- ENERGY TO OVERACHIEVE – Formulated with 200mg of InnovaTea Naturally Derived Caffeine produced from tea leaves that delivers anytime energy and alertness. Conquer any task from work to play, gaming to studying, partying to planning to pre workout
- SUGAR-FREE BEVERAGE FOR MEN & WOMEN – Zero sugar, zero calories, and zero carbs in every delicious serving, with no artificial colors or dyes
- DELICIOUS FLAVORS UNLIKE ANYTHING ON THE MARKET – Icy Blue Razz, Black Cherry, Strawberry Guava, Tropical Passionfruit, Blood Orange Yuzu, Cherry Berry Lime, Watermelon Burst, and Peach Mango Nectar.
- C4 SUGAR-FREE ENERGY DRINK – America’s Number 1 Selling Pre-Workout Brand has been trusted since 2011 with over 2 billion servings sold
- PACKAGING MAY VARY* – New Look, Same C4 Smart Energy!
Energy Drink
Cellucor C4 Smart Energy Drink – Sugar Free Performance Fuel & Nootropic Brain Booster, Coffee Substitute or Alternative | Strawberry Guava 12 Oz – 12 Pack
Original price was: $22.49.$19.00Current price is: $19.00.
Disclosure| Brand | Cellucor |
|---|---|
| Item Form | Liquid |
| Flavor | Strawberry Guava |
| Diet Type | Gluten Free, Kosher, Vegan |
| Number of Items | 12 |
53 reviews for Cellucor C4 Smart Energy Drink – Sugar Free Performance Fuel & Nootropic Brain Booster, Coffee Substitute or Alternative | Strawberry Guava 12 Oz – 12 Pack
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خليفة ال علي –
I have tried so many flavours and so far this is the tastiest flavour , never get bored of it , and it make you workout for 3 hours non stop ! Unfortunately must of cans are half empty, so it’s a rip off!!!
Elizabeth Elizondo –
This C4 variety pack hits fast in the best way. The flavors are bright and clean, not that syrupy taste some energy drinks have. I usually grab a can when I’m trying to get moving in the morning or when I’m dragging between tasks, and the lift feels sharp without making me jittery. The Cherry Berry Lime and Blood Orange Yuzu are the ones I reach for the most because they taste like a quick splash of something refreshing instead of a heavy drink.
What stands out is how clear-headed it feels. I’ll crack one open before answering messages, sorting boxes, or doing anything that needs focus, and it gives just enough push to stay alert without feeling wired. It’s also clutch for long drives or late-night organizing sessions when you need your brain to stay awake but you don’t want coffee sitting heavy on your stomach.
Grabbing a can on the go is easy since they chill fast in the fridge. I’ve even tossed a few into my bag when I know I’ll be out running errands all day. The zero sugar thing helps too, especially if you’re someone who doesn’t like sugary drinks slowing you down. No weird aftertaste, no sticky sweetness, just a clean finish that makes you want to grab another flavor and keep moving.
With four different tropical mixes in the box, you don’t get bored. Each one has its own vibe, from peachy and smooth to citrusy and sharp. It’s nice having a mix that fits different moods, whether it’s studying, getting steps in, or prepping for a busy day.
This pack is one of those things you keep around because it fits into all kinds of routines. A quick boost when you need a lift, something refreshing when you want flavor, and a clean energy feel that doesn’t hit you sideways. It just works.
Ashok Kumar –
Carbonated
Adrienne Milligan –
My sister got me hooked on this ! They taste great & keep me going ! Decent price compared to others !
Adrienne Milligan –
This is my new go to energy drink. I am always interested in trying new energy drinks and comparing. Lately I’ve become concerned with the ingredients listed in most energy drinks on the market. C4 smart energy is a much cleaner and tasty alternative. I also love that this one is 0 calories. These are some of the best
Ashok Kumar –
Noticeable improvement in energy level and focus on the C4 Smart Energy version. Bought this for working on a critical project, had it in the morning after breakfast. I was able to avoid mental and physical fatigue and keep working for 10+ hours straight, with full on energy, focus and motivation, without needing any breaks/coffee/tea in between. Remember you can have only one per day and I believe its not recommended to use this continuously for more than 8 weeks. I intend to use this only when I have something critical to get done. Taste is very good (Peach Mango / Smart Energy)
Joseph Journet –
Order missing
9 only not 12 as specified and damaged
Drezden –
I was really surprised by how much I liked this. The caffeine content was enough to notice but not enough to cause a crash, the taste is good, and the packaging was great. Overall good quality and value.
Kimberly –
I’ve tried a lot of energy drinks over the years, but Cellucor C4 Performance and C4 Smart Energy are easily the best I’ve come across.
C4 Performance Energy Drink is my go-to pre-workout. It gives me a clean, intense boost that actually feels like it’s doing something without the crash or jitters. I feel more focused, more driven, and I can push harder in the gym. The BetaPower really makes a difference—I can feel it in my endurance and strength, especially during heavy lifts or cardio. And the flavors? Seriously good. Frozen Bombsicle is my favorite—it tastes like nostalgia and motivation in a can.
Then there’s C4 Smart Energy, which is a total lifesaver on my work days. I’m a nurse doing night shifts, so staying mentally sharp is non-negotiable. Smart Energy gives me that focus and clarity I need without making me feel wired. It’s smooth, tastes great, and I love that it’s zero sugar and packed with brain-boosting ingredients like Cognizin.
These two drinks have completely replaced coffee and most other energy drinks for me. Whether I need physical power or mental focus, C4 has something that works—and I actually look forward to drinking them.
HSTV –
I recently quit smoking and started cutting out sugar, so I’ve been looking for better ways to stay alert — especially in the mornings. I’m not naturally a morning person, but these drinks give me the boost I need for early meetings when coffee isn’t an option.
They taste great, give a clean surge of energy, and don’t feel heavy or fattening. No crash, no jitters. Just a solid pick-me-up that fits my new routine. Love these.
Drezden –
This is my new go to energy drink. I am always interested in trying new energy drinks and comparing. Lately I’ve become concerned with the ingredients listed in most energy drinks on the market. C4 smart energy is a much cleaner and tasty alternative. I also love that this one is 0 calories. These are some of the best
Brianna Winston –
Order missing
9 only not 12 as specified and damaged
Anon –
Tastes good! Not sure if the caffeine is doing anything to me since I consume a lot of it but the tastes good and def perfect to take to the gym! lol that it’s low calories!
riffster –
Carbonated
Esteban Rojas Rendon –
I’ve tried a lot of energy drinks over the years, but Cellucor C4 Performance and C4 Smart Energy are easily the best I’ve come across.
C4 Performance Energy Drink is my go-to pre-workout. It gives me a clean, intense boost that actually feels like it’s doing something without the crash or jitters. I feel more focused, more driven, and I can push harder in the gym. The BetaPower really makes a difference—I can feel it in my endurance and strength, especially during heavy lifts or cardio. And the flavors? Seriously good. Frozen Bombsicle is my favorite—it tastes like nostalgia and motivation in a can.
Then there’s C4 Smart Energy, which is a total lifesaver on my work days. I’m a nurse doing night shifts, so staying mentally sharp is non-negotiable. Smart Energy gives me that focus and clarity I need without making me feel wired. It’s smooth, tastes great, and I love that it’s zero sugar and packed with brain-boosting ingredients like Cognizin.
These two drinks have completely replaced coffee and most other energy drinks for me. Whether I need physical power or mental focus, C4 has something that works—and I actually look forward to drinking them.
Tracy –
Like the taste. 👅 Clear in color. Gives me the right amount of energy.
Only issue was the expiration date was within a few months. So I will not buy from this seller again.
Anon –
This was a pretty good variety pack, not my favorite C4s, but I’d drink them again mostly.
I like the fact that these were green tea derived and I found the taste of them to be refreshing and hydrating with no terrible aftertastes to be found thankfully, They have some decent healthy benefits with vitamins and such added.
Now a rundown of the flavors , and why I DIDN’T LOVE this one.
This variety pack comes with the flavors Cherry Berry Lime, Blue Raspberry, Black Cherry, and Watermelon Burst.
Cherry Berry Lime : This one was surprisingly good to me the combination sounded a little iffy to me , but it worked. You can definitely pick out all three elements cherry, berry ( black berry ?) and lime. The flavor wasn’t too strong.
Blue Raspberry: Usually my go to flavor , and the one I was most looking forward to, surprisingly however this was my second favorite flavor of the pack. It wasn’t bad at all don’t get me wrong It was good , just not the top dog , expect a lighter refreshing blue raspberry flavor with notes of green tea that aren’t too overpowering and mix well.
Black Cherry: The surprise winner of the four varieties, this one had a really good bold and crisp black cherry taste ! I actually made sure to save one for last , and was a little disappointed when it was gone. I didn’t think this one tasted much at all like green tea .
Watermelon Burst: In my opinion this one was just plain disgusting and really one of the only flavors of C4 energy drinks that I can honestly say I hate and never want to consume again…
It tasted like dirty watermelon water , very earthy and a bit bitter to me. The green tea may have overpowered this one or possibly the flavors just didn’t complement one another very well.
So there you have it three pretty decent drinks with a no crash energy boost , and one dud that I wouldn’t recommend to anyone.
This pack would benefit from dropping Watermelon Burst in my opinion , but hey everyone has different tastes so maybe this one would be winner to you .
Also if you LOVE GREEN TEA then you might not have any issues with any of the four flavors .
Alyssa Davis –
My sister got me hooked on this ! They taste great & keep me going ! Decent price compared to others !
Kaitlyn Bauer –
I have searched high and low for decent energy drinks that don’t make me wince, and I have struck gold. These taste so damn good, and if you drink this right before the gym I promise you your workout is going to be insane it makes me feel like I could workout for 5 hours with no fatigue im talking max incline light jog.
سلمان محمد رئيسي –
جودة العالية و تغليف كراتين بشكل محقن و ممتاز و سرعة توصيل ونظافة سيارة و مندوب
Ahmed –
Order missing
9 only not 12 as specified and damaged
سلمان محمد رئيسي –
Delicious, good energy, please bring more flavours to intl prime shipping.
Angela Snowden –
Favorite zero calorie drink. Helps with brain fog, focus, steady energy, digestion, has perfect combination of supplements (I am sensitive to b vitamins and a few others – make me very sick, tired etc), huge improvement with hormones, sleep and more. SG is my favorite flavor compared to the others. A game changer for my husband and I.
Amazon Customer –
Love C4 energy drinks! Cost is in line with most higher end energy drinks and it taste really good! look out for sales that pop up from time to time on these.
Syedh –
جودة العالية و تغليف كراتين بشكل محقن و ممتاز و سرعة توصيل ونظافة سيارة و مندوب
Syedh –
Noticeable improvement in energy level and focus on the C4 Smart Energy version. Bought this for working on a critical project, had it in the morning after breakfast. I was able to avoid mental and physical fatigue and keep working for 10+ hours straight, with full on energy, focus and motivation, without needing any breaks/coffee/tea in between. Remember you can have only one per day and I believe its not recommended to use this continuously for more than 8 weeks. I intend to use this only when I have something critical to get done. Taste is very good (Peach Mango / Smart Energy)
Michelle Lawton –
Tastes good! Not sure if the caffeine is doing anything to me since I consume a lot of it but the tastes good and def perfect to take to the gym! lol that it’s low calories!
Denisse Villar –
The media could not be loaded.
As someone who leads an active lifestyle, finding a pre-workout drink that aligns with my health goals can be a challenge. That’s why I was thrilled to discover the C4 Energy & Smart Energy Drinks Variety Pack. Let me tell you, these drinks have become my go-to fuel for all my workouts!
The variety pack comes with four delicious flavors, making it perfect for those who like to switch things up. From the refreshing Strawberry Watermelon Ice to the invigorating Sparkling Peach Mango, each flavor packs a punch and leaves me feeling energized and focused for my workouts.
One of the things I love most about these energy drinks is their versatility. Not only do they provide a much-needed energy boost before my workouts, but they also serve as a great coffee substitute or alternative. On those early mornings when I need a pick-me-up, I can reach for one of these drinks instead of a cup of coffee, and I still get the energy I need without the jitters or crash later on.
The fact that these drinks are sugar-free is a huge plus for me. I appreciate that I can enjoy the taste without worrying about consuming unnecessary calories or compromising my health goals. The absence of artificial colors or dyes is another great feature, as it gives me peace of mind knowing that I’m putting only quality ingredients into my body.
The 12-pack variety pack is not only convenient but also a great value for money. I can easily grab a can whenever I need a quick energy boost, whether it’s during a workout or a busy day at work.
Overall, I highly recommend the C4 Energy & Smart Energy Drinks Variety Pack to anyone looking for a reliable and healthy way to stay energized throughout the day. With its variety of flavors, zero calories, and no artificial colors or dyes, this pack is a winner in my book. Give it a try and experience the difference for yourself!
Ahmed –
Noticeable improvement in energy level and focus on the C4 Smart Energy version. Bought this for working on a critical project, had it in the morning after breakfast. I was able to avoid mental and physical fatigue and keep working for 10+ hours straight, with full on energy, focus and motivation, without needing any breaks/coffee/tea in between. Remember you can have only one per day and I believe its not recommended to use this continuously for more than 8 weeks. I intend to use this only when I have something critical to get done. Taste is very good (Peach Mango / Smart Energy)
Michelle Lawton –
C4 Smart Energy is a functional energy drink that delivers a solid boost without the jittery side effects common in high-caffeine beverages. It contains 200mg of caffeine from natural sources and includes ingredients like Cognizin® Citicoline, which is marketed to support mental focus. The drink is sugar-free and low in calories, which makes it a good option for people watching their diet or trying to avoid crashes from sugar-loaded drinks.
The flavor is surprisingly clean and not overly sweet, with options like Peach Mango, Frozen Bombsicle, and Cherry Limeade. It doesn’t have the harsh aftertaste some energy drinks do. I noticed a noticeable increase in alertness and focus about 20 minutes after drinking it, which lasted a few hours. Overall, C4 Smart Energy is a solid choice for students, gamers, or professionals who need a mental boost without the downsides of sugary or overly aggressive energy drinks.
Denisse Villar –
I’ve tried a lot of energy drinks over the years, but Cellucor C4 Performance and C4 Smart Energy are easily the best I’ve come across.
C4 Performance Energy Drink is my go-to pre-workout. It gives me a clean, intense boost that actually feels like it’s doing something without the crash or jitters. I feel more focused, more driven, and I can push harder in the gym. The BetaPower really makes a difference—I can feel it in my endurance and strength, especially during heavy lifts or cardio. And the flavors? Seriously good. Frozen Bombsicle is my favorite—it tastes like nostalgia and motivation in a can.
Then there’s C4 Smart Energy, which is a total lifesaver on my work days. I’m a nurse doing night shifts, so staying mentally sharp is non-negotiable. Smart Energy gives me that focus and clarity I need without making me feel wired. It’s smooth, tastes great, and I love that it’s zero sugar and packed with brain-boosting ingredients like Cognizin.
These two drinks have completely replaced coffee and most other energy drinks for me. Whether I need physical power or mental focus, C4 has something that works—and I actually look forward to drinking them.
ShawnReviews –
Good quality & cheaper than my local store.
Syedh –
Delicious, good energy, please bring more flavours to intl prime shipping.
KEVIN RUPP –
Good taste
Frank S. –
Been using this for a long time. Can’t beat it. Price wise, great also
Alyssa Davis –
This is the best energy drink that I’ve ever had. No alkaline taste like Red Bull, and doesn’t ever feel like my heart is going to pop out of my chest. It’s light and tasty and works great.
Alyssa Davis –
I was really surprised by how much I liked this. The caffeine content was enough to notice but not enough to cause a crash, the taste is good, and the packaging was great. Overall good quality and value.
Katey Temple –
Taste was okay. Not the best c4 flavor still was okay though, but did the job!
Stephanie Kjerstad –
Sugar free, healthy ingredients and tastes great!
Brianna Winston –
Carbonated
Drezden –
Great taste, great energy, and just the right size cans. I love it. I will definitely purchase again. 5 stars 🌟 👍🙂
Denisse Villar –
This are probably my favorite energy drink and is a great price. They are loaded with a bunch of good vitamins and natural stuff and the flavor is amazing no nasty after taste and didnt leave you with the jitters.
Quentin Savoy –
Tastes good works good. Lots of caffeine, may cause withdrawal headaches?
N/a –
Tastes great easy on the stomach
Ahmed –
جودة العالية و تغليف كراتين بشكل محقن و ممتاز و سرعة توصيل ونظافة سيارة و مندوب
Esteban Rojas Rendon –
C4 Smart Energy is a functional energy drink that delivers a solid boost without the jittery side effects common in high-caffeine beverages. It contains 200mg of caffeine from natural sources and includes ingredients like Cognizin® Citicoline, which is marketed to support mental focus. The drink is sugar-free and low in calories, which makes it a good option for people watching their diet or trying to avoid crashes from sugar-loaded drinks.
The flavor is surprisingly clean and not overly sweet, with options like Peach Mango, Frozen Bombsicle, and Cherry Limeade. It doesn’t have the harsh aftertaste some energy drinks do. I noticed a noticeable increase in alertness and focus about 20 minutes after drinking it, which lasted a few hours. Overall, C4 Smart Energy is a solid choice for students, gamers, or professionals who need a mental boost without the downsides of sugary or overly aggressive energy drinks.
Salina D. –
Great quality low cost product.
Esteban Rojas Rendon –
This is the best energy drink that I’ve ever had. No alkaline taste like Red Bull, and doesn’t ever feel like my heart is going to pop out of my chest. It’s light and tasty and works great.
Nathan Carrasco –
Tasty! Works good for a pick me up. Cheaper than redbull. I like it.
Ashok Kumar –
Order missing
9 only not 12 as specified and damaged
Cal –
One of the better flavors offered by C4 in the smaller cans.
Sandra perdue –
Love these drinks
Typical –
This is currently my favorite energy drink. I also like Alani Nu, but this seems to have a but more of a kick with the same amount of caffeine.