C4 Extreme Energy

C4 Extreme Energy

Explosive High Sensory Pre-Workout Energy*
Contains 300mg of Caffeine & Other Stimulants to Help You Burst Through Workout!*
8.5  out of 10  (91 Reviews)
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Product Overview

C4 bottle product image

C4 Extreme Energy

All pre-workouts are not born equal. Some provide a little energy, some provide the kick you need to build mass, some help you lose it. But what you need is energy. Boundless energy. Your intensity comes after an extreme jolt, so we’ve added the most stimulating, caffeine-loaded pre-workout supplement to our C4 ID Series.* C4 Extreme Energy is made for your passion, steady drive and unbroken commitment to your workouts.*

If you find yourself drinking cup after cup of coffee throughout the day and built your caffeine tolerance above the rest, C4 Extreme Energy is made for you.*

C4 Extreme Energy is the next step for those who want that extra rush.* Its formula features more than twice as much caffeine, more focus and more endurance than C4 Original.* C4 Extreme Energy isn’t for the casual gym goer; it’s for those of you who want to explode through their PRs over and over and over again.* We know that for some, just a little bit of energy isn’t enough. C4 Extreme Energy is here to help you get up and go, rising to any challenge.*











*Includes all C4 products over product line lifetime.

Ratings & Reviews

C4 Extreme Energy
Overall Rating
91 Ratings
Verified Buyer Rating
14 Ratings
Average Flavor Rating
4 Flavors
Top Rated Flavor
Icy Blue Razz
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Jul 06, 2019
  • 10 Cherry Limeade

I feel very good, endurance and concentration increased obviously, making me want to win the game, I love C4

Apr 08, 2019
Verified Buyer
  • 10 Cherry Limeade

C4 extreme energy gives me a nice boost and helps me focus during my workouts. I do not experience any tingling or other side effects. It simply gives me a surge of energy that lasts throughout my workout. I will say don't take it close to bedtime because you will be awake for awhile. Cherry limeade is the only flavor I've tried but it tastes good, easy to get down.

Feb 24, 2019
Verified Buyer
  • 10 Cherry Limeade
  • 9 Icy Blue Razz

Awesome pre workout. I alternate between this and C4 extreme. Crazy energy and pump when combimed with volcano force factor

Nov 05, 2018
  • 10 Cherry Limeade

Taste: I have to say, that to me, Cellucor has always killed it in the flavor section. I don't think there are any I've had that I haven't liked. They didn't have an option for the Lemon Drop, which I have. This flavor is awesome, just like the little candies, I'd say its more like a lemonade but I love it. Mixability: Shaker or spoon and glass, it all mixes great. I even sometimes just throw a scoop in my mouth and swish it with water with no issue. No surprise coming from Cellucor Price: Excellent price. You get 30 servings for almost half the price of some of the pres on todays market. Makes me feel like I can use it as just a regular energ y drink instead of treating it like gold. Effects: I can seriously feel my blood get going with this stuff, I get tingly (the good kind) and once I start lifting the pump is absolutely on point. Caffeine is a clean energy, no crash or anything like that

Oct 21, 2018
  • 7 Cherry Limeade

Both are super effective when I need a pick me up for the gym after a long day! You get the tingles from the beta-alanine but it isn’t too strong like I thought it might be since it’s “extreme”. It was good clean energy and I felt like I could work out longer and harder than I otherwise would. The cherry limeade flavor was decent, but it had a chemical taste to it. The Strawberry Kiwi was very good and I also tried the Lemon Drop however that flavor is not available for review. Overall great product!

Oct 21, 2018
  • 8 Cherry Limeade

The energy from this preworkout was amazing. It wasn't too strong where you crash after your workout, but it definitely hits you hard. The only downside would probably be the flavors. they have an underlying kind of chemical, "preworkouty" taste to them still. Tingles weren't too bad, but I almost prefer them because you know the preworkout is working. Definitely one of the more stronger ones out there.

Oct 18, 2018
Verified Buyer
  • 8 Cherry Limeade

Cherry Limeade - I'm not a big fan of cherry-flavor anything so I am pretty bias in my perspective of this flavor, but it actually tasted decent to me (a bonafide cherry hater). It was smooth to drink... smooth consistent taste... not overly acidic like some I have tasted in the past. Strawberry Kiwi - This flavor was on point! They mixed well together as flavor combo and you could actually taste kiwi individually as well as strawberry. Aside from watermelon this is probably one of my favorite flavors from Cellucor. Overall - Smooth taste... no acidic after-bite... good strong pump and alertness... I'm a believer!

Oct 15, 2018
  • 7 Cherry Limeade

This is a really strong preworkout. The name says it all, extreme! With 300 mg of caffeine, you are pretty much guaranteed some explosive energy. If you are sensitive to stimulants then I would go for the regular C4 because this may be a little much. This really helps me after a long day at work. I take me a scoop and then I am ready to hit the gym! This keeps my energy up the entire session with no crash.

Oct 15, 2018
  • 8 Cherry Limeade

I was able to try these two flavors and the only real concern I had was I felt like they could use a little more flavor. The flavor was there but not quite as strong as in other variations. Now dont get me wrong, it is VERY POSSIBLE that I was using too much water and thinning it out. The boost of energy that it gave me definitely lived up to it's name, extreme! I have been feeling more tired than usual lately (gotta love season change) and this helps me get back up and get moving. I have used it as preworkout and for anytime energy. I was not disappointed at all by the effectiveness!

Oct 14, 2018
  • 10 Cherry Limeade

I was lucky enough to try out 2 different flavors of C4 Extreme Energy recently, and it did not disappoint! This product does what it is advertised to do, gives you extreme energy! The ingredient list here is excellent as usual per all Cellucor products, with this pre-workout having 300mg of caffeine, 3.2g of beta-alanine, 1g of arginine and a very nice energy blend. As a side note, I really find the chart on the side of the bottle useful, showing you exactly what each C4 pre-workout powder is intended to do, obviously here Extreme Energy being best used for energy, but still having a good effect on pump and focus as well. I also like the amount of caffeine here, being 300mg which in my opinion is the perfect amount. Not too much but not too little either, perfect enough to really get you going without going too crazy on the caffeine. The two flavors were great! Cherry limeade was amazing! One of the better I've had, and strawberry kiwi was great as well! Overall, this is a great pre-workout if you are looking for some great flavors along with a nice rush of energy!

Oct 12, 2018
  • 9 Cherry Limeade

Great energy off this one. Intense energy. Make sure your workout is long enough and intense enough to burn it off, othrewise no sleep til brooklyn!

Oct 11, 2018
  • 10 Cherry Limeade
  • 10 Icy Blue Razz

SOLID pre-workout! I absolutely love how it doesn't clump up (like other brands) isn't a mess to scoop and the taste! I used one scoop each with around 8oz of water and sipped on it while en-route to the gym (20 mins) The flavors of each were spot on, along with energy! I train around 5am so energy is a must-have for me. I was able to obtain a gnarly pump during chest and back, all while feeling like there was no stopping me! Fantastic job Cellucor!

Oct 11, 2018

I have used C4 Extreme Energy for a few weeks and really enjoy it. It's a step up from the regular C4 as it has 300mg of caffeine. It gives a really good energy and focus boost. Not much for a pump, which I normally don't get any pumps from pre-workouts. Flavoring is on point like all Cellucor products. I'd recommend this to anyone who responds well to 250-300mg of caffeine in their pre-workout.

Aug 13, 2018
  • 10 Icy Blue Razz

Great pumps, tons of energy. Icy blue razz in my opinion is best flavor and mixes really well. It does clump if your not careful where you store it so I don’t recommend leaving in gym bag but even with the clumps I just grab a couple and drop in water night before and let it dissolve by next day good to go.

Jul 30, 2018
  • 4 Cherry Limeade

Clumps shortly after breaking the seal. So bad it’s hard to use. Look elsewehere. However. The customer service was good at c4 sent me new packs. Did the same thing though. Clump clump clump.

1 Size
30 Servings
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2 Flavors
Cherry Limeade
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Price: $37.99  ($1.27 / Serving)
Flavor Rating: 8.1

What's in Cellucor C4 Extreme Energy

30 Servings Cherry Limeade
Serving Size: 1 level scoop (8.5g)
Servings Per Container: 30
Amount Per Serving %DV
Calories 0       
Total Carbohydrate 0 g 0%**
Sugars 0 g
Vitamin C (as Ascorbic Acid) 250 mg 417%
Niacin (as Niacinamide) 60 mg 300%
Vitamin B6 (as Pyridoxal-5-Phosphate) 1 mg 50%
Folic Acid 500 mcg 125%
Vitamin B12 (as Methylcobalamin) 70 mcg 1,167%
Calcium (as Calcium Silicate) 20 mg 2%
Potassium 100 mg 3%
CarnoSyn® Beta-Alanine 3.2g
Creatine Nitrate (NO3-T®) 1g
Citrulline Malate 1g
C4® Extreme Energy Blend 831mg
N-Acetyl-L-Tyrosine, Caffeine Anhydrous (300mg), Velvet Bean (Mucuna pruriens) seed extract (standardized for L-Dopa), Theacrine (as TeaCrine®), Rauwolfia vomitoria root bark extract, Huperzine A (from Toothed Clubmoss (Huperzia serrata) aerial parts extract)
** Percent Daily Values (% DV) are based on a 2,000 calorie diet.
† Daily Value not established.
Other Ingredients:
Citric Acid, Silicon Dioxide, Calcium Silicate, Natural Flavors, Acesulfame Potassium, Sucralose, Potassium Citrate, Fd&C Red #40

Directions For C4 Extreme Energy: Take one serving (1 level scoop) of C4® Extreme Energy, mixed with 6-8 fl. oz. of water 20-30 minutes before training. Some individuals may experience a harmless tingling sensation, which is attributable to Beta-Alanine. USE ONLY AS DIRECTED. 

Warnings: THIS PRODUCT IS ONLY INTENDED FOR HEALTHY ADULTS, 18 YEARS OF AGE OR OLDER. Do not use if pregnant, nursing, currently taking PDE5 inhibitors or nitrates for chest pain. Do not take this product before consulting a licensed, qualified, health care professional if you are taking any other dietary supplement, prescription drug or over-the-counter medication; or if, you suspect you have or have been treated for, diagnosed with or have a family history of, any medical condition. This product contains caffeine and should not be used in combination with caffeine or stimulants from other sources. Discontinue use 2 weeks prior to surgery. Immediately discontinue use and contact a medical doctor if you experience any adverse reaction to this product. Do not use this product continuously for more than 8 weeks. Do not use if safety seal is broken or missing. Store in a cool, dry place. KEEP OUT OF REACH OF CHILDREN.

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.