C4 Original Pre Workout – For Endurance, Focus & Performance with 200mg Caffeine, Beta-Alanine, Creatine Nitrate, L-Arginine & PeptiPump – Sugar Free, 30 Servings, Hawaiian Punch Fruit Juicy Red

Always the best product. Very tasty and energizing.

I am an OG C4 drinker. I've been using this product since 2010: first for fitness and athleticism goals while in the infantry, then going to college where my focus was bodybuilding and aesthetics, and now in my 30's where my focus is powerlifting, strength, and longevity. Yes, I remember the old formulation that made you want to leap out of your skin. This product has changed over the years, but it is still great, and it has been there no matter what my goals have been. I've tried all the major brands, and I keep coming back to C4 Original. I encourage everyone to try the others on their fitness journey, but C4 is the standard that I compare everything to. A reliable, well-rounded pre-workout.

This exceptional beverage provides the optimal energy boost required for my workout sessions at the gym.thanjs

I discovered C4 at my local gym. I had one, and for the first time in a while, I managed to go through my entire full-body workout without losing focus. When I finished, three hours had passed, I had done six rounds of every set, and I still had the energy to do more. My main trouble is focusing; I'm easily distracted or bored by repetitive tasks. C4 has become a staple of my daily workout routine. Its benefits aren't only for the gym, either—at work, it helps a lot with my ADHD. I have more focus, get more work done without distractions, and finish in less time.

I've been using C4 for years now whether at the gym, surfing or going out to do yard work. It's the only pre-workout I trust and use. I never get the jitters or post crash and tbh C4 has kinda saved my life in some ways. It's get me going and moving in times when I don't want to and I just want to give up. C4 Blue is Goated!

Does not taste like Original C4 in the yellow container.

Honestly such a let down you guys made a new formula. The c4 before this was fine perfect amount of caffeine & none of the aminos that classify as nootropics. I've got adhd and use medication & anxiety went through the roof after using it due to the l tyrosine you've added into it & what ever else.The c4 before was mild & got nothing but a clean boost in energy & never interfered with my medication. Such a let down these supplement companies are trying to cash in on the brain stimulation supplements

This is not good at all. First of all your body will heavily be dehydrated. Your eyes will keep unrested and sleep will be blown away. Don't recommend at all.

I just got an order of the new formula ( Dec.2025) in its smaller 50 serve format. So the formula has actually been changed. Not just marketing hype. Now it tastes rubbish, costs more & has fewer serves. Can you say shrinkflation

Long time user. Allergic to lentils added in new formula. So time to find a new pre work out product. It is crazy even C4 is using AI as a selling point. AI is garbage.