Cellucor C4 Performance Energy Drink | Cosmic Rainbow | Zero Sugar Carbonated Preworkout Energy | 200mg Caffeine with Beta Alanine | 16 Fl Oz (12 Pack), Packaging May Vary | ⭐ Flexiology.Store Recommended
Original price was: $27.99.$22.99Current price is: $22.99.
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Price: $27.99 - $22.99
(as of Oct 05, 2025 21:05:12 UTC – Details)
WARNING: C4 Performance Energy® is made for athletes.Whether you’re battling for rings or playing for pride, C4 Performance Energy® contains clinically studied ingredients that enhance performance at every stage of the game. Each can is powered by 200mg of caffeine and CarnoSyn® Beta-Alanine for explosive energy and enhanced endurance.*
Side effects may include shattered PRs and total confidence that your product is free of sugar, artificial colors, and 290+ banned substances. Drink at your own risk of excellence.
Product Dimensions : 10 x 9 x 6 inches; 13.2 Pounds
Item model number : 111146
UPC : 842595121780
Manufacturer : Nutrabolt
ASIN : B09RGKQW2L
Units : 192 Fluid Ounces
Best Sellers Rank: #27 in Grocery & Gourmet Food (See Top 100 in Grocery & Gourmet Food) #8 in Energy Drinks
Customer Reviews: 4.6 4.6 out of 5 stars 27,769 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
ENERGY TO OUTPERFORM – Formulated with 200mg Caffeine to support explosive energy and physical performance when you need it most whether it’s in the gym, on the field, in your home, or wherever your fitness journey may take you
INCREASE REP COUNT and HYDRATION – Formulated with CarnoSyn Beta-Alanine, a premium clinically studied beta-alanine, studied to support muscular endurance and fight fatigue, and BetaPower Natural Betaine that supports muscle cell hydration and physical performance
INCREDIBLE FLAVOR – Enjoy fruity Rainbow Candy flavor with zero sugar or carbs with no artificial colors or dyes.
NEW Cosmic Rainbow flavor, you get your candy fix with zero sugar, zero carbs, and no artificial colors or dyes. Now that’s a fruity, and delicious way to outperform and overachieve.
PACKAGING MAY VARY: Old Flavor Version is “Skittles” and New Flavor Version is “Cosmic Rainbow”
Customers say
Customers love this energy drink’s taste, noting it’s not overly sweet, and appreciate its strong burst of energy that keeps them going throughout the day. The drink receives positive feedback for its caffeine content, with a solid dose that doesn’t overload customers, and its zero-sugar formula helps avoid sugar crashes. Customers find it effective for workouts, particularly for gym performance, and consider it good value for money, with one customer describing it as a “party for your taste buds.”
🌿 Expert Tip: Selected by our Flexiology Experts for quality & value.
⚠️ Disclaimer: Information is for educational purposes and not a substitute for medical advice. Consult your physician before use. Flexiology.Store is not responsible for any adverse effects.
10 reviews for Cellucor C4 Performance Energy Drink | Cosmic Rainbow | Zero Sugar Carbonated Preworkout Energy | 200mg Caffeine with Beta Alanine | 16 Fl Oz (12 Pack), Packaging May Vary
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Alesialynette –
Great flavor and great energy!
If you’re on the lookout for a delicious energy boost, C4’s Cosmic Rainbow flavor is definitely worth a try! This zero sugar drink manages to hit the sweet spot without being overly sweet, making it perfect for those who want a tasty pick-me-up without all the sugar guilt. You’d never guess it’s sugar-free!The flavor is a delightful medley of fruity goodness, reminiscent of a fun summer day. Each sip is like a carnival for your taste buds, with a vibrant blend that really showcases all the fruity flavors. It’s playful and refreshing, making it a joy to drink whether you’re gearing up for a workout or just need a little extra energy to power through your day.What I love about Cosmic Rainbow is that it’s not just for gym-goers; it’s great anytime you need a burst of energy. The balance of flavors keeps things exciting, and it’s definitely a drink you’ll want to keep on hand for those moments when you need an extra kick.Alongside its delicious flavor, C4 Cosmic Rainbow also packs a punch with its impressive ingredient lineup. This energy drink is formulated with key components designed to boost your performance and energy levels without the crash that often comes with sugary alternatives. One of the standout ingredients is **Beta-Alanine**, known for enhancing endurance and reducing fatigue during workouts. Plus, there’s **Caffeine Anhydrous**, providing that much-needed energy boost to help power through your day or gym session.C4 also includes **Citrulline Malate**, which may help improve blood flow and enhance performance, making it a great choice for pre-workout fuel. On top of that, it’s fortified with vitamins like B3, B6, and B12, contributing to overall energy metabolism and keeping you feeling vibrant.What’s even better is that all of this comes without sugar, artificial colors, or preservatives often found in energy drinks. So, you can enjoy the fun and fruity taste of Cosmic Rainbow while fueling your body with quality ingredients. It’s the perfect blend of fun flavor and functional energy—ideal for anyone looking to boost their day in a tasty way!
Suki –
Worth the try, worth the purchase
I purchased the Cosmic Rainbow flavor C4 Performance Energy Drink. It has Zero Sugar which was very important for me when searching for the perfect energy drink. There is NO Sodium, and, 200mg of Caffeine. The taste of these is literally Skittles in a can but perfectly made to not be overwhelmingly sweet, I am amazed at how they managed to create such a perfect taste with no sugar. Does it actually give me energy? YES. Can I focus with this? Yes, drinking this helps me lock in. Without a doubt, whenever I am not able to muster up the energy myself these save me and get me going. I am not the type to chug an energy drink so my experience with it has been great, no shakes, no crazy increased heart rate, and NO CRASH. Im not sure if they have this flavor with a resealable lid but for someone like me, that likes to take my time drinking energy drinks, that would be a game changer! When I’m drinking this to workout I will drink it while I workout to keep the energy coming (not that the energy isn’t consistent, it is). I noticed that versus other energy drinks the effect of this one lasted the longest and my energy slowly wore off throughout the day, the way natural energy should/would. Whether you’re working out, running errands, at the office, or, just simply trying to make it through the day this energy drink is the answer for the days you can’t find the energy yourself or even just need an extra kick.
John –
Fuel That Tastes as Good as It Performs!
If you’re looking for an energy drink that actually delivers on both flavor and function, C4 Energy is a solid pick. Unlike some other options that taste like a chemistry experiment gone wrong, C4 comes in a variety of flavors that are genuinely enjoyable, refreshing, and not overly sweet.Performance-wise, it packs a punch. Whether you’re hitting the gym, powering through a long day, or just need a boost to stay sharp, C4 gives you that clean, focused energy without the jittery crash..Pros:• Great taste across multiple flavors• Effective energy boost• No crash or jitters• Ideal for workouts or busy days
Usually Don’t Review –
Terrific flavor & adequate energy boost
Love the C4’s. Most have 200mg caffeine. So they’re my mid range pick me up LOLThis is horrible – but I use my fave flavor of Monster when I only need a little – those are 160mg.But if I really need a pick me up- & even C4 won’t get it- I use Reign at 300mgBut these C4’s do give good energy, they’re effective at what they’re meant for. I don’t experience any jitteriness. And I do love this flavor, as well as I believed the C4 might be midnight cherry? Not sure but I order those plus these C4’s the cherry/limeade I believe. Delicious. & I’m told made in WI. Like me. 😁
Nessa –
Great pre workout
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!
Soma_685 –
I have tasted 7 different flavours and this one is my favourite so far.
Jake McGee –
Not the best flavour – very artificial and difficult to pin down. The boost of energy is great but you can get that with any drink and so this was more to try the flavour. It’s certainly drinkable but doesn’t quite give that slushy flavour I was imagining.
Vicki H –
amazing for a pre workout. Gives you a boost and what you need.
WMW –
Amazing flavour. C4 keep bringing out more and more great stuff
Jake McGee –
It does actually say on the can that there’s no skittles in the product. The fact that it’s just generic skittles flavour too is a little bit of a red flag. It just generally tastes sweet and vaguely berry/fruity flavoured.This being said, I love C4 energy drinks and always enjoy trying a new flavour to keep me going through a long shift and found this to be a fun one to enjoy. People frequently were interested and asking me about this at work so I think it markets itself well.I think if it’s on a reduced price it’s probably worth a purchase and try.