C4 Ultimate Energy Drink Zero Sugar — Sour Blue Razzilla 16oz (300mg Caffeine, Pack of 12)

C4 Ultimate Energy Drink with Zero Sugar delivers a potent 300mg caffeine boost in a 16oz can, featuring the limited-edition Sour Blue Razzilla flavor from the C4 x Godzilla collaboration.

This high-caffeine energy drink pairs intense alertness with a bold sour-blue-raspberry taste designed for moments when you need a decisive pick-me-up. Each 16oz can contains zero sugar and is formulated for people seeking long-lasting stimulation without added calories. The redesign updates the look and feel while keeping performance-forward ingredients and a blast of tart, fruity flavor inspired by the Godzilla partnership.

How strong is the caffeine kick and when should I drink it?

Each can provides 300mg of caffeine, which is a high dose intended for experienced caffeine users or those needing intense, focused energy. Avoid combining with other high-caffeine products and consider timing so sleep isn’t disrupted. Not recommended for children, pregnant women, or those sensitive to stimulants.

• 300mg caffeine per 16oz can
• Zero sugar to avoid added calories
• Best used for long work sessions, intense study, or extended training days

What does Sour Blue Razzilla taste like and who will like it?

Sour Blue Razzilla blends sharp tartness with berry-sweet notes to create a bright, electrifying profile. It’s crafted for fans of sour candy and bold flavored energy drinks who want flavor without sweetness from sugar. The Godzilla collaboration delivers a playful, larger-than-life flavor identity.

• Electric sour-berry front notes
• Balanced berry sweetness on the finish
• Zero-sugar formulation preserves flavor without added calories

What other functional ingredients are included and what do they do?

Beyond caffeine, the formula includes nutrients commonly used in energy products to support mental alertness and metabolic processes. The beverage contains vitamin B12 and additional ingredients to help maintain focus and stamina during demanding activities. Ingredient lists vary by region; always read the label for a full breakdown.

• Vitamin B12 included, associated with energy metabolism support
• Performance-oriented blend aimed at focus and drive
• Zero artificial colors in this flavor profile

How should I store and consume C4 Ultimate Energy?

Store cans in a cool, dry place away from direct sunlight and extreme heat to preserve flavor and carbonation. Consume cold for best taste and pacing: sip over time rather than drinking the entire can at once, especially if you’re sensitive to stimulants. Dispose of cans responsibly according to local recycling rules.

• Keep refrigerated for optimal refreshment
• Do not mix with alcohol or other stimulants
• Follow label warnings about recommended daily caffeine limits

Who is this for: C4 Ultimate Energy Drink 16oz in Sour Blue Razzilla is designed for adults who regularly use high-strength energy beverages—athletes during long sessions, shift workers needing sustained alertness, students facing extended study periods, or anyone who prefers bold, sour-berry flavors without sugar. If you’re caffeine-sensitive, pregnant, or under 18, consider lower-caffeine options instead. The 12-can pack suits people who want to stock up for training cycles, events, or busy weeks.

Ingredients

Carbonated Water, Citric Acid, Taurine, Sodium Citrate, Natural & Artificial Flavors, Tartaric Acid, Caffeine Anhydrous, Potassium Benzoate (preservative), Sucralose, Acesulfame Potassium, Niacinamide, Dynamine™ (Methylliberine), Teacrine® (Theacrine), Cyanocobalamin (Vitamin B12))