How much caffeine is in C4 Ultimate Knockout Nectarine Guava?

C4 Ultimate Knockout Nectarine Guava by Cellucor contains 300mg of caffeine per can.

Is C4 Ultimate Knockout Nectarine Guava sugar-free?

Yes, C4 Ultimate Knockout Nectarine Guava is sugar-free.

How many calories are in C4 Ultimate Knockout Nectarine Guava?

C4 Ultimate Knockout Nectarine Guava has 0 calories per can.

How does the caffeine in C4 Ultimate Knockout Nectarine Guava 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 C4 Ultimate Knockout Nectarine Guava have more caffeine than a cup of coffee?

Yes. At 300 mg, C4 Ultimate Knockout Nectarine Guava 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).

What sweetens C4 Ultimate Knockout Nectarine Guava?

Sweetened with Sucralose and Acesulfame Potassium.

Cellucor

C4 Ultimate Knockout Nectarine Guava

Availability last checked Oct 5, 2026

300mgMore caffeine than 83% of the drinks we track

performanceSugar-free

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

How it compares

vs. 919 drinks

Caffeine: 300mg
Sugar: 0g
Calories: 0

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

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Ingredients & nutrition facts

Carbonated Water
Taurine
Malic Acid
Citric Acid
Caffeine Anhydrous
Potassium Benzoate (Preservative)
Sucralose
Natural & Artificial Flavor
Niacinamide
Acesulfame Potassium
Dynamine (Methylliberine)
Teacrine (Theacrine)
Cyanocobalamin (Vitamin B12)

Label not yet re-checked

Frequently asked questions

How much caffeine is in C4 Ultimate Knockout Nectarine Guava?: C4 Ultimate Knockout Nectarine Guava by Cellucor contains 300mg of caffeine per can.
Is C4 Ultimate Knockout Nectarine Guava sugar-free?: Yes, C4 Ultimate Knockout Nectarine Guava is sugar-free.
How many calories are in C4 Ultimate Knockout Nectarine Guava?: C4 Ultimate Knockout Nectarine Guava has 0 calories per can.
How does the caffeine in C4 Ultimate Knockout Nectarine Guava 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 C4 Ultimate Knockout Nectarine Guava have more caffeine than a cup of coffee?: Yes. At 300 mg, C4 Ultimate Knockout Nectarine Guava 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).
What sweetens C4 Ultimate Knockout Nectarine Guava?: Sweetened with Sucralose and Acesulfame Potassium.