Reign Inferno Red Dragon has the most caffeine: 300 mg per 16 fl oz can.
Is 300 mg of caffeine too much?
For healthy adults, the FDA cites 400 mg a day as generally safe, so one 300 mg can leaves room for about one cup of coffee. Start lower if you're sensitive to caffeine, and skip these if you're pregnant or under 18.