Bestseller
4.66/5.0 1359 Reviews
STIM-FREE
NON CAFFEINATED PERFORMANCE FORMULA
Transparent Labs Stim-Free Pre-Workout is for gym-goers and active individuals who exercise later in the afternoon/evening and those who are sensitive to stimulants like caffeine. Alternatively, you ... View Ingredient Breakdown
Customer Reviews
It's not my favorite; this stuff makes me itch like crazy, especially on my forehead.
I keep this stocked in my cabinets. I take this on non workout days and if i'm working out late in the afternoon and need something without caffeine, phenomenal product, great pumps and focus.
Clean energy, gives me most of the benefit of Bulk without the caffeine for my evening workouts.
I work out in mornings, and I love my coffee before the gym. I found that doubling up on caffeine pushed my heart rate up at crossfit well beyond what it should on bigger cardio days. For me, the stim-free still gives all of the benefits without stressing out the body as much.... and I still get my coffee in the mornings.
Best product I’ve used in years. With this product, change in diet, I was able to lose 30 pounds, gain muscle mass and strength in 4 months and am in the best shape ever…at 53 years old.
Bestseller
Transparent Labs Stim-Free Pre-Workout is for gym-goers and active individuals who exercise later in the afternoon/evening and those who are sensitive to stimulants like caffeine. Alternatively, you might be taking a "stim break" and looking to cut back on caffeine. In either case, this non-stimulant pre-workout formula has you covered with an evidence-based lineup of clinically dosed ingredients, coming in at a whopping 17 grams per serving!
Combine that with fully transparent labeling, great flavor, and absolutely no artificial color/food dyes, artificial sweeteners, or artificial flavoring, and it's no wonder Stim-Free Pre-Workout has become a fan favorite.
Key Features
Stimulant-Free Pre-Workout Formula Backed by Science: Ideal for those sensitive to caffeine and nighttime gym-goers, Transparent Labs Stim-Free Pre-Workout is formulated with clinically effective dosages of ergogenic ingredients to enhance your athletic performance without stimulants.
- Enhances Strength, Stamina, and Muscle Pumps: With an unmatched blend of clinically dosed nitric oxide boosters, Stim-Free Pre-Workout bolsters muscle strength, endurance, and blood flow starting from the very first scoop.
- Promotes Clean, Lasting Focus, Drive, and Energy: Get dialed in for every workout with evidence-based nootropics like taurine, L-tyrosine, and huperzine-A. Since this is a stimulant-free formula, it won't give you jitters or cause a post-workout crash.
- Naturally Flavored and Sweetened with Stevia: Most non-stim pre-workouts are loaded with artificial colors, sweeteners, and flavors. We know you care about what you put in your body, so Stim-Free Pre-Workout contains only natural flavoring and stevia instead of the hidden junk you find in other pre-workout supplements.
- Third-Party Tested and Certified for Quality: As part of our commitment to industry-leading transparency and quality, every batch of this product is tested by a third-party lab for purity and potency. You can find all of our test results in the footer of our website. This product is also certified by Informed Choice to meet the highest standards for athletes and consumers.
No Artificial Sweeteners
No Artificial Coloring
Gluten-Free and Non-GMO
Customer Reviews
It's not my favorite; this stuff makes me itch like crazy, especially on my forehead.
I keep this stocked in my cabinets. I take this on non workout days and if i'm working out late in the afternoon and need something without caffeine, phenomenal product, great pumps and focus.
Clean energy, gives me most of the benefit of Bulk without the caffeine for my evening workouts.
I work out in mornings, and I love my coffee before the gym. I found that doubling up on caffeine pushed my heart rate up at crossfit well beyond what it should on bigger cardio days. For me, the stim-free still gives all of the benefits without stressing out the body as much.... and I still get my coffee in the mornings.
Best product I’ve used in years. With this product, change in diet, I was able to lose 30 pounds, gain muscle mass and strength in 4 months and am in the best shape ever…at 53 years old.
What is Stim-Free Pre-Workout Used For? | Our stim-free pre-workout is designed to increase power and endurance by improving blood flow and supporting muscle growth and recovery. It's ideal for those who train in the afternoon or evening or are sensitive to caffeine/stimulants. |
Is a Stim-Free Pre-Workout Better than a Stim-Based Pre-Workout? | Choosing between stim-free and stim-based pre-workout depends on your personal needs and tolerance for stimulants, notably caffeine. Many people admittedly love the jolt of wakefulness and increased vigilance that caffeine provides, and are more likely to perform well in the gym because of that. Obviously, the psychotropic rush you feel after taking a stim-based pre-workout will not be as apparent when taking a non-stim pre-workout. But if you work out later in the day, a stimulant-free pre-workout may be the better option so it doesn't interfere with your sleep. |
Will Stim-Free Pre-Workout Keep Me Up at Night? | No, this formula contains 100% non-stimulant ingredients and won't cause restlessness. |
Can You Take Stim-Free Pre-Workout Every Day? | Yes, it's safe to take our non-stim pre-workout daily as long as you adhere to recommended dosages. Our product is formulated with safe levels of each ingredient and is free from harmful additives, ensuring consistent performance benefits. |
How Does Non-Stim Pre-Workout Feel? | If you've never taken a pre-workout supplement, Transparent Labs Stim-Free will likely make you feel a little "tingly" under the skin for the first 15-20 minutes. This is due to the beta-alanine in the formula, but don't worry — it's harmless. You may also notice that your muscles feel and look fuller due to an increase in nitric oxide (which dilates the blood vessels). |
Does Non-Stim Pre-Workout Help Build Muscle? | It sure can; the ingredients in our Stim-Free Pre-Workout can help you train harder and longer, resulting in enhanced muscle gains (assuming you're eating a proper muscle-building diet). |
What is the Difference Between Transparent Labs Bulk, Lean, and Stim-Free Pre-Workouts? | Transparent Labs Bulk Pre Workout is designed to support lean muscle growth and includes testosterone-supporting micronutrients, while Lean is designed to support fat loss and includes a thyroid support complex while the Stim Free pre workout, as the name suggests, contains zero stimulants and has added elevATP® for energy production. |
I Don't Live in the United States, Can I Still Buy Transparent Labs Stim Free Pre Workout? | Yes - our fulfillment center allows us to ship worldwide (with some exceptions due to fraudulent activity in certain countries; see here for more info). Standard shipping for international orders typically takes 10-14 business days to arrive. |
Does this Product Contain Nuts? | No! While Transparent Labs Stim-Free Pre-Workout is manufactured in a facility that processes nuts (coconuts and peanuts), we have an allergen control program that requires sanitization and cleaning of the manufacturing equipment to avoid cross-contamination of allergenic and hypoallergenic materials. |
L-Citrulline Malate (2:1) |8,000 mg | L-citrulline is an amino acid naturally found in watermelon that plays an important role in kidney function. It's become a popular ingredient in pre-workout supplements due to its ability to boost nitric oxide levels [1]. When nitric oxide production increases, blood flow improves, allowing nutrients and oxygen to replenish muscle tissue more efficiently. Ultimately, this translates to greater muscle pumps and heightened energy levels. Numerous studies have demonstrated the ergogenic effects of L-citrulline malate, the citrulline salt of malic acid, such as: |
Beta-Alanine | 4,000 mg | Beta-alanine is a beta-amino acid that combines with L-histidine to form a dipeptide known as carnosine. Supplementing with beta-alanine has been shown to increase muscle carnosine levels, which are quickly depleted during intense exercise [6]. Carnosine is an endogenous dipeptide that functions as a buffer in muscle cells, thereby attenuating the accumulation of acidic byproducts of muscular exertion (e.g. lactate and hydrogen ions) [7]. Hence, bolstering muscle carnosine levels—via beta-alanine—allows you to push yourself longer and harder in the gym. Pre-workout supplements almost always contain beta-alanine but in inefficacious doses. We made sure to include an evidence-based dose of beta-alanine (2,000 mg) in every scoop of LEAN Pre-Workout. Relevant evidence-based benefits of beta-alanine include:
*Note that beta-alanine causes a benign tingling sensation known as paresthesia while the body acclimates to higher carnosine levels. This effect is harmless and gradually lessens with consistent use. |
BetaPure™ Betaine Anhydrous | 2,500 mg | Betaine, also known as trimethylglycine, is a biologically important osmolyte and methyl donor. Betaine supplementation has been shown to improve strength gains and, to a lesser extent, endurance capacity in athletes [13, 14, 15]. Though the mechanisms are not entirely clear, Pre-workout betaine use ostensibly promotes athletic performance by maintaining cellular hydration and reducing homocysteine levels, thereby supporting cardiovascular health [16]. |
Taurine | 1,300 mg | L-taurine is a non-proteinogenic amino acid often considered essential to pre-workout supplementation due to its diverse benefits for athletes and gym-goers. For one, taurine is a potent nootropic that promotes focus and attenuates brain cell inflammation and oxidative stress [17, 18]. Taurine can also enhance physical performance via increased blood flow to skeletal muscle tissue [19, 20]. Greater blood flow to muscle tissue encourages a favorable milieu for muscle function and recovery during training. |
L-Tyrosine | 1,000 mg | L-tyrosine is a conditionally essential amino acid and precursor to dopamine and norepinephrine, two neurotransmitters that govern motivation and reward. Research shows that supplementing with L-tyrosine can significantly enhance cognitive performance and increase alertness, especially under acute stress (such as intense training) [22]. L-tyrosine has also been shown to improve “cognitive flexibility,” meaning it can help you adapt to dynamic cognitive demands without letting extraneous thoughts undermine your focus [23]. |
Senactiv® 50mg | SenActiv® is a patented adaptogenic herb combination featuring Panax notoginseng and rose hips (Rosa roxburghii). The Panax notoginseng in SenActiv® is highly concentrated in ginsenoside R1, a beneficial constituent that helps accelerate muscle recovery and reduce fatigue during/after intense exercise. Likewise, the rose hips in this ingredient provide several ginsenoside-like molecules that confer synergistic recovery-enhancing effects with ginsenoside R1 [24]. These phytonutrients are suggested to work by bolstering a cellular "cleaning" process known as autophagy, particularly in skeletal muscle cells [25, 26, 27]. |
elevATP® Ancient Peat and Apple Fruit Extract | 150 mg | ElevATP® is a clinically researched combination of “ancient peat” (fossilized plants) and apple skin extracts. Using innovative biotechnology, elevATP® stimulates your body’s endogenous production of adenosine triphosphate (ATP), the veritable energetic currency of cells. By boosting ATP production, ElevATP® can help promote athletic performance (e.g. max strength) and improve body composition [28, 29]. ElevATP® is also a fast-acting ATP booster that starts working from the very first dose [30]. |
BioPerine® | 5 mg | BioPerine® is a patented black pepper (Piper nigrum) fruit extract standardized for its piperine content. Piperine is a natural alkaloid known for its “bioenhancer” properties, improving the bioavailability of molecules that are typically poorly absorbed or extensively metabolized in the liver [31, 32]. |
Huperzine A | 100 mcg | Huperzine A is a naturally occurring alkaloid found in the Chinese club moss Huperzia serrata. It has gained prominence in the world of cognitive enhancement for its ability to inhibit acetylcholinesterase, an enzyme that breaks down acetylcholine in the brain. Acetylcholine is a key neurotransmitter involved in muscle contraction, arousal, sleep, and cognition. By inhibiting its breakdown, huperzine A helps to maintain higher levels of cholinergic transmission, leading to improved mental focus, increased alertness, and better memory retention [33]. These effects make it a valuable addition to non-stim pre-workouts. |
Clinically Dosed, All Natural.
Science-Backed Formulas, Clinically Effective Dosages.
No Artificial Sweeteners, Fillers, or Dyes.
3rd-Party Lab Tested.
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