CBUM Non-Stim Pre Workout Review: Raw Nutrition

Are you chasing intense pumps and laser-sharp focus—without the caffeine crash? Look no further than CBUM Non-Stim Pre Workout by Raw Nutrition, a top-tier pre-workout designed by none other than 5x Mr. Olympia Classic Physique champ, Chris Bumstead (CBUM) himself.

In this review, we’ll break down what makes this non-stimulant pre-workout a game-changer and why it could be the perfect addition to your stack.

What is CBUM Non-Stim Pre Workout?

CBUM Non-Stim Pre Workout is part of Raw Nutrition’s Thavage series, formulated specifically for those who want the benefits of a pre-workout—increased blood flow, endurance, and focus—without stimulants like caffeine.

Whether you train late at night, are sensitive to stimulants, or already get your caffeine elsewhere, this product delivers pure performance minus the jitters.

Key Ingredients & Benefits

Here’s a detailed breakdown of the powerhouse ingredients inside each scoop:

• L-Citrulline – 5g: Citrulline is a nitric oxide booster that increases blood flow and oxygen delivery to muscles. This results in enhanced endurance, better pumps, and reduced muscle soreness. Unlike L-Arginine, which is rapidly broken down, L-Citrulline is efficiently converted in the body for longer-lasting vasodilation.

• Betaine Anhydrous – 5g: Betaine supports muscle power, hydration, and endurance. It works by improving cell hydration, which can lead to increased strength, better recovery, and reduced muscle fatigue. Betaine has also been linked to improved protein synthesis.

• Beta Alanine – 2g: Beta-Alanine is responsible for the tingling sensation you might feel after taking pre-workout. It helps buffer lactic acid buildup, allowing you to push through more reps before fatigue sets in. This means longer, more intense training sessions.
  
• L-Tyrosine – 2g: L-Tyrosine is a cognitive enhancer that helps with focus, mental clarity, and stress management. It supports the production of neurotransmitters like dopamine and norepinephrine, making it ideal for intense workouts where mental focus is key.
  
• Nitrosigine (Inositol-Stabilized Arginine Silicate) – 1.5g: Nitrosigine is a next-generation pump ingredient that boosts nitric oxide levels, increases vascularity, and enhances blood flow. Studies show that it provides a faster and more sustained pump compared to traditional arginine.
  
• Agmatine Sulfate – 1.5g: Agmatine sulfate is another potent nitric oxide booster that enhances muscle pumps and endurance. It also plays a role in pain modulation, which may help you push through tough sets with less perceived discomfort.
  
• Taurine – 1.5g: Taurine is an electrolyte balancer and hydration enhancer. It supports endurance, recovery, and cardiovascular function, making it essential for sustaining high-intensity workouts.
  
• Lion’s Mane Extract (Hericium erinaceus) – 300mg: Lion’s Mane is a nootropic that enhances cognitive function, memory, and neural regeneration. It works synergistically with L-Tyrosine to improve mental focus and help you stay locked in during your workout.
  
• Himalayan Pink Sea Salt – Chloride (580mg) & Sodium (420mg): Himalayan pink salt is a natural electrolyte that helps maintain hydration, muscle contractions, and endurance. Sodium and chloride work together to regulate fluid balance, reducing muscle cramps and dehydration.
  
• Potassium (from inositol-stabilized arginine silicate) – 25mg: Potassium plays a critical role in muscle function, hydration, and preventing cramps. It ensures proper nerve signaling and helps maintain electrolyte balance during intense workouts.

Flavor & Mixability

Raw Nutrition nails it with their flavor options. The “Peach Mango” and “Icy Blue Razz” flavors are fan favorites—smooth, not overly sweet, and no weird aftertaste. It also mixes cleanly without clumping, a major win for anyone who’s tired of gritty pre-workouts.

Performance: Does It Work?

Absolutely. Users consistently report:

• Skin-tearing pumps
• Enhanced muscle fullness
• Improved focus and endurance
• No crash or jittery side effects

The absence of stimulants doesn’t mean it’s weak. In fact, many stack this with the CBUM stim version or caffeine pills if they want to dial it up.

Who Should Use It?

✅ Those training at night
✅ Caffeine-sensitive individuals
✅ Lifters stacking it with a stim version
✅ Athletes seeking clean ingredients
✅ Anyone prioritizing pump, focus, and endurance

Final Verdict: Is CBUM Non-Stim Worth It?

100% yes. If you’re looking for a stim-free option that still delivers crazy pumps, zoned-in focus, and legit performance, CBUM Non-Stim Pre Workout by Raw Nutrition is easily one of the best in the game.
Whether you’re a stim junkie or a caffeine minimalist, this pre-workout earns its spot in your supplement stack.

Rating: 9.5/10

Pros:

• Excellent pump formula
• Clean ingredient profile
• No jitters or crash
• Great flavor options
• Hydration support and endurance-boosting ingredients

Cons:

• Premium price point
• Not a replacement for caffeine if you need that kick

FAQ

1. Can I stack CBUM Non-Stim with a stimulant-based pre-workout?

Yes! Many users stack it with the CBUM Stim Pre-Workout or a separate caffeine source for an extra boost while still benefiting from the pump and endurance formula.

2. Will this pre-workout make me feel jittery?

No, since it contains zero stimulants, you won’t experience any jitters, crashes, or restlessness—just pure pumps and focus.

3. Is CBUM Non-Stim good for late-night training?

Absolutely! Since it’s caffeine-free, it won’t interfere with sleep, making it perfect for evening workouts.

4. How long before my workout should I take it?

For best results, take 20-30 minutes before training to allow full absorption and maximum effect.

5. Does it have artificial sweeteners or dyes?

CBUM Non-Stim uses natural flavors and colors with no artificial dyes, making it a clean formula.

Tried CBUM Non-Stim Pre? Drop your thoughts below!

If you’ve used this product, we’d love to hear how it worked for you. Leave a comment and share your favorite flavor or stack combo!