C4 Ultimate Shred Pre Workout, Thermogenic, ICY Blue Razz, 20 Servings | 300mg caffeine, TeaCrine, Dynamine & cayenne extract for energy and thermogenic support.

I’ve been using pre-workouts for the better part of two decades — everything from the old-school “chalky rocket fuel” formulas to the newer designer blends — and I can honestly say that C4 Ultimate Shred has earned a permanent place in my rotation. This stuff is on an entirely different level when it comes to clean energy, focus, thermogenic intensity, and overall workout performance.First off, the energy is absolutely phenomenal. Not jittery, not sloppy, not the kind that has you staring at the wall wondering why your heart is vibrating. The combination of caffeine, TeaCrine, and Dynamine creates this incredibly smooth but powerful surge of energy that kicks in fast and stays consistent through the entire workout. I train early mornings, and this has completely replaced coffee for me. About 20 minutes after taking it, you feel switched on mentally and physically — laser focus, elevated mood, and real motivation to push harder.The thermogenic effect is VERY real. If you’re sensitive to heat-producing supplements, be prepared to sweat. Within one workout I noticed a serious increase in body heat and perspiration, especially during cardio circuits and high-volume lifting. Honestly, I love that feeling because it makes the workout feel productive and intense. The cayenne extract and metabolism-focused ingredients definitely aren’t just marketing filler.Performance-wise, this delivers exactly what a premium pre-workout should. The pumps are incredible thanks to the citrulline and arginine blend, and the endurance boost is noticeable halfway through training when most products start fading. I found myself adding extra sets simply because I still had fuel in the tank. No crash afterward either, which surprised me considering the stimulant profile.Now let’s talk flavor — because most fat-burning pre-workouts taste like chemical punishment. The Icy Blue Razz flavor is shockingly good. Smooth, refreshing, slightly tart, and easy to drink even first thing in the morning. No weird aftertaste, no overly artificial sweetness, and it mixes extremely well with zero clumping.Another thing I appreciate is that this formula feels designed for people who actually train hard. This isn’t some watered-down beginner supplement. It’s potent, focused, and performance-driven. You can tell there was real thought put into balancing energy, endurance, thermogenesis, and mental clarity into one formula instead of overloading one area and neglecting the others.A few quick things worth mentioning:Excellent mixabilityNo bloating or stomach discomfortStrong appetite suppression effectKeeps motivation high during long workoutsGreat for both lifting and cardio daysWorks especially well during calorie deficitsIf you’re brand new to high-stim pre-workouts, I’d recommend starting with half a scoop because this is powerful stuff. But for experienced gym-goers who want intense workouts, better focus, serious sweat, and long-lasting energy, this is easily one of the best formulas I’ve used in years.Absolutely a 5-star product in my book. C4 knocked this one out of the park.

I have been taking Preworkout supplements for a number of years now. The majority of those years, I have been taking this specific product.For the last few months I have been taking another very powerful preworkout. I loved the taste of the other one, so I used it for about 3 months. It worked good, but decent. Very light effect...that effect you look for in a Preworkout sup. It seems as though I built a tolerance to the one I've been using for a few months.Long story short, This C4 Shred purchase was the first I've made since using the other brand, and whooo Doggie!!! It is powerful!!Thanks Cellucor 💪Cons:• Flavor is too sharp (Blue). Almost like drinking flavored syrup when mixed with a regular 16.9 bottle of water. If you can get past that intense flavor you'll love what happens in 15-20 mins. It would be nice if Cellucor would use less blue coloring and less amount of flavor.• You have to drink lots of water for roughly the next 2-3 hours after consumption.Every person's body is different, and everyones tolerance can fluctuate...but what I have learned with this specific product for myself, is that I have to hydrate more frequently during and after my excersize. I see this as a con because taking a small jug to the gym, or a few water bottles is a hassle.• Small variety of flavors. For the 4+ years or so I have been using Shred, There has been only a few flavors, and I hate them all 🤭It would be nice to have a Tropical and/or Fruit punch flavor included for the Shred series.💙

This is the best pre-workout supplement, it’s great taste and fast kick in makes it a great product! The size of the container for the cost is fair compared to most on the market. It’s a stronger pre-workout than most and may cause some symptoms, I only take a half serving due to the strength so the container last me a while.

I've been using c4 ultimate for a years. Still best overall pre-work out I've been able to test, that's why I keep coming back to it. After time, does seem like I've built quite a tolerance to it, and while tempted to take more than recommended, I still take it as recommended and get my workouts going!! That's the only reason I don't rate as 5, the first few months I used this, I definitely felt it hit harder.

Great Product! I prefer the yellow shredder version as it truly provides the needed punch, shreds unwanted weight and tastes decent 😁

Really high octane pre-workout powder. 300 mg caffeine will supercharge your workout. I used less than recommended until I got used to the effect. I use it all the time now. I like to mix with power beets superfood for optimum energy.

Take half and gauge how much you need. My heart and skin tingles are through the roof at 3/4 scoop. Also, it’s making my stomach acid off making me feel soooo hungry! Going back to my previous purchase of the cellular c4 ripped sport pre-workout powder fruit punch. This one is one level too high for my heart! 37 yrs old 21 bmi

Received late but by a day. Sealed. As described. Love the product. Happy to have it.