Cellucor | C4 Shred
SKU: 51447994848

Cellucor | C4 Shred

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Description

Cellucor | C4 Shred350mg sustained caffeine, 3. 2g CarnoSyn, made to train lean C4 Ultimate Shred isn't trying to pack in everything like pumps, hydration, creatine, and brain boosters all at max levels. It's focused: big stim kick, longer energy, better high intensity staying power, and thermogenics for cutting. This is a shred pre workout with solid performance backing. At the base is 3. 2g CarnoSyn beta alanine, the full daily dose that builds up carnosine in your

350mg sustained caffeine, 3.2g CarnoSyn®, made to train lean

C4 Ultimate Shred isn't trying to pack in everything like pumps, hydration, creatine, and brain boosters all at max levels. It's focused: big stim kick, longer energy, better high-intensity staying power, and thermogenics for cutting. This is a shred pre-workout with solid performance backing.

At the base is 3.2g CarnoSyn® beta-alanine, the full daily dose that builds up carnosine in your muscles over time. Carnosine helps buffer acid in muscles, fighting that burn during repeated hard sets. It's key for higher reps, sprints, circuits, and packed sessions where fatigue hits quick. CarnoSyn® is the top branded version, with tons of research, and it's at the full dose here. Right away, you might feel that harmless tingle from beta-alanine. After 2-4 weeks of steady use, you'll push through fatigue better in tough workouts.

The stim side is huge. Total 350mg caffeine, right at the high end of the 200-400mg range that studies show boosts performance. Caffeine blocks adenosine receptors, cutting fatigue while ramping up alertness, drive, and intensity via hormones like dopamine and norepinephrine. What sets this apart is using immediate caffeine with zümXR® extended-release and delayed-release forms. It's built for quick start and steady energy, not the sharp peak and drop of plain caffeine pre-workouts.

For foc

Key Highlights

  • 3.2g CarnoSyn® beta-alanine — full daily dose that builds muscle carnosine over time. This buffers acid buildup, so that burn in high-rep sets, intervals, and circuits doesn't shut you down as fast, letting you keep pushing.
  • 350mg total caffeine — a solid high dose in the research-backed 200-400mg range. For most experienced folks, it means quicker mental kick, less felt effort, and holding intensity when you're dragging.
  • Multi-phase caffeine with zümXR® — not just plain caffeine, this adds extended and delayed-release forms. You get smoother, longer energy without the usual spike and crash from basic pre-workouts.
  • 200mg Alpha-GPC — a good choline source that helps make acetylcholine for focus and muscle signals. 200mg is under the common 300-600mg study range, but it still adds real brain support to the stim mix.
  • 100mcg huperzine A — works with Alpha-GPC by slowing acetylcholine breakdown. In the gym, it makes things feel more dialed in and purposeful, not just hyped up.
  • 50mg Capsimax® cayenne extract — patented capsaicin that boosts thermogenesis without gut issues. This gives real fat-loss vibes, not just a name slapped on a caffeine product.
  • 180mg ginger extract with gingerols — ginger helps digestion and adds to thermogenic effects. It can ease any stomach upset from strong stims too.
  • 50mg Oligonol® — patented mix of lychee and green tea polyphenols for blood flow, less fatigue, and anti-inflammatory help. Research is building, and studies use 100-200mg, but it's a smart fit for cutting and performance.

Who Is This For?

  • Physique folks in a deficit who want sharp, aggressive sessions. 350mg caffeine keeps drive up when dieting tires you, 3.2g CarnoSyn® holds rep quality as burn builds.
  • Hybrid trainers mixing weights with inclines, sleds, or finishers. Strong stims, beta-alanine for intensity, and thermogenics fit fat-loss phases.
  • Morning crew needing quick wake-up and full-session focus. Immediate caffeine with zümXR® extended and delayed beats the rise-drop of basic pres.
  • Seasoned users past 150-200mg caffeine starters. 350mg plus Rauwolfia is for those who handle strong stims well.
  • Fasted trainers wanting energy to blunt hunger and boost output. Stim and thermogenic profile suits early cardio or lifts when low blood sugar drags you.
  • HIIT and circuit fans prioritizing pace over pumps. 3.2g CarnoSyn® buffers acid in repeated efforts, super relevant here.

How to Use

Take 1 serving 20-30 minutes pre-workout. If high-stims are new to you, half it first to check tolerance — 350mg caffeine plus Rauwolfia packs a punch over basic stuff. Mix in 8-12 oz cold water, adjust up for milder taste.

Shaker gives the best mix, especially for these branded ingredients and stims. For quickest hit, go empty stomach or light snack; heavy food delays caffeine and focus. Skip stacking with other stims like energy drinks or fat burners — it gets too much fast.

Pairs well with creatine, electrolytes, and post protein. No need to cycle beta-alanine — daily is best for buildup — but deload caffeine after weeks to avoid tolerance. Store sealed, cool, dry, no moisture in the tub for best scoop and stability.

What to Expect

Minutes 0-10: alertness starts rising as immediate caffeine kicks in. If beta-alanine tingles hit you, it'll be here, maybe on your face, ears, or hands from the 3.2g CarnoSyn®.

Minutes 10-20: it's fully on. Focus sharpens, effort feels easier, and you might get a light warmth from Capsimax® and ginger. This 20-40 minute window is prime for starting — caffeine, Alpha-GPC, and huperzine make drive and concentration pop.

Minutes 40-90: zümXR® keeps energy steady, no sharp drop. First week, stim energy, focus, and tingles stand out. Weeks 2-4, CarnoSyn® loading shines with better handling of hard sets and intervals as carnosine builds.

Frequently Asked Questions

How much caffeine is in C4 Ultimate Shred Pre-Workout?

C4 Ultimate Shred provides 350mg total caffeine per serving. That caffeine comes from a combination of immediate caffeine and zümXR® extended-release and delayed-release caffeine microspheres, so the experience is designed to be more sustained than a simple anhydrous-only formula.

Is C4 Ultimate Shred a fat burner or a pre-workout?

It is best described as a thermogenic pre-workout. You still get true performance support from 3.2g CarnoSyn® beta-alanine and a strong stimulant system, but the inclusion of Capsimax®, ginger, Oligonol®, and Rauwolfia makes the formula specifically oriented toward cutting phases.

Why does this formula use CarnoSyn® beta-alanine at 3.2g?

3.2g is the established clinical daily dose used to raise muscle carnosine over time. Higher carnosine levels help buffer the acid buildup associated with high-intensity training, which is why beta-alanine is especially useful for circuits, intervals, and higher-rep bodybuilding work.

Will C4 Ultimate Shred make me tingle?

Possibly, yes. The 3.2g dose of CarnoSyn® beta-alanine can cause a harmless tingling sensation called paresthesia, especially when taken on an empty stomach. It is normal and not a sign that anything is wrong.

Is the Alpha-GPC dose high enough to matter?

The formula includes 200mg Alpha-GPC, which is below the 300-600mg range most often used in clinical studies. That said, in a high-stim formula it still contributes to focus and works synergistically with huperzine A and caffeine for a more locked-in training experience.

Can I stack this with coffee or an energy drink?

That is generally not a smart idea for most users. With 350mg total caffeine plus Rauwolfia already in the formula, adding more stimulants can increase the chance of anxiety, rapid heartbeat, GI discomfort, and sleep disruption.

When should I take C4 Ultimate Shred before training?

Most users will do best taking it 20-30 minutes before training. That timing gives the immediate caffeine enough time to rise while also setting up the extended-release system to carry the session longer.

Is this a good pre-workout for beginners?

No, this is not the best starting point for beginners. The stimulant intensity is high, the thermogenic profile is aggressive, and the sustained caffeine delivery can feel stronger and last longer than entry-level formulas.

Does this formula use a proprietary blend?

No full proprietary blend is declared, which is a positive. Most active ingredients are disclosed individually, although the exact split between caffeine anhydrous and the zümXR® caffeine microsphere components is not listed.

How does C4 Ultimate Shred compare with a pump-focused pre-workout?

This formula is much more about energy, thermogenesis, and sustaining work quality during a cut than maximizing vasodilation or pump volume. If your top priority is nitric oxide production and fullness, a citrulline-heavy pump pre would be more appropriate; if your priority is training intensity while leaning out, this formula makes more sense.

Shipping Notes
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Exchange/Return Notes
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SKU: 51447994848

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4.4 ★★★★★
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Verified Purchase
S Bowman
Dallas, US
★★★★★ 3
Held Up Better Than Most for My Aggressive Chewer
Color: purple, Color: purple
I have to give the Fuufome Dog Chew Toy for Aggressive Chewers a solid 3 out of 5 stars. I have a very high-energy Lab mix named Boone who is an extremely aggressive chewer. Finding toys that last in our house is nearly impossible. This is actually his second toy like this - the first one is currently in my yard in three different pieces. While I don’t believe this toy was advertised as indestructible, I still hoped it would fully survive Boone’s chewing. Some parts have held up well, which is more than I can say for many other toys we’ve tried. However, he was still able to do some noticeable damage to the rubber portion after consistent use. To be fair, it did last longer than most toys we’ve purchased, which says a lot considering how tough Boone is on his things. For moderate chewers, I think this would hold up quite well. For truly aggressive chewers like mine, it’s tougher than average but still may show wear over time.
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Reviewed in the United States on February 24, 2026
A
Verified Purchase
Amazon Customer
Pawtucket, US
★★★★★ 5
Best toy for heavy chewers
Color: Green
My dog is an aggressive chewer and I have trouble finding toys that last longer than 5 minutes before being so destroyed it is no longer safe to let him keep it. He loves this toy and naws on it for hours daily. Yes, it has multiple chew marks, but it is still intact completely. No little pieces have been chewed off. I highly recommend this toy for any dog especially those who destroy every toy in seconds like mine does.
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Reviewed in the United States on October 12, 2025
N
Verified Purchase
Nirpno
Houston, US
★★★★★ 2
NOT Indestructible and a Nylon Product (NOT A CHEW TOY)
Color: Green, Color: Green
I gave this dog toy 2-stars based on my dog toy rating system (DTRS) for “Bruce” the Green Alligator! Unfortunately, I didn’t notice in the fine print of the product description on the website that this toy consisted of Nylon. If I noticed that description, I would’ve never purchased this product. Please do your own research on Nylon wrt teeth. I wasn’t impressed with the toy construction out of the box. The nylon head and tail sandwich the rubber body with soft rubber spines on Bruce’s back for easy gripping. This is not an “Indestructible” dog toy. Safety (1-rating): 1. I was always concerned about my dog’s teeth possibly cracking while he was chewing on Bruce’s Nylon ends. Thankfully, his teeth were fine throughout the use of this toy. 2. The Nylon came off in small pieces after a few hours and continued for the life of the toy; see picture. I never intended for my dog to swallow pieces of Nylon. 3. Bruce’s rubber rear end is where most of the damage occurred, as my dog was tearing off pieces of rubber and spines, which he thankfully passed through his system over a period of 2-3 days after I threw Bruce away; see picture. 4. The chewed-up Nylon ends were very hard, rough, sharp and pointy. There were occasions where I noticed my dog’s gums were bleeding as a result of chewing this toy. 5. Bruce is big enough not to swallow in its entirety, which is why I’m giving this a 1-rating for safety. 6. This is a molded product and not a plush product. Durability (2-rating): 1. It took my dog 1 to 2-weeks to get the toy in the shape that is shown on the posted photos. 2. The Nylon was immediately being scratched and scraped apart on day-1. Then I noticed pieces of Nylon coming off of Bruce after 3-4 days. 3. The rubber was immediately being punctured with small divots around the body on day-1. I noticed over the next couple of days that my dog was focusing on the rear end and trying to pull the rubber off the Nylon tail. 4. The rubber started coming off more quickly after 1-week, until I removed it all together. Squeaker (N/A): 1. Bruce has no squeaker. Fatality (2-rating): 1. Bruce had a longer life than most of my dog’s toys, but then again, I expected this to last much longer as the seller claims it is “Indestructible”, which it is not. 2. I tried filing off some of Bruce’s chewed up Nylon ends to smooth them out for more chew time, but came to my senses and just threw him away for safety concerns only. In conclusion, “Bruce” the Green Alligator should not be given as a chew toy, but more as a fetch toy, unless you want your dog to digest the Nylon and rubber materials. Days of Enjoyment Given to Dog: 12/16/2024 Dog Toy Death: 01/08/2025 Total Days Used: 13 days (11 days spent away from home during the holidays) About my dog “Cannoli” for comparison Breed: Blue Healer / Lab mix Sex: Male Age: 8-months Weight: 45-lbs Size: Medium Energy Level: High Chew Rating: Aggressive
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Reviewed in the United States on February 26, 2025
M
Verified Purchase
manuel rodriguez
San Leandro, US
★★★★★ 5
My dog loves it
Color: 1 PC-Beef-Red, Color: 1 PC-Beef-Red
The bone arrived today and my dog loves it. He is a very aggressive chewer and destroyed almost all his toys so far, even toys that were advertised for aggressive chewers unfortunately didn't held out long, the longest so far was a stuffy we couldn't find anymore and that one lasted him a few weeks but everything else lasted him an hour up to a few days max, even bones don't last him long so we have our hopes set on this bone to satisfy his chewing needs. I will update my review later on sturdiness, since we just got it and I can't review that yet but so far he loves it he has been chewing on it non stop, he already managed to get very small pieces of as shown in picture but with a regular bone he would've already been much much further. The bone is only 10 bucks so the value for money you get based on my experience so far is amazing! But also for this I will come back later to touch upon more. The size is good, our boy is a medium sized dog and this bone was advertised for medium to large size dogs and I thinks the size is just right for our boy . And there is definitely a beef flavor on it you can smell it but it doesn't smell bad it's a nice smell and not very strong but when he is chewing on it you smell it. I would based on my experience so far definitely recommend this bone but also on this I will touch back upon later if it's worth it in the long run. So far a very happy dog and owners here. Edit on May 8th (original review was on March 11th) He still hasn't managed to destroy it it's the first (cgew)toy he hasn't managed to destroy yet which is very impressive since he managed to destroy the even most toughest things we got for him in a week tops and bones within 1, 2 days tops, so we are very happy and pleased with this bone and will definitely get more later. He still enjoys chewing on it and leaves our things mostly alone for some reason he just likes stealing my things and chew on it lol. So 2 months later still stand by recommending this when your dog loves to chew and destroys everything he puts his mouth on.
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Reviewed in the United States on March 11, 2026
J
Verified Purchase
Joy
Grantham, US
★★★★★ 5
Extremely durable, dogs love them
Color: 2 PC-Beef-Red, Color: 2 PC-Beef-Red
I was looking for the toughest and most durable dog chew bone I could find and this is it. I have bought multiple other brands that claim to be very durable and tough for a very long time and this is the one for sure. The shower has described this phone accurately and it truly does last. I purchased this bone about 2 months ago. As you see from the photos attached, this is a very well made chew bone and my aggressive pitbulls can't tear it apart do they try. They never get tired of it and chewing it every single day for hours on and keeping them very occupied. I have two bones and three pitbulls that chew on it every day. It is so adorable and has an awesome flavor to it which I think entices them even more to want to chew on it. The durability and Lasting power is amazing to me with these tough chewers. I highly recommend this product to everyone out there. I will say only one negative and that is that the middle wraparound piece they were able to pull off but that is not a big deal because there is plenty of bone which was under that cover in the middle of the bone. There's a few mauled chips missing from the ends but the life of this bone is obviously going to be a long time which really surprised me. Give it a shot if you have heavy duty chewers and you will find how awesome this phone really is and it's durability and strength our second to none in my opinion.
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Reviewed in the United States on September 5, 2025

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