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Cellucor C4 Ultimate Shred Review - 14 Things You Need to Know

Cellucor C4 Ultimate Shred is the “ultimate” pre-workout. We were asking questions concerning how the product works and if the company is telling the whole story. With that, our research team went to work.

We found some information regarding the supplement’s ingredients and how they tie to the company’s claims. We also looked into the product’s reviews. There seems to be pros and cons to using the product.

Cellucor C4 Ultimate Shred can be purchased through their Official Site.

Cellucor C4 Ultimate Shred Readers: Noom is offering our readers a risk-free trial, for a limited time. Click here for more information!

What is Cellucor C4 Ultimate Shred?

Cellucor C4 Ultimate Shred is a pre-workout powder designed to help men and women achieve that boost of energy needed to hit the workout full steam. It provides a formula that combines ingredients to boost energy, endurance, focus, and pumps. The supplement is free from carbohydrates.

The powder is available in a variety of flavors, including:

  • Mango Nectar
  • Sour Batch Bros
  • Midnight Cherry
  • Lemon Italian Ice
  • Icy Blue Razz
  • Strawberry Watermelon
  • Gummy Candy

What does the research have to say about Cellucor C4 ingredients, though?

  • Journal of the International Society of Sports NutritionNitrosigine and citrulline malate was found to increase skeletal muscle blood flow, which may help boost exercise performance.
  • Toxicology ReportsCapsaicinoid compounds have been found to reduce some of the negative effects of consistent physical activity, specifically related to inflammation, metabolism processes, and energy consumption.
  • Amino AcidsIn this study, Carnosyn was found to improve exercise capacity.

Products Similar to Cellucor C4 Ultimate Shred

Cellucor C4
Cellucor CLK
Cellucor P6

How Did Cellucor C4 Ultimate Shred Start?

how did cellucor c4 start

Cellucor C4 Ultimate Shred is produced by a nutritional life sciences company called Nutrabolt. Nutrabolt was founded in 2002 in Texas. The company markets products for bodybuilding, weight-loss, and other life events and needs. Other products from the brand include C4 Ripped and C4 Sports.

Cellucor C4 Ultimate Shred Claims

According to the manufacturers, using Cellucor C4 Ultimate Shred can:

  • Promote fat loss
  • Increase energy levels
  • Provide greater endurance
  • Improve focus
  • Deliver pumps

Cellucor C4 Ultimate Shred Ingredients

cellucor c4 ultimate shred ingredients

The claims for the supplement tie to its Shred Matrix. Here is the list of Cellucor C4 Ultimate Shred ingredients:

  • Caffeine Anhydrous
  • CarnoSyn Beta-Alanine
  • BetaPower Betaine Anhydrous
  • Nitrosigine
  • Capsimax Cayenne
  • Citrulline Malate
  • N-Acetyl-L-Tyrosine
  • AlphaSize Alpha-Glyceryl Phosphoryl Choline (A-GPC)
  • DygloFit
  • BioPerine
  • Gingever
  • Oligonol
  • Theacrine
  • Zembrin
  • Taurine
  • Huperzine A

Citrulline Malate

This consists of L-Citrulline, amino acid and precursor to L-Arginine, and malate, the salts esters of malic acid.

A study published in Biochemical and Biophysical Research Communications found that this combination is beneficial to cardiovascular health.

Several studies have shown the ingredient to be beneficial for bodybuilding by enhancing exercise performance and improving recovery.

One study in the Journal of Strength and Conditioning Research showed that male participants saw a great improvement in muscle recovery with citrulline malate supplementation.

In another study, 17 male participants were given six grams of citrulline malate before a cycling session. The supplementation enhanced the use of amino acids and the production of arginine metabolites like nitric oxide, a vasodilator.

Additional evidence that citrulline malate works to boost physical power is necessary.


According to Icon Group, the company that makes DygloFit is extracted from the Dichrostachys glomerata fruit reported containing polyphenol bioactives.


Nitrosigine is a branded ingredient from Nutrition21. It is a combination of arginine and silicon.

A study published in the Nutrients suggests that the ingredient can help increase nitric oxide. Sixteen male participants saw an improvement in energy levels after supplementation of 1,500 mg of the inositol-stabilized arginine silicate daily for three days. Also, levels of creatine kinase, linked to muscle damage, were decreased.

Capsimax Cayenne

Capsimax cayenne is an extract from spicy chili peppers. The benefits of cayenne’s active ingredient, capsaicin, have been widely investigated. One potential benefit demonstrated is its positive effect on metabolic rate, per research in PubChem. Further research suggests that capsaicin can increase fat oxidation.

Caffeine Anhydrous

This ingredient is known to increase energy. This is because it stimulates the adrenal glands (part of the nervous system), says Nutrients. In response, the nervous system releases neurotransmitters called catecholamines, which use energy to fight off stress. Examples of catecholamines are adrenaline and noradrenaline. Also, catecholamines can increase blood circulation to muscles.

According to Current Neuropharmacology, caffeine can help with concentration, memory, and physical exercise benefits, but there are many concerns associated with its side effects and toxicity.

Does Cellucor C4 Ultimate Shred Work?

does cellucor c4 ultimate shred work

Cellucor C4 Ultimate Shred Benefits and Results

As the company states, Cellucor C4 Ultimate Shred is supposed to help your body:

  • Burn fat
  • Boost energy
  • Supply endurance
  • Improve focus
  • Give pumps

Concerning the Cellucor C4 Ultimate Shred results, they will vary depending on the user. Because caffeine is one of the more essential ingredients in a pre-workout, results would undoubtedly rely, at least partially, on how much caffeine the user consumes daily. Someone who drinks no caffeine will notice a stronger energy boost than someone who drinks caffeine all day or frequently uses caffeinated supplements.

Details on Cellucor C4 Ultimate Shred and Weight Loss

Citrulline Malate

This is said to promote weight loss because the body it uses as L-Arginine. L-Arginine is converted into nitric oxide (NO), which helps inhibit the buildup of a substance called lactic acid in the muscles. After an intense workout session, the muscles can become extremely sore and tired due to the acid.

NO increases blood circulation by relaxing the blood vessels, allowing more oxygen and nutrients to be carried to the muscles. Therefore, it can improve recovery and help maintain endurance during physical activity, thus promote fat burning.


According to research, the bioactives in the D. glomerata fruit may have fat-burning properties.

Capsimax Cayenne

The capsaicin in cayenne peppers is also linked to weight loss because of its reported thermogenic effects — increased heat can help burn fat, according to the British Journal of Nutrition

Also, cayenne may help suppress appetite. The effects of cayenne on appetite have been noted in studies with both rodents and humans.

Pros & Cons

Pros and Cons of Cellucor C4 Ultimate Shred


Here are the pros of the pre-workout powder based on the information our researchers collected:

  • Includes zero sugar
  • Uses clinically-studied ingredients
  • 30-day money-back guarantee
  • Includes nutrients


  • Customers may not like the taste
  • May cause side effects
  • Fairly expensive cost
  • May contain too much caffeine
Where to Buy

Where Can You Buy Cellucor C4 Ultimate Shred

where to buy cellucor c4 ultimate shred

Where can you buy Cellucor C4 Ultimate Shred? Besides the official website, Cellucor C4 Ultimate Shred is available from multiple retailers, including:

  • Amazon
  • GNC
  • Vitamin Shoppe
  • eBay

What is the Cellucor C4 Ultimate Shred Price?

The Cellucor C4 Ultimate Shred price is about the same as all retailers — $49.99.

How to Use Cellucor C4 Ultimate Shred

The recommendation is to take one scoop mixed with 10-12 fl. oz. of water at least 20 to 30 minutes before a training session. It’s important to drink plenty of water after taking the pre-workout because caffeine works as a diuretic, increasing the likelihood of dehydration. Dehydration can cause feelings of dizziness or fatigue, which would account for some reports of these side effects in user reviews.

Cellucor C4 Ultimate Shred Warnings

First things first, do not go above the recommended amount.

Cellucor C4 Ultimate Shred is to be taken by healthy individuals aged 18 years or older. Women who are pregnant or breastfeeding should not use the supplement.

If you have any medical conditions, we advise you to speak with a doctor before usage. This is also recommended for individuals who frequently consume caffeine from other sources such as coffee, soda, etc.

Side Effects

Potential Cellucor C4 Ultimate Shred Side Effects

Based on the ingredients as well as some reviews, potential Cellucor C4 Ultimate Shred side effects include:

  • Nausea
  • Diarrhea
  • Headaches
  • Abdominal cramping
  • Nervousness
  • Itchiness
  • Vomiting
  • Sweating
  • Skin irritation
  • Loss of appetite
  • Jitteriness
  • Fast heart rate
  • Increased urination
  • Skin rashes
What Users Are Saying

What Users Are Saying

“Love love live this. The taste is awesome and I get a good energy kick. I’ll buy again and again.”

“This pre workout continued to give me the “jitters” even after a 1.5 hour gym session. Not very concentrated either. The scoop amount is too big. I used about 3/4 scoop when it calls for 1-2 scoops and still too shaky post workout.”

“Well where to begin? This is my first review of any products, however this has been my 4th can. As one of the reviews here claims, be prepared to sweat, I’m talking drenching sweat. I will admit, I am heavier, however this has also helped along the ways. I used to take it every other day for my bigger workouts, but last batch, I started taking it every day, Mon-Fri for my workouts. I will say as someone who has NEVER taken any pre workouts, the first batch, yeah I felt eager, ready to beat down anything, and it was great. 60 scoops later, I still get that feeling just not as intense, I figured maybe body got used to the 300mg of caffeine. However, it shouldn’t be the only thing pushing you to workout, that should be on you. Even after those 60 scoops later, I still come home drenched in sweat, shirt weighing down. Again, I’m a bigger guy, (217 now from 299.) I will advise anyone looking to lose weight, and get going, yeah use this. Sure the flavor isn’t the greatest, but I’ve tasted worst things, and if you can get past that 10 fl oz of water, then go hard working out, you’ll be fine. Will definitely keep buying it to get my goal. Cheers out there, keep going strong with your gym goals!”

Bottom Line

Bottom Line on Cellucor C4 Ultimate Shred

Does Cellucor C4 Ultimate Shred work? By the looks of it, Cellucor C4 Ultimate Shred may be useful. We like that the supplement includes clinically-studied ingredients common in pre-workouts like caffeine, but the formula isn’t really that different from several others in the Cellucor C4 line.

When it comes to finding a useful product, a significant factor to consider is clinical evidence. Does research back them? It’s always necessary to look into the science behind a program before making a judgment.

Among the best products we’ve found with clinically-tested methods shown to help men and women achieve weight loss is Noom. Various elements set this app apart from others, including human coaching, personalized meal plans, and so much more.

We found that the makers of Noom offer a free trial offer to all Dietspotlight readers – something you should take advantage of.

Learn More About Noom »
Cellucor C4 Ultimate Shred Review
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Cellucor C4 Ultimate Shred

Is Cellucor C4 Ultimate Shed for weight loss?

Although Cellucor c4 Ultimate Shed is not made specifically for weight loss, it may indirectly aid in weight loss. However, it is marketed as a pre-workout.

What are Cellucor C4 Ultimate Shred ingredients?

Cellucor C4 Ultimate Shred ingredients include citrulline malate, CarnoSyn beta-alanine, betaine anyhydrous, Nitrosigine, and the C4 Ultimate Shred & Thermogenic Matrix.

The C4 Ultimate Shred & Thermogenic Matrix contains n-acetyl-l-tyrosone, caffeine anhydrous, DygloFit fruit extract, velvet bean seed extract, Capsimax, Oligonol lychee fruit and green tea extracts, Theacrine, Gingever, AlphaSize, Zembrin, Rauwolfia vomitoria root bark extract, and Huperzine A.

Are there any Cellucor C4 Ultimate Shred side effects to worry about?

Some of the potential side effects of Cellucor C4 Ultimate Shred include nausea, jitteriness, chest pain, headaches, increased urination, and a fast heartrate.

Is Cellucor C4 Ultimate Shred safe?

Although Cellucor C4 Ultimate Shred is generally safe to use, it is important to check with your medical doctor before starting use, especially due to its high caffeine content.

Is Cellucor C4 Ultimate Shred for men or women?

Cellucor C4 Ultimate Shred is for anyone above 18 years of age.

Where can I buy Cellucor C4 Ultimate Shred?

Cellucor C4 Ultimate Shred can be purchased using their Official Site.

Where can I buy Cellucor C4 Ultimate Shred?

You can buy Cellucor C4 Ultimate Shred on the official website, GNC, Amazon, and other online retailers for $50 a canister.

Is there a Cellucor C4 Ultimate Shred free trial or free sample?

Cellucor C4 Ultimate Shred does not currently offer any free trials or free samples.

What is the most common Cellucor C4 Ultimate Shred complaint?

The most common complaints of Cellucor C4 Ultimate Shred are the potential side effects.

What are some products similar to Cellucor C4 Ultimate Shred?

Some similar products to Cellucor C4 Ultimate Shred are Pre Jym, Gnar Pump, and Ghost Legend Pre-Workout.

1 Cellucor C4 Ultimate Shred Reviews

  • Anonymous

    Is this on the NCAA banned list?

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