The best watermelon energy drinks

These are the 11 energy drinks we've rated with watermelon in the flavor name, best first by Shark Score. 7 are sugar-free, and caffeine runs from 114 to 300 mg per can.

By the Sharks · Updated October 2026 · How we score

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Top 10 at a glance
#	Drink	Caffeine	Score	Buy
1	PRIME Energy Drink Strawberry WatermelonPRIME	200 mg	90	Price for PRIME Energy Drink Strawberry Watermelon
2	Adrenaline Shoc WatermelonAdrenaline Shoc	300 mg	88	Price for Adrenaline Shoc Watermelon
3	Reign Inferno Watermelon WarlordReign	300 mg	87	Price for Reign Inferno Watermelon Warlord
4	C4 Watermelon BurstC4	200 mg	83	Price for C4 Watermelon Burst
5	C4 Strawberry Watermelon IceC4	200 mg	82	Price for C4 Strawberry Watermelon Ice
6	CELSIUS Sparkling WatermelonCelsius	200 mg	82	Price for CELSIUS Sparkling Watermelon
7	Red Bull Red Edition WatermelonRed Bull	114 mg	70	Price for Red Bull Red Edition Watermelon
8	Gatorade Fast Twitch Strawberry WatermelonGatorade	200 mg	69	Price for Gatorade Fast Twitch Strawberry Watermelon
9	Monster Ultra WatermelonMonster	150 mg	65	Price for Monster Ultra Watermelon
10	Triton Salted WatermelonTriton	200 mg	62	Price for Triton Salted Watermelon

Drinks are matched by the flavor named on the can, not by our tasting notes.

PRIME
1. PRIME Energy Drink Strawberry Watermelon

Shark Score 90
- 200 mg caffeine
- 12 oz can
- 16.7 mg/oz
- Zero sugar
- Elite
“The strawberry watermelon combination tastes like summer in a can.”Jared

Read the review Check price for PRIME Energy Drink Strawberry Watermelon (opens in a new tab)
Adrenaline Shoc
2. Adrenaline Shoc Watermelon

Shark Score 88
- 300 mg caffeine
- 16 oz can
- 18.8 mg/oz
- Excellent
“The best watermelon flavor out there. Highly recommended to everyone. Strong kick, delicious flavor, and overall incredible energy drink.”Cam

Read the review Check price for Adrenaline Shoc Watermelon (opens in a new tab)
Reign
3. Reign Inferno Watermelon Warlord

Shark Score 87
- 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

Read the review Check price for Reign Inferno Watermelon Warlord (opens in a new tab)
C4
4. C4 Watermelon Burst

Shark Score 83
- 200 mg caffeine
- 16 oz can
- 12.5 mg/oz
- Zero sugar
- Excellent
“I like the simple, juicy watermelon flavor that Watermelon Burst has to offer. It’s refreshing and highly re-drinkable.”Jared

Read the review Check price for C4 Watermelon Burst (opens in a new tab)
C4
5. C4 Strawberry Watermelon Ice

Shark Score 82
- 200 mg caffeine
- 16 oz can
- 12.5 mg/oz
- Zero sugar
- Excellent
“C4 formula and energy blend + a tasty fruit combination = a must try energy drink.”Jared

Read the review Check price for C4 Strawberry Watermelon Ice (opens in a new tab)
Celsius
6. CELSIUS Sparkling Watermelon

Shark Score 82
- 200 mg caffeine
- 12 oz can
- 16.7 mg/oz
- Zero sugar
- Excellent
“Tastes like Propel but with caffeine! Great for anyone who’s into seltzers or sparkling waters.”Jared

Read the review Check price for CELSIUS Sparkling Watermelon (opens in a new tab)
Red Bull
7. Red Bull Red Edition Watermelon

Shark Score 70
- 114 mg caffeine
- 12 oz can
- 9.5 mg/oz
- Enjoyable
“It is a departure from the original Red Bull both in flavor and appearance, but that isn’t necessarily a bad thing”Matt

Read the review Check price for Red Bull Red Edition Watermelon (opens in a new tab)
Gatorade
8. Gatorade Fast Twitch Strawberry Watermelon

Shark Score 69
- 200 mg caffeine
- 12 oz can
- 16.7 mg/oz
- Zero sugar
- Decent
“Like a strawberry Danimals smoothie with a slight hint of watermelon.”Cam

Read the review Check price for Gatorade Fast Twitch Strawberry Watermelon (opens in a new tab)
Monster
9. Monster Ultra Watermelon

Shark Score 65
- 150 mg caffeine
- 16 oz can
- 9.4 mg/oz
- Zero sugar
- Decent
“An average energy drink that is inferior to all the other Ultras. The sour watermelon flavor is enjoyable to some, but I would not go out of my way to acquire this beverage.”Cam

Read the review Check price for Monster Ultra Watermelon (opens in a new tab)
Triton
10. Triton Salted Watermelon

Shark Score 62
- 200 mg caffeine
- 16 oz can
- 12.5 mg/oz
- Decent
“Sugary watermelon gummies but with a salty aftertaste.”Jared

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RIOT
11. RIOT Energy Cherry Watermelon

Shark Score 61
- 160 mg caffeine
- 16 oz can
- 10 mg/oz
- Decent
“Decent taste for zero added sugar or sweeteners. But too much going on in the flavor profile with cherry, watermelon, and green tea.”Jared

Read the review Check price for RIOT Energy Cherry Watermelon (opens in a new tab)

Questions

What is the best watermelon energy drink?

By Shark Score, the best watermelon energy drink we've rated is PRIME Energy Drink Strawberry Watermelon (90), followed by Adrenaline Shoc Watermelon (88) and Reign Inferno Watermelon Warlord (87).

What is the best sugar-free watermelon energy drink?

PRIME Energy Drink Strawberry Watermelon (90) is the top-rated zero-sugar watermelon drink on this list. 7 of the 11 are sugar-free.

Which watermelon energy drink has the most caffeine?

Adrenaline Shoc Watermelon, with 300 mg per 16 fl oz can. See every drink by caffeine in our caffeine chart.

How did you pick these?

Every drink we've rated with watermelon in its flavor name and at least 40 mg of caffeine, ranked by Shark Score. Drinks that are no longer sold are left out. Scores blend the Sharks' reviews with reader ratings; see how we score.