C4 Ultimate Pre Workout Powder – Productivity Fuel for Power Hours in the Home Gym
C4 Ultimate Pre Workout Powder – Productivity Fuel for Power Hours in the Home Gym
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Why you'll love it
- Industry-leading 300mg caffeine dose for users who want maximum, fast-acting energy
- Clinically studied ingredients like CarnoSyn Beta-Alanine and patented creatines lend credibility over generic pre-workouts
- Sugar-free, vegan, keto, and gluten-free formulation fits restrictive diets without compromise
- Wide range of distinctive flavors (Jolly Rancher Cherry, Hawaiian Punch, Frozen Bombsicle) reduces flavor fatigue across restocks
- Two patented creatines deliver more complete creatine support than single-source competitors
- Comprehensive 6g Citrulline Pump Matrix targets the 'pump' experience that serious lifters actively seek
Perfect for
- Pre-workout energy and focus boost before heavy lifting or HIIT sessions
- Increasing muscular endurance and rep count during resistance training
- Maximizing muscle pumps and nitric oxide response for hypertrophy workouts
- Fighting workout fatigue during long or intense training sessions
- Daily energy priming for serious training days when motivation or output needs a boost
Backed by 20 years of sports nutrition expertise, we’ve raised the bar with an innovative selection of supplements. Since every fitness journey is unique, we continue to develop and deliver products that support our customers at every experience level.
Ultimate pre-workout performance for men & women
Formulated to fuel your ultimate, C4 Ultimate contains ingredient dosages for unmatched energy, powerful performance, muscular endurance, and extreme focus.
ULTIMATE ENERGY
Fuel your ultimate training and results with 300mg of caffeine for no-holds barred energy.
ULTIMATE ENDURANCE
Unleash ultimate endurance and fight fatigue with 3.2g of the clinically studied CarnoSyn Beta-Alanine
ULTIMATE PERFORMANCE
Elevate nitric oxide levels with a 6g Super Pump matrix of L-Citrulline, Citrulline-Malate, and NitraMax (NO3-C) Citrulline Nitrate.
ULTIMATE FLAVORS
Legendary zero sugar C4 taste in every scoop. With billions of servings sold, C4 has been setting the standard in flavor for over a decade.
America’s #1 Selling Pre-Workout*
Millions of people—ranging from beginners all the way up to the elite competitors, have relied on C4 pre-workout to ignite their fitness journey.
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Product Information
BUILD STRENGTH - Formulated with a Super Citrulline Pump Matrix to support ultimate pumps and an increase in nitric oxide
INCREASE REP COUNT - Formulated with CarnoSyn Beta-Alanine, a premium clinically studied beta-alanine, which has been studied to support muscular endurance and fight fatigue
MORE SCOOPS, PLEASE - Formulated with a patented and clinically studied compound that may help the body prolong its caffeine tolerance buildup
ULTIMATE ENERGY - Get your ultimate workout started with 300 mg of caffeine.
DELICIOUS FLAVORS UNLIKE ANYTHING ON THE MARKET - Cotton Candy, Icy Blue Razz, Orange Mango, Sour Batch Bros, Strawberry Watermelon, Freedom Ice, and Mango Foxtrot
Packaging May Vary*
Brand: C4
Flavor: Strawberry Watermelon
Primary Supplement Type: Calcium, Creatine, Potassium
Unit Count: 11.5 Ounce
Item Form: Powder
Item Weight: 13.6 ounces
Item dimensions L x W x H: 4.1 x 4.1 x 4.5 inches
Special Ingredients: Beta-Alanine, Creatine, L-Citrulline
Diet Type: Gluten Free, Keto, Vegan
Product Benefits: Circulation Support, Energy Management, Inflammation Management, Metabolism Management, Muscle Growth
Our most advanced and comprehensive pre-workout experience, C4 Ultimate is fully loaded with 300mg of caffeine, 6g Citrulline Pump Matrix, 3.2g CarnoSyn beta-alanine, and an array of additional supporting ingredients to deliver the ultimate in explosive energy, pumps, performance, and focus.
Packaging May Vary*
Items Details
Frequently Asked Questions
Will 300mg of caffeine help me power through a long workday followed by an evening lift?
Yes. The 300mg caffeine dose in C4 Ultimate is engineered for sustained, high-output energy, making it ideal for professionals who need focused productivity at work and maximum output in their evening training session.
Does C4 Ultimate help shorten the time it takes to get into a focused training zone?
Most users feel the energy and focus shift within 15-30 minutes of dosing. Combined with the 6g Citrulline Pump Matrix, you get mental clarity and physical readiness, which reduces warm-up time and helps you lock into productive training faster.
Can I use C4 Ultimate before a long study session followed by a workout to maximize my day?
You can, but be aware of the timing. The 300mg caffeine provides roughly 4-6 hours of peak focus, so plan your dose around whichever block, study or training, you want the most acute energy for.
Will the 3.2g Beta-Alanine help me push through back-to-back training sets without losing focus?
Yes. CarnoSyn Beta-Alanine buffers muscular fatigue, helping you maintain rep quality and mental engagement across high-volume sessions, which is essential for productivity-driven lifters chasing output goals.
Is this a good replacement for my afternoon coffee before a late-day training block?
For high-stim users, C4 Ultimate can replace an afternoon coffee with the added benefit of beta-alanine, citrulline, and patented creatines, delivering workout-specific performance beyond what caffeine alone provides.
Is C4 Ultimate good for CrossFit athletes who need focus across varied WODs?
Yes. CrossFit and HIIT athletes benefit from the 300mg caffeine for sustained energy, beta-alanine for muscular endurance, and citrulline for pumps, all of which support output across diverse, high-intensity workout formats.
Will this help me stay locked in during a heavy powerlifting meet or PR attempt?
C4 Ultimate is a popular choice for powerlifters and strength athletes because the 300mg caffeine sharpens focus while the dual creatine matrix and pump complex support strength output and muscle fullness under the bar.
Is the focus boost comparable to nootropics or cognitive supplements?
C4 Ultimate targets physical output with caffeine as the primary focus driver. It does not contain nootropics, so while alertness is strong, those seeking dedicated cognitive stacks may layer it with a nootropic for brain performance.
How does C4 Ultimate compare to a basic caffeine pill for productivity?
A caffeine pill only delivers caffeine. C4 Ultimate combines 300mg caffeine with 3.2g beta-alanine, two patented creatines, and a 6g citrulline pump matrix, making it a comprehensive training-focused productivity tool rather than a single-ingredient stimulant.
How does C4 Ultimate compare to other pre-workouts for serious lifters?
C4 Ultimate stands out by combining two patented creatines, a fully disclosed 6g citrulline pump matrix, and 3.2g CarnoSyn Beta-Alanine in clinically studied doses, while many competitors rely on under-dosed proprietary blends.
Is 300mg caffeine too much for someone trying to be productive at work without anxiety?
If you are sensitive to stimulants, 300mg may feel intense. For most experienced caffeine users, it provides clean focus, but start with a half scoop on a non-critical workday to assess your response.
Will the tingles from beta-alanine distract me during focused work?
The harmless paresthesia from 3.2g CarnoSyn Beta-Alanine typically fades within 15-20 minutes, so most productivity-focused users dose it 20-30 minutes before training and avoid taking it before desk work where it could feel distracting.
Is this safe to use on busy weeks when I train 4-5 days in a row?
C4 Ultimate is safe for regular training cycles, but consider cycling off every 6-8 weeks to reset caffeine sensitivity, especially during high-stress work periods when sleep quality matters most for recovery and focus.
How do I take C4 Ultimate for best results?
Mix one scoop with 8-12 oz of cold water 20-30 minutes before training. Beginners or stimulant-sensitive users should start with a half scoop to assess tolerance before progressing to a full dose.
When should I take C4 Ultimate on training days?
Take C4 Ultimate 20-30 minutes before your workout to allow the 300mg caffeine and beta-alanine to peak in your system during your warm-up and working sets.
Can I stack C4 Ultimate with creatine or other supplements?
Yes. C4 Ultimate already contains two patented creatines, but you can stack it with additional creatine, BCAAs, or pump products based on your training goals. Avoid stacking with other high-stim sources to manage total caffeine intake.
Is C4 Ultimate compatible with vegan, keto, and gluten-free diets?
Yes. C4 Ultimate is vegan, keto-friendly, gluten-free, and sugar-free, making it compatible with most restrictive diet protocols and macro-tracking plans.
Does C4 Ultimate mix well in a standard shaker bottle?
Yes. C4 Ultimate mixes easily with water in any standard shaker bottle. For best results, add water first, then the scoop, and shake vigorously for 20-30 seconds.
What is included in the tub when I unbox C4 Ultimate?
Each tub contains 20 servings of C4 Ultimate pre-workout powder with a built-in scoop under the lid. Just add water and a shaker bottle; no additional equipment is required.
Is 300mg of caffeine per serving safe for healthy adults?
For healthy adults who tolerate caffeine well, 300mg is within safe daily ranges when not combined with other stimulants. Consult a physician if you have cardiovascular conditions or caffeine sensitivity.
Can I take C4 Ultimate if I am pregnant or nursing?
No. C4 Ultimate contains 300mg caffeine and other performance ingredients that are not recommended during pregnancy or nursing. Consult your healthcare provider for safe alternatives.
What is the difference between C4 Ultimate and regular C4 pre-workout?
C4 Ultimate is the premium tier featuring 300mg caffeine, two patented creatines, a 6g Citrulline Pump Matrix, and 3.2g CarnoSyn Beta-Alanine. Standard C4 Original is a more entry-level formula with lower clinical doses and a simpler ingredient profile.
