C4 Purple Frost

C4 Purple Frost

No longer sold

SHARK SCORE · ENJOYABLE · SHARK SCORE · ENJOYABLE · 73

Enjoyable · A solid grab.

Ranked #141 of 267 drinks · #8 of 8 C4

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200 mgCaffeine
16 ozCan size
12.5mg per oz · Strong

No longer sold. The button goes to a similar drink that's still on shelves: C4 Strawberry Watermelon Ice. See every discontinued drink.

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The Sharks’ verdict

Each category is scored 0–10; Overall is its own call, not an average.

Look6/10
Taste6.7/10
Kick9.5/10
Overall7.3/10
JaredReviewed Jun 29, 2021
7.3/10
“An excellent grape soda with 200mg of caffeine.”
Look6
Taste6.7
Kick9.5
Overall7.3

Jared’s full review

Introduction

After a short vacation/hiatus (where don’t worry, my caffeine addiction only grew) I’m back on the energy drink review grind, this time with C4 Purple Frost. It’s been sitting in my fridge for a bit since grape, which I assume Purple Frost alludes to, has never been a go to fruit or flavor for me. The bar is pretty high though, after being impressed with every other C4 I’ve had. Let’s get into it.

Appearance

New C4 “Superhuman” can design is slick. Bumblebee colors with the purple banner at the top and clean lines. The main elements of the drink advertised are CARNOSYN and BETAPOWER, which mean nothing to me off the bat, but fortunately C4 is way ahead of me.

On the side of the can they describe CARNOSYN as an improver of muscular endurance, and BETAPOWER as a natural superfood supporting hydration and physical performance.

Taste

I was correct, purple frost equals grape. I haven’t had grape fanta, or any grape soda for that matter, in a while, but I think that it’s a spot on comparison. Very similar carbonation to soda and has the classic artificial grape flavor. It goes down smooth and has a nice aftertaste, which is a good switch up from C4 Freedom Ice.

Kick

200mg of caffeine, 0 sugar, 0 calories. Doesn’t overly taste like artificial sweetener. Not sure what it is about C4 – I don’t want to believe the marketing with CARNOSYN, which says you may feel a tingling sensation from the beta-alanine – but it seems to hit me harder than other 200mg energy drinks. Maybe I’m getting soft?

Conclusion

All in all Purple Frost is an excellent grape soda with 200mg of caffeine. C4 didn’t try to do too much here, which I can respect. If you like grape, I definitely recommend it before a workout or some kind of physical activity, because it does get you going.

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C4 Purple Frost: quick answers

How much caffeine is in C4 Purple Frost?

C4 Purple Frost has 200 mg of caffeine in a 16 fl oz can (12.5 mg per fluid ounce). That's about as much as 2 cups of brewed coffee (8 oz each, about 95 mg per cup), 50% of the 400 mg a day the FDA cites for healthy adults. It ranks #70 for caffeine among the 267 drinks we've rated.

Is C4 Purple Frost sugar-free?

Yes. C4 Purple Frost is a zero-sugar drink. Formulas change, so check the can's nutrition panel if sugar matters to you.

Is C4 Purple Frost good?

The Sharks give C4 Purple Frost a Shark Score of 73 (Enjoyable: “A solid grab.”), ranking it #141 of 267. The short version: “An excellent grape soda with 200mg of caffeine.”

What is the best C4 Energy flavor?

Of the 8 C4 Energy drinks we've rated, the best is C4 Black Cherry (92). C4 Purple Frost ranks #8. See every C4 Energy flavor ranked.

Is C4 Purple Frost discontinued?

Yes. Not in any C4 line on cellucor.com/collections/c4-energy (Oct 2026). The closest match you can buy is C4 Strawberry Watermelon Ice (82). See every discontinued energy drink we've rated.

More from C4

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Close in caffeine per ounce, also sugar-free, and scored near 73.

Caffeine chart