• A black tub of NutraBio's Pre Workout supplement on a white background.
  • A black container of NutraBio PRE Workout Stim Free, Orange Mango Tango flavor, features orange and mango images on the label. Provides 20 servings for strength and pumps. Net weight: 21.32 oz (604g).
  • Supplement facts label for NutraBio PRE Workout Stim Free, an Orange Mango Tango flavor pre-workout with precise ingredient amounts for strength and muscle pumps. Comes in a black container with orange-yellow accents on a dark patterned background.
  • The NutraBio PRE Workout Stim Free supplement label in black and orange highlights product details, nutrition facts, muscle pump and strength benefits, key ingredients, Orange Mango flavor, certification badges, and a transparent ingredient promise.
  • A black container of NutraBio PRE Workout Stim Free in Paradise Punch flavor features bold white and red text, fruit imagery, and details highlighting 20 servings designed for muscle pumps and strength, with no stimulants.
  • A supplement facts label for NutraBio PRE Workout Stim Free appears above a black tub labeled PRE Paradise Punch, showcasing ingredients that support strength and muscle pumps on a patterned gray background.
  • Label for NutraBio PRE Workout Stim Free supplement. Features ingredients, muscle pumps, supplement facts, certifications, benefits, and bold PRE branding in a red, black, and white color scheme.
  • Pre Workout Stim Free Supplement Facts Panel
  • Pre Workout Stim Free Label
  • Pre Workout Stim Free
  • Pre Workout Stim Free Supplement Facts Panel
  • Pre Stim Free Label
  • Pre Workout Stim Free
  • Pre Workout Stim Free Supplement Facts Panel
  • The tub label for NutraBio's watermelon flavored Stim-Free Pre Workout supplement, featuring the nutrition facts, directions, and more.
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PRE Workout Stim Free

PRE Workout Stim Free

Get ready for the ultimate all-in-one pre-workout designed to deliver extreme pumps, laser focus, and advanced hydration while being caffeine-free.

Also available in PRE Workout.

The product is currently sold out. Click the “Notify Me When Available” button below to be notified when it’s back in stock.

Select Flavor
Blue Razz Blue Razz
Orange Mango Tango Orange Mango Tango
Paradise Punch Paradise Punch
Lemon Burst Lemon Burst
Wild Watermelon Wild Watermelon
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PRE Workout Stim Free
$49.99
$49.99

The product is currently sold out. Click the “Notify Me When Available” button below to be notified when it’s back in stock.
NUTRABIO QUALITY GUARANTEE

NUTRABIO QUALITY GUARANTEE

Made in the USA • Third-Party Tested • Fully Transparent Labels • Fully Dosed Formulas

Get ready for the ultimate all-in-one pre-workout designed to deliver extreme pumps, laser focus, and advanced hydration while being caffeine-free.

Description

How To Use

Key Ingredients

Dietary Restrictions

Delivery & Returns

SKU: 22005
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All-In-One Maximum Stim-Free Pre-Workout

NutraBio PRE Stim-Free is an all-in-one, max-strength pre-workout designed to deliver results without stimulants. Each scoop provides clinical doses of the most effective ingredients to enhance pumps, endurance, focus, and hydration.

10g
L-Citrulline
ZERO
Stimulants
3.2g
Beta Alanine
50mg
Astragin®

How NutraBio Is Better

Fully transparent labels, no proprietary blends, and third-party testing on every batch — so you always know exactly what you're getting. Here's how NutraBio compares.

Pre Workout Stim FreeNutraBio
A blank white plastic supplement jar with a matching screw-on lid, shown on a clean white background.Other Brands
Clinically Dosed Formula
Complete Pump Matrix
Multi-Source Energy
Advanced Focus Blend
Hydration Support

The Science-Backed Edge

Every ingredient is chosen with purpose and backed by science to deliver meaningful results. Whether it’s wellness or performance, each formula is fully dosed and built with innovation to help your body function at its highest potential.

A person scoops white powder from a NutraBio PRE supplement container into a black NutraBio shaker bottle, with some powder spilling on the container and their lap.

Live Without Compromise

We are dedicated to helping you achieve real results by ensuring every product is made with the highest-quality ingredients and uncompromising standards. Our commitment to excellence is built to help you reach your potential and live without compromise.

  • Stimulant Free

    Get the cellular energy you need to crush your workout without caffeine or jitters.

  • A bold black hexagon with a circle in the center, surrounded by a hexagonal outline. Four thick arrows extend outward from the hexagon in the up, down, left, and right directions.

    Laser Focus

    Stay locked in and mentally sharp throughout your entire workout. Clinically studied nootropics help eliminate distractions so you can maintain precision and focus in every set.

  • A stylized, angular black and white graphic of a flexed muscular arm, outlined with bold lines, representing strength or fitness.

    Extreme Pumps

    Experience powerful muscle fullness and vascularity with ingredients that boost nitric oxide and blood flow, flooding your muscles with oxygen and nutrients for a pump that lasts beyond your workout.

  • Two black geometric shapes resembling water droplets, one solid on the left and one outlined with a thick white border on the right, both with sharp angular edges.

    Hydration

    Maintain peak performance with essential electrolytes and minerals that restore fluid balance, prevent mid-workout fatigue, and support endurance from start to finish.

  • A stylized, geometric illustration of a muscular arm flexing and holding a dumbbell, depicted in bold black-and-white lines.

    Strength & Endurance

    Clinically dosed performance ingredients help delay fatigue and enhance muscle output giving you the strength and stamina to push harder every session.

  • A black silhouette of a person inside a hexagon, with an arrow curving around the top right corner, suggesting movement or rotation. The background is white.

    Rapid Recovery

    Replenish key nutrients and reduce post-workout fatigue to speed up muscle recovery so you can train harder, more often, and perform at your best.
A person in black athletic wear sits on a bench, holding a container of NutraBio pre-workout powder above a black gym bag with an American flag patch and Nutrabio Performance Wellness label. Gym weights are visible in the background.

The Ultimate Stim-Free Pre-Workout for Focus, Strength, and Endurance

Stimulant Free Energy & Focus

Stay dialed in and mentally sharp without caffeine. Nootropic ingredients support clean, sustained concentration from your first rep to your last.

Unmatched Strength, Pumps, and Endurance

Delivers clinically dosed ingredients that enhance performance, maximize blood flow, and delay fatigue.

Hydration and Recovery Support

Optimizes electrolyte balance and post-workout recovery to help you maintain peak performance every day.

Overall rating: 4.830769 / 5 from 65 reviews.

AI Generated Review Summary

NutraBio PRE Stim-Free is a highly regarded stimulant-free pre-workout supplement that maximizes muscle pumps, enhances strength, and improves focus and hydration. Customers appreciate its effective performance without caffeine, making it ideal for nighttime training and stacking with other supplements.

Summary topics

  • Muscle Pumps: 19%
  • Stim-Free Pre-Workout: 12%
  • Workout Performance: 25%
  • Taste: 30%

Review topics: ["ingredients","boost","formula","taste","work","workouts","pump","pre","stim","caffeine","version","jitters","performance","transparency"].

Review highlights

  • "Hands down the best stim free pre I've found." — Calvin M.
  • "Great tasting mixes nice gives that extra push with workouts" — David F.
  • "Nice vascularity, bigger fuller pumps, # pre workout ." — Edward S.

Reviews

Solid stim free pre

"I drink a lot of coffee throughout the day so don’t need caffeine bun my pre. This is the most stacked formula I’ve found. Tastes great and pump is awesome! 10 grams of citrulline + other pump & focus factors. Amazing product."

— Brandon B. (5/5)

Perfect pre workout

"Love this as it has zero caffeine. I also have the caffeinated version and will often mix them together half and half. Has all the ingredients (and at the correct doses) one could ask for in a pre workout to facilitate pumps and endurance in the gym. Lemon lime flavor for the win. Appreciate how this doesn’t clump like other pre workouts that are packed with ingredients."

— Wyatt P. (5/5)

If it fits your needs

"Stim free for me I need the whole serving size. Sometimes with a pre I can use a smaller does but not with this one. The serving size is only 20 for the container because of that I wouldn't recommend it even on sale it's pricey, make it 30 serving and I would say its a good value on sale. Generaly I like everything I have tried with NB but prices seem to be getting nutty."

— Brad S. (3/5)

Stim Free Pre

"Great preworkout without the stimulant. Highly recommend to get you through training."

— John K. (5/5)

Great product tastes amazing awesome performance

"Picked this up at a local store. I workout at night so I was looking for stim-free and the guy suggested this. It’s been a great product. They only had the orange mango tango. I don’t even like orange and I think it tastes great and theres no grittiness. Great performance benefits in both lifting and endurance workouts. And even taken at night I can still get to sleep easily. Get ready for some tingles tho (in a good way), this stuff has a clinical dose of beta alanine"

— Mike D. (5/5)

Great tasting ingredients intense good

"Great tasting ingredients intense good workouts"

— Jonathan M. (5/5)

The best

"Post-partum mommy here! Gym rat 8 1/2 years now and with baby #2 I definitely needed a boost. This is perfect for anyone who doesn’t want the jitters but wants that gym rat pump to push after a long day!"

— MusclemommyNe (5/5)

Great pump

"You get the pump you want without the fear of gitters or feeling of being over caffeinated in many other pre workout suppliments."

— Michael (5/5)

Best non-stim pre I've had

"In the offseason, I try to limit my consumption of stimulants and dropping a stim pre-workout is an easy way to achieve this. In it's place, I've been using this and have gone through probably about 6 tubs so far. No other non-stim pre comes close."

— Rory L. (5/5)

Still good!

"I have been using this for over three months now and am still impressed how my muscles feel before lifts. Won't stop!"

— Garrett (5/5)

Q&A

Frequently Asked Questions

Why choose a stim-free pre-workout?

NutraBio PRE Stim-Free delivers the same powerful performance benefits as our original PRE but without caffeine or stimulants. It's perfect for those who train at night, are sensitive to stimulants, or prefer a non-stim formula.

What is NutraBio PRE Stim-Free good for?

PRE Stim-Free is designed to increase strength, improve muscle pumps, maximize endurance, and support hydration — giving you everything you need to push your limits in the gym.

How do you take NutraBio PRE Stim-Free?

Mix 1 serving (1 scoop) with 10-12 ounces of water and drink 20-30 minutes before exercising.

What are the side effects of NutraBio PRE Stim-Free?

NutraBio PRE Stim-Free is formulated with high-quality, clinically dosed ingredients and contains no stimulants, making it an excellent choice for those looking to avoid caffeine-related side effects like jitters or crashes. However, some individuals may experience mild tingling from beta-alanine, which is a normal and temporary effect. However, you may wish to use a ½ serving at first to assess your tolerance.

What can you stack with NutraBio PRE Stim-Free?

Since PRE Stim-Free contains no caffeine, it can be stacked with other supplements like creatine, amino acids, protein, thermogenics, and hydration products without the risk of overstimulation.