CellucorC4 Performance Energy Drink | Cosmic Rainbow | Zero Sugar Carbonated Preworkout Energy | 200mg Caffeine with Beta Alanine | 16 Fl Oz (12 Pack), Packaging May Vary

Absolutely love this drink! The Cosmic Rainbow flavor is refreshing and not too sweet. It gives a clean burst of energy that kicks in fast and helps me power through workouts or long days — without the jitters or crash. Zero sugar and 200mg of caffeine make it a perfect pre-workout or pick-me-up. Definitely one of the best energy drinks I’ve tried. Highly recommend!

Great flavor and clean energy! The Cosmic Rainbow C4 gives a solid kick with 200mg of caffeine and no sugar. Perfect for workouts or a midday pick-me-up. No crash, just focus and endurance. Love the fizz too!

The Skittles flavor is actually really good like, dangerously good. I wasn’t sure what to expect, but it’s sweet in a fun way without being over the top. It legit tastes like candy but gives you a clean energy boost. No jitters, no crash, just a nice pick-me-up. If you’re even slightly curious, I’d say try it. I was surprised by how much I liked it.

Why did you pick this product vs others?:I’ve been using C4 Pre-Workout, and it’s become a staple in my fitness routine. Whether I’m doing weight training or cardio, it gives me a noticeable boost in energy, focus, and endurance — without feeling jittery or getting a crash afterward.The flavor I tried (Fruit Punch) tastes surprisingly good — not too sweet or artificial, and it mixes well with water. I usually take it about 20–30 minutes before my workout, and by the time I hit the gym, I feel ready to push harder.The beta-alanine tingles are real, especially if you’re new to pre-workouts, but they wear off quickly and don’t bother me. I also appreciate that it doesn’t overload you with caffeine like some other products do — it’s a clean, focused energy that helps with performance without making you feel wired.Whether you’re just starting your fitness journey or looking for a reliable pre-workout to get more out of your sessions, C4 delivers. Just be sure to follow the serving instructions and stay hydrated!

C4 Pre-Workout is one of the most popular pre-workout supplements on the market, designed to boost your energy, focus, and performance during exercise. It contains ingredients like caffeine, beta-alanine, and creatine nitrate that help improve endurance, delay muscle fatigue, and increase mental clarity. Typically taken 20-30 minutes before working out, mixed with water, it comes in various flavors. It’s ideal for those looking for an extra boost in their gym or sports routine but is not recommended for people sensitive to caffeine or with heart conditions. Starting with half a dose is advised to assess tolerance.

Super sweet in my opinion, but works great. C4 gets me amped when I need an energy drink to keep me focused during the day. The can size is big and well worth the price

I drink C4 Performance Energy before workouts or when I feel super low on energy. Each can has 200mg of caffeine, and you really feel it kick in. The Cosmic Rainbow flavor is fruity and sweet, but not overly sugary or artificial.It’s fizzy, sugar-free, and doesn’t leave a weird aftertaste. Just don’t drink it on an empty stomach. For me, it works well—especially when I need that extra push before a workout or busy day.

I work out daily and C4 Performance Energy has become my go-to pre-workout drink. Love the flavor and find it super refreshing. It gives me a clean energy boost without the jitters or crash, which is huge. Definitely helps me power through my workouts, especially on days when I’m feeling low energy. Solid product, I keep a few in the fridge at all times.