If you want a pre-workout that actually helps you train harder without blowing past your caffeine limit, you’ve got a lot of tubs to choose from.
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My top pick for most lifters is Transparent Labs Bulk, and I switch to Stim-Free depending on what time of day I’m training.
Those two are still my favorites. I like Bulk better than the stronger Bulk Black because it has less caffeine. That leaves me room for an extra coffee or energy drink during the day while I still stay under 400 mg of caffeine.
And Bulk doesn’t skimp on the rest. Every scoop gives you 200 mg of caffeine, 8 g of citrulline malate, 4 g of beta-alanine, and 2.5 g of betaine. It’s Informed Choice certified, sweetened with stevia, and has no artificial sweeteners.
Best for most lifters: moderate caffeine, Informed Choice
Training late or caffeine-sensitive? Go with Transparent Labs Stim-Free.
But Bulk isn’t right for everyone. Maybe you want to dial your caffeine up or down. Maybe you’re drug-tested, vegan, or done with artificial sweeteners. So below, I’ll match four pre-workouts to the situation you’re actually in.
I’ve used Bulk and Stim-Free myself. Legion Pulse and Kaged earn their spots on their labels and certifications. (Here’s how we review products.)
Key Takeaways
- Caffeine per full serving runs from 0 mg (Stim-Free) to 350 mg (Legion Pulse, 2 scoops). Bulk has 200 mg and Kaged has 274 mg.
- Three picks are certified for banned substances: Bulk and Stim-Free (Informed Choice) and Kaged (Informed Sport). Legion Pulse is tested by Labdoor, which is not a banned-substance certification.
- Beta-alanine builds up in your muscles over weeks. It doesn’t kick in from one scoop, and the evidence for it is mixed.
- Price per serving: $1.67 for both Transparent Labs picks, $2.25 for Kaged, and $2.50 for Legion Pulse.
- For most adults, 400 mg of caffeine a day from all sources is the general ceiling.
Quick Comparison: Label Doses vs the Evidence
| Pick | Best for | Caffeine | Citrulline | Beta-alanine | Betaine | Sweetener | Third-party testing | $/serving | Link |
|---|---|---|---|---|---|---|---|---|---|
| Transparent Labs Bulk | Moderate caffeine, most lifters | 200 mg* | 8 g citrulline malate (2:1) | 4 g | 2.5 g | Stevia | Informed Choice | $1.67 | Check price |
| Transparent Labs Stim-Free | Late training, caffeine-sensitive | 0 mg | 8 g citrulline malate (2:1) | 4 g | 2.5 g | Stevia | Informed Choice | $1.67 | Check price |
| Legion Pulse (2 scoops) | Adjustable caffeine dose | 350 mg (175 mg per scoop), plus 350 mg L-theanine | 8 g citrulline malate | 3.6 g | 2.5 g | Stevia, allulose, monk fruit | Labdoor-tested | $2.50 | Check price |
| Kaged Pre-Workout (Pre-Kaged) | Informed Sport, vegan | 274 mg | 6.5 g L-citrulline** | 1.6 g | 2.5 g | Sucralose and stevia | Informed Sport | $2.25 | Check price |
| What the evidence supports | — | 3–6 mg per kg of body weight | 8 g citrulline malate (about 4.5 g citrulline); evidence mixed | 4–6 g a day, in doses of 2 g or less, for at least 2 weeks | Studied at 2–5 g a day; no recommended dose | — | — | — | — |
*Bulk also has 50 mg of theobromine, which is a separate stimulant. It isn’t caffeine, so don’t add it to the 200 mg.
**Kaged uses plain L-citrulline, not citrulline malate. Its 6.5 g is about the citrulline you’d get from 11.5 g of citrulline malate, so don’t compare the grams one-to-one.
How to read the caffeine row: at 80 kg (about 176 lb), 3–6 mg per kg works out to 240–480 mg. Remember that the 400 mg daily ceiling covers all your caffeine, including coffee and energy drinks, not just your pre-workout.
Doses are per label serving as of October 15, 2026. Prices are one-time list prices and change, so check before you buy.
How I Chose These
I picked these four on five things:
- Label doses of the main ingredients
- Third-party testing, and whether it covers banned substances
- Sweetener
- Caffeine flexibility, from zero to adjustable
- Price per serving
You won’t see Transparent Labs Bulk Black here. Its caffeine figures don’t line up across Transparent Labs’ own pages, so I’ve covered it on my high-stim page instead. Ghost and Gorilla Mode didn’t make it either, because their full doses aren’t spelled out in text.
There are no star ratings. Each pick wins a situation, not a scorecard.
What Actually Matters in a Pre-Workout
Before you pick, here’s what I’d check on any label.
Caffeine per serving. This is the ingredient you’ll feel most. Match it to your tolerance and to how much coffee you already drink. Remember the whole-day ceiling of 400 mg for most adults.
Banned-substance certification. If you compete in a tested sport, look for Informed Choice or Informed Sport. “Third-party tested” alone doesn’t tell you the product was screened for banned substances.
Sweetener. If you avoid artificial sweeteners, check the ingredient list, not just the front of the tub. Kaged, for example, has no artificial flavors or colors but still contains sucralose.
Beta-alanine dose. It only helps if you take enough, every day, for weeks. The research-backed amount is 4–6 g a day, so a product with 1.6 g won’t get you there on its own.
Price per serving, not per tub. Kaged and Legion Pulse both come in 20-serving tubs, while both Transparent Labs picks have 30 servings. Divide the price by the servings before you compare.
Pick by Your Constraint
You Want Moderate Caffeine (and You Still Drink Coffee)
The pick: Transparent Labs Bulk.
This is exactly why Bulk is my go-to. If you’re a stim junkie chasing the highest doses, Bulk Black might be the better fit for you. I’d rather keep my pre-workout moderate, so I can safely have another coffee or energy drink later and still stay under 400 mg for the day.
Do the math. A scoop of Bulk is 200 mg, which leaves you 200 mg for everything else in your day before you reach 400 mg. Compare that with a full two-scoop serving of Legion Pulse at 350 mg, which leaves just 50 mg, or Kaged at 274 mg, which leaves 126 mg.
Check Transparent Labs Bulk price
You’re Caffeine-Sensitive or Train at Night
The pick: Transparent Labs Stim-Free.
It has the same 8 g of citrulline malate, 4 g of beta-alanine, and 2.5 g of betaine as Bulk, with zero stimulants. It has a permanent spot on my supplement shelf, and I switch between it and Bulk depending on what time of day I’m training.
Check Transparent Labs Stim-Free price
For more caffeine-free options, see my list of the best stim-free pre-workouts.
You Want to Adjust Your Dose
The pick: Legion Pulse.
One scoop gives you 175 mg of caffeine, and two scoops give you 350 mg. So you can start low and work up. Each full serving also pairs caffeine with the same amount of L-theanine, 350 mg.
You’re a Drug-Tested Athlete
The pick: Transparent Labs Bulk or Stim-Free (Informed Choice), or Kaged (Informed Sport).
All three carry a banned-substance certification. Legion Pulse is tested by Labdoor, but that is not a banned-substance certification. If you get tested, stick with the certified three.
Check Transparent Labs Bulk price
You Want No Artificial Sweeteners
The pick: Transparent Labs Bulk or Stim-Free, or Legion Pulse.
Both Transparent Labs picks are sweetened with stevia and have no artificial sweeteners. Legion Pulse uses stevia, allulose, and monk fruit.
Kaged isn’t in this group. It contains sucralose.
Check Transparent Labs Stim-Free price
More options here: best pre-workouts without artificial sweetener.
You’re Vegan
The pick: Kaged Pre-Workout (Pre-Kaged).
Kaged is vegan. If you’re looking at Legion Pulse instead, check the flavor, because Red Gummy Fish and Strawberry Blast contain a milk-derived creamer.
You Want the Lowest Cost Per Serving of These Four
The pick: Transparent Labs Bulk or Stim-Free, at $1.67 a serving.
That’s the lowest cost of these four, not the cheapest pre-workout out there.
You Want High Stims
None of these four is built for a high-tolerance lifter chasing the biggest caffeine hit. If that’s you, check out my best high-stim pre-workouts instead.
Training for something specific? I’ve also got picks for strength, fat loss, and beginners.
The Picks
Transparent Labs Bulk: My Top Pick for Most Lifters
Best for: lifters who want moderate caffeine, solid label doses, and banned-substance certification.
Label highlights (per scoop) – 200 mg caffeine, plus 50 mg theobromine (a separate stimulant) – 8 g citrulline malate (2:1), 4 g beta-alanine, 2.5 g betaine – 1.3 g taurine, 1 g L-tyrosine, 300 mg alpha-GPC, 200 mg L-theanine – Sweetened with stevia, with no artificial colors, sweeteners, or flavors – Informed Choice certified – 30 servings
What I noticed: I didn’t get jitters, anxiety, an upset stomach, or a crash from Bulk. But I’m used to caffeine. With this much stimulant, you’re more likely to get any of those side effects if you’re not.
So if you’re not used to caffeine, take that caution seriously.
Drawbacks – No creatine. Transparent Labs leaves it out because it believes caffeine may interfere with creatine, which isn’t settled science. You’ll need to take creatine separately. – 200 mg of caffeine is a lot if you’re not used to it. – The 50 mg of theobromine adds a little more stimulant on top.
Price: $49.99 for 30 servings, or $1.67 a serving.
Check Transparent Labs Bulk price
Read the full Transparent Labs Bulk review.
Transparent Labs Stim-Free: Best for Late or Caffeine-Free Sessions
Best for: evening training, caffeine-sensitive lifters, or anyone who already gets enough caffeine from coffee.
Label highlights (per scoop) – 0 mg caffeine; no stimulants at all – 8 g citrulline malate (2:1), 4 g beta-alanine, 2.5 g betaine – 1.3 g taurine, 1 g L-tyrosine, 150 mg elevATP, 50 mg SenActiv, 5 mg BioPerine, 100 mcg huperzine-A – Sweetened with stevia, with no artificial sweeteners – Informed Choice certified – 5 calories per 20.8 g scoop, 30 servings
Which one I grab comes down to what time of day I’m training.
Drawbacks – No caffeine, so if you want that stimulant kick, you won’t get it here.
Price: $49.99 for 30 servings, or $1.67 a serving.
Check Transparent Labs Stim-Free price
Read the full Transparent Labs Stim-Free review.
Legion Pulse: Best for Adjusting Your Dose
Best for: lifters who want to control their caffeine, scoop by scoop.
Label highlights (2 scoops) – 350 mg caffeine (175 mg per scoop) with 350 mg L-theanine – 8 g citrulline malate, 3.6 g beta-alanine, 2.5 g betaine, 300 mg alpha-GPC – Sweetened with stevia, allulose, and monk fruit – Tested by Labdoor – 20 full servings (about 40 scoops)
Drawbacks – Labdoor testing is not a banned-substance certification. – Red Gummy Fish and Strawberry Blast contain a milk-derived creamer, so those two flavors aren’t vegan. – A full two-scoop serving is 350 mg of caffeine, which takes up most of a 400 mg day. – 3.6 g of beta-alanine is a bit below the 4–6 g a day the research supports.
Price: $49.99 for 20 servings, or $2.50 a serving, as of October 22, 2026.
Kaged Pre-Workout (Pre-Kaged): Best for Informed Sport and Vegan Lifters
Best for: vegan lifters and athletes who want Informed Sport certification.
Label highlights (per scoop) – 274 mg natural caffeine – 6.5 g L-citrulline, 6.5 g BCAAs, 2.5 g betaine, 2 g taurine, 1.85 g L-tyrosine – 1.6 g beta-alanine and 1.5 g creatine HCl – Informed Sport certified and vegan – 20 servings
Drawbacks – Contains sucralose. – 1.6 g of beta-alanine is below the 4–6 g a day that the research supports. – Only 20 servings, at $2.25 a serving.
Price: $44.99 for 20 servings, or $2.25 a serving.
Do the Ingredients Work?
Caffeine: yes. Pre-workouts with caffeine improve performance, and the range that works is 3–6 mg per kg of body weight. For a 70 kg (about 154 lb) lifter, that’s 210–420 mg. Bulk’s 200 mg sits just under that, which is part of why it’s easy to fit around your coffee.
Beta-alanine: maybe, and only over time. Taking 4–6 g a day, split into doses of 2 g or less, for at least 2 weeks can improve hard efforts that last longer than about a minute, and the benefits grow after 4 weeks. The payoff gets smaller once an effort goes past