You love training hard, but caffeine wrecks you. Jitters, a racing heart, that afternoon crash, or a 9 p.m. workout that keeps you staring at the ceiling until midnight. If that sounds familiar, you're not alone, and you don't need stimulants to get a solid pump and real energy in the gym. The best pre workout supplements without caffeine rely on ingredients like citrulline, beta-alanine, and creatine to drive performance instead of adrenaline.
This list answers a simple question: which stim-free formulas actually work? We looked at clinically dosed ingredients and skipped anything relying on proprietary blends or fillers, so you get products that support blood flow, endurance, and strength without the crash.
Below you'll find nine options we rate highly, covering different needs from pure pump formulas to those blended for focus without stimulants. We'll break down what's in each one, who it's best suited for, and how it compares on value. And if you're managing your training alongside other health goals, remember RoenRx providers can help you build a plan around supplements, nutrition, and any underlying conditions affecting your energy or recovery.
1. Transparent Labs Stim-Free Pre-Workout
Transparent Labs built a name on full-label transparency, and their stim-free formula proves you don't need a proprietary blend to get real results. Every gram of every ingredient is printed on the label, which matters if you're stacking supplements with other treatments or just want to know exactly what you're putting in your body before a workout.
Key ingredients
This formula leans on clinically dosed citrulline malate (8g) for blood flow and pump, paired with betaine anhydrous (2.5g) for strength and power output. You also get 2.5g of beta-alanine for muscular endurance, plus a modest dose of L-tyrosine and alpha-GPC for mental focus without any stimulant kick.
| Ingredient | Dose | Purpose |
|---|---|---|
| Citrulline Malate | 8g | Blood flow, pump |
| Betaine Anhydrous | 2.5g | Strength, power |
| Beta-Alanine | 2.5g | Muscular endurance |
| L-Tyrosine | 300mg | Mental focus |
| Alpha-GPC | 150mg | Cognitive support |
A caffeine-free pre-workout only works if the doses match what's actually been studied, and Transparent Labs is one of the few brands that clears that bar on every ingredient.
Who it's for
Lifters who already get enough caffeine from coffee and don't want to layer on more stimulants will like this one. It also suits evening gym-goers who need a pump-focused formula that won't interfere with sleep, and anyone managing anxiety or a heart condition who's been told to watch stimulant intake. If you're unsure whether a supplement like this interacts with medication you're already taking, a quick check-in with a RoenRx provider can save you a guessing game.
Pricing
A 30-serving tub runs about $49.99 on the Transparent Labs site, which works to roughly $1.67 per serving. That's on the higher end for stim-free options, but the full-dose ingredient panel justifies the price if you're comparing cost per effective gram rather than cost per scoop. Subscribe-and-save options knock the price down further for repeat buyers, and the brand backs purchases with a straightforward return policy if the flavor or mix doesn't agree with you.
2. Swolverine PRE
Swolverine PRE takes a different approach than Transparent Labs by adding coconut water powder for hydration alongside the usual pump ingredients. It's built for athletes who train long sessions and need electrolyte support, not just a burst of blood flow, which makes it stand out in a crowded stim-free category.
Key ingredients
The formula centers on 6g of citrulline malate and 3.2g of beta-alanine, both dosed at levels backed by research rather than tucked into a blend. It also includes 2.5g of betaine anhydrous for power output and coconut water powder for electrolytes.
| Ingredient | Dose | Purpose |
|---|---|---|
| Citrulline Malate | 6g | Pump, blood flow |
| Beta-Alanine | 3.2g | Endurance |
| Betaine Anhydrous | 2.5g | Power, strength |
| Coconut Water Powder | 500mg | Hydration |
Adding electrolytes to a caffeine-free pre-workout addresses the sweat and fluid loss that stimulants often mask, which is exactly the gap Swolverine fills.
Who it's for
Endurance-focused lifters and anyone who trains in heat or sweats heavily will get the most from this formula. Swolverine also appeals to people who dislike artificial sweeteners, since the brand uses stevia and monk fruit instead of sucralose. If you're also managing hydration issues tied to a medical condition, it's worth mentioning your supplement stack during your next RoenRx visit.
Pricing
A 20-serving container costs about $34.99, putting it near $1.75 per serving. That's slightly above average for stim-free pre-workouts, though the added electrolyte blend offsets the cost if you'd otherwise buy a separate hydration product.
3. Jacked Factory Pumpsurge
Jacked Factory built Pumpsurge around one goal: the biggest pump possible without a single milligram of stimulant. Instead of spreading a formula thin across a dozen ingredients, this one goes deep on nitric oxide support, making it a favorite among lifters chasing visible muscle fullness and skin-splitting pumps during high-volume training.
Key ingredients
The standout here is 8g of L-citrulline (not citrulline malate, so you get more actual citrulline per scoop), plus glycerol powder for cell volumization and S7 blend for nitric oxide production. Betaine anhydrous rounds out the formula for strength support.
| Ingredient | Dose | Purpose |
|---|---|---|
| L-Citrulline | 8g | Nitric oxide, pump |
| Glycerol Powder | 3g | Cell hydration, fullness |
| S7 Blend | 50mg | NO production |
| Betaine Anhydrous | 2.5g | Strength |
When pump is the priority over endurance or focus, Pumpsurge's citrulline dose beats most competitors on paper and in the mirror.
Who it's for
Bodybuilders and physique athletes chasing that skin-tight, vascular look during training will notice the difference fastest. It also suits lifters who've tried other stim-free options and felt underwhelmed by the pump, since the glycerol addition pushes water into muscle tissue rather than just relying on blood flow alone. If you're combining this with a cutting phase or a weight loss program, it's worth discussing hydration needs with a RoenRx provider, since glycerol changes how your body handles fluid.
Pricing
A 20-serving tub runs about $39.99, or roughly $2 per serving, making it one of the pricier options on this list. The cost reflects the higher citrulline dose and glycerol addition, both of which push manufacturing costs up compared to simpler formulas.
4. 1st Phorm Endura-Formance
1st Phorm designed Endura-Formance around endurance and recovery rather than a short-lived pump, which sets it apart from the pure nitric oxide formulas earlier on this list. It's built more like a hybrid between a pre-workout and an intra-workout drink, so it holds up well during longer training sessions, not just heavy sets in the first twenty minutes.
Key ingredients
The formula runs on 6g of citrulline malate and adds a full electrolyte panel plus branched-chain amino acids for endurance support during extended workouts. Beta-alanine is present but at a lower 1.6g dose, which keeps the tingling sensation mild for people who dislike that side effect.
| Ingredient | Dose | Purpose |
|---|---|---|
| Citrulline Malate | 6g | Pump, blood flow |
| BCAAs | 5g | Endurance, recovery |
| Beta-Alanine | 1.6g | Mild endurance boost |
| Electrolyte Blend | 1g | Hydration |
A stim-free pre-workout built for endurance rather than a quick pump serves long training sessions better than any formula chasing maximum vascularity.
Who it's for
Endurance athletes, CrossFit competitors, and anyone doing circuit-style training will get more mileage here than from a pump-only formula. It also suits people who've had bad reactions to high beta-alanine doses and want that itchy tingling toned down. If your training volume has increased recently and you're managing fatigue alongside another condition, a RoenRx provider can help you figure out whether your recovery gaps are supplement-related or something else.
Pricing
A 30-serving tub costs about $44.99, landing near $1.50 per serving, which sits mid-range for this list. 1st Phorm sells directly through subscription pricing that lowers the cost further for repeat orders, and the brand's customer service is known for handling returns without much hassle.
5. Kaged Pre-Kaged Stim-Free
Kaged built its reputation on third-party tested ingredients, and the stim-free version of Pre-Kaged carries that same batch-tested quality without a single milligram of caffeine. Competitive athletes who face drug testing tend to gravitate toward this brand because every lot gets verified through Informed Choice, which matters if you can't risk a contaminated supplement showing up on a screening.
Key ingredients
The formula includes 6.5g of L-citrulline for pump alongside patented CarnoSyn beta-alanine at a full 3.2g clinical dose. It also adds BetaPower betaine and a dose of L-tyrosine, giving you strength support and mental clarity without any stimulant.
| Ingredient | Dose | Purpose |
|---|---|---|
| L-Citrulline | 6.5g | Pump, blood flow |
| CarnoSyn Beta-Alanine | 3.2g | Endurance |
| BetaPower Betaine | 1.5g | Strength |
| L-Tyrosine | 1g | Focus |
Third-party testing turns a caffeine-free pre-workout into something you can trust on a drug-tested roster, not just a gym shelf.
Who it's for
Competitive and tested athletes are the obvious fit here, but anyone who values ingredient verification over marketing claims will appreciate the transparency too. It also suits lifters sensitive to sweeteners, since Kaged uses a cleaner flavoring system than many budget brands. If you're balancing a training schedule with a chronic condition, loop your RoenRx provider in before adding another supplement to your routine.
Pricing
A 20-serving tub runs about $39.99, or roughly $2 per serving, placing it among the pricier stim-free options. The certified testing and full clinical doses justify that premium if purity matters as much as performance to you.
6. Nutricost Stim-Free Pre-Workout
Nutricost built its brand on stripped-down, no-frills supplements, and the stim-free pre-workout follows that same playbook. You won't find fancy patented ingredient names or a long list of add-ons here, just core pump and endurance compounds at doses that hold up against pricier competitors, making this one of the better values on this list.
Key ingredients
The formula runs on 6g of citrulline malate for blood flow and 3.2g of beta-alanine for muscular endurance, both dosed at research-backed amounts. It also includes 2g of betaine anhydrous for strength support, keeping the label short but functional.
| Ingredient | Dose | Purpose |
|---|---|---|
| Citrulline Malate | 6g | Pump, blood flow |
| Beta-Alanine | 3.2g | Endurance |
| Betaine Anhydrous | 2g | Strength |
Nutricost proves a caffeine-free pre-workout doesn't need extra ingredients to work, just the right doses of the ones that matter.
Who it's for
Budget-conscious lifters who still want clinically dosed ingredients will get the most value from this one. It also suits people newer to stim-free training who don't want to pay a premium while testing whether they even like training without caffeine. Anyone juggling a tight supplement budget alongside other health costs might find it easier to talk through their full spending picture, including medications and visits, with a RoenRx provider.
Pricing
A 30-serving tub costs about $24.99, which lands near $0.83 per serving, the cheapest option on this list by a wide margin. That price makes it an easy entry point if you're not ready to commit to a $2-per-serving formula before knowing if stim-free training suits you.
7. Gainful Caffeine-Free Pre-Workout
Gainful stands apart from every other brand on this list because it lets you customize your formula based on a quiz about your training style, body weight, and goals. Instead of buying a fixed blend off a shelf, you get a base pre-workout that Gainful adjusts before shipping, which appeals to lifters tired of guessing which stock formula fits their needs.
Key ingredients
The base formula centers on citrulline malate and beta-alanine at doses that shift slightly depending on your quiz answers, typically landing around 6g and 3g respectively. You can also add optional boosts like extra betaine or L-tyrosine, so the final label varies more than most competitors on this list.
| Ingredient | Typical Dose | Purpose |
|---|---|---|
| Citrulline Malate | 6g | Pump, blood flow |
| Beta-Alanine | 3g | Endurance |
| Betaine (optional add-on) | 1-2.5g | Strength |
| L-Tyrosine (optional add-on) | 300-500mg | Focus |
A personalized caffeine-free pre-workout only pays off if the base doses stay clinical once you start customizing, and Gainful mostly holds that line.
Who it's for
People who've tried several stock stim-free formulas and still feel like something's off will like the personalization angle here. It also suits anyone managing a specific goal, like recomping while training around a health condition, since the intake quiz asks relevant questions upfront. If your goals involve weight loss alongside strength training, a RoenRx provider can help make sure your supplement choices line up with any medication you're on.
Pricing
A month's supply runs about $45 to $55 depending on your customizations, landing near $1.50 to $1.83 per serving. That's mid-to-high range, though the personalization can justify the cost if stock formulas haven't worked for you.
8. Legion Pulse Stim-Free
Legion built Pulse around the same research-backed philosophy the brand applies to its stimulant version, just minus the caffeine. Every dose sits at or above the amount used in published studies, and Legion publishes its reasoning for each ingredient choice on the label itself, so you're not left guessing why a compound made the cut.
Key ingredients
The formula includes 8g of L-citrulline for pump, a full 3.6g of beta-alanine for endurance, and betaine anhydrous at a clinical 2.5g dose. It also adds Alpha-GPC for cognitive support, giving you a mental edge without any stimulant kick.
| Ingredient | Dose | Purpose |
|---|---|---|
| L-Citrulline | 8g | Pump, blood flow |
| Beta-Alanine | 3.6g | Endurance |
| Betaine Anhydrous | 2.5g | Strength, power |
| Alpha-GPC | 300mg | Focus |
A caffeine-free pre-workout earns trust when every dose matches the studies behind it, and Legion Pulse rarely falls short on that promise.
Who it's for
Lifters who want lab-level dosing without paying for patented ingredient names will appreciate this formula. It also suits anyone who values transparent sourcing, since Legion publishes third-party lab results for every batch online. If you're stacking Pulse with other supplements or medications tied to a chronic condition, a RoenRx provider can help you check for overlap before you start.
Pricing
A 20-serving tub costs about $39.99, or roughly $2 per serving, putting it near the top of this list on price. Legion offsets that with a subscription discount and a no-questions-asked refund policy if the formula doesn't work for you.
9. Cellucor C4 Stim-Free
Cellucor made C4 a household name in the stimulant category, and the stim-free version keeps that same familiar fizzy texture while dropping the caffeine entirely. It's the pick for lifters who grew up on the original C4 and want something that tastes and mixes the same way without the jitters, making it an easy transition rather than a total formula overhaul.
Key ingredients
The formula runs on 6g of citrulline nitrate, a form that pairs citrulline with nitrate for a dual pump pathway, plus 1.6g of beta-alanine and a small dose of betaine anhydrous. It's a lighter label than some competitors on this list, which keeps the price down but also means slightly lower doses across the board.
| Ingredient | Dose | Purpose |
|---|---|---|
| Citrulline Nitrate | 6g | Pump, blood flow |
| Beta-Alanine | 1.6g | Endurance |
| Betaine Anhydrous | 1.5g | Strength support |
Familiarity sells a caffeine-free pre-workout just as much as dosing, and C4 Stim-Free wins on brand trust even with a lighter label than some rivals here.
Who it's for
Casual gym-goers who want a recognizable name and don't need maximum-dose everything will be happy here. It also suits people newer to supplements who want a low-tingle beta-alanine dose while they get used to how their body responds. If you're new to training altogether and unsure how supplements fit into a broader health plan, a RoenRx provider can help you build that foundation before you start stacking products.
Pricing
A 30-serving tub costs about $29.99, or roughly $1 per serving, making it one of the more affordable options on this list. That price point, combined with wide retail availability, makes it easy to find in stores rather than ordering online and waiting on shipping.
Finding the right stim-free pre-workout for your routine
Picking from these nine options comes down to what you're actually training for. Chase pure pump with Pumpsurge or Legion Pulse, stretch your budget with Nutricost, or lean on Kaged if you're competing under drug-tested conditions. None of them rely on caffeine to get you moving, which means your energy, sleep, and heart rate stay under your control instead of a stimulant's.
What matters most is matching the formula to your body, not just your workout. The best pre workout supplements without caffeine still interact with medications, existing conditions, and other supplements you might already take, so don't treat that ingredient panel as risk-free just because it skips stimulants. If you're building a training plan around weight loss, mental health treatment, or another condition and want a provider who understands how supplements fit into that picture, book a visit with RoenRx and get a plan that actually accounts for what's in your gym bag.
