The 6 Best Pre-Workout Supplements (2026)
Dr. Torres evaluates sports supplements against current evidence-based research. She holds a PhD in nutritional biochemistry.
What's the best pre-workout supplement?
Transparent Labs BULK Black is best overall — every ingredient is at an evidence-based effective dose with full label transparency. For stimulant-free, their PUMP formula is equally strong. Budget pick: Bucked Up at $1.50/serving with NSF certification.
Most pre-workouts are underdosed marketing products. We evaluated 6 options against evidence-based effective dose thresholds for each ingredient.
Supplements are evaluated by Dr. Megan Torres, RDN, based on ingredient quality, dosing accuracy, third-party testing certifications, taste, and mixability. We verify label claims against published research. We do not accept payment for placement. Read our full testing methodology.
| Pre-Workout | Score | Price | Caffeine | Citrulline | 3rd Party |
|---|---|---|---|---|---|
| Transparent Labs BULK BlackTOP PICK | 9.1/10 | $59.99 / 30 servings | 275mg | 8g L-Citrulline | Informed Choice |
| Transparent Labs PUMP | 9/10 | $49.99 / 30 servings | 0mg | 8g L-Citrulline | Informed Choice |
| Legion Pulse | 8.8/10 | $44.99 / 20 servings | 350mg | 8g L-Citrulline | Labdoor A+ |
| Bucked Up Pre-Workout | 8.3/10 | $44.99 / 30 servings | 200mg | 6g L-Citrulline | NSF certified |
| Gorilla Mode | 8.7/10 | $49.99 / 40 servings | 175mg (2 scoops: 350mg) | 9g L-Citrulline | Self-tested |
| Onnit Total Strength + Performance | 7.9/10 | $64.95 / 20 servings | 150mg (green tea) | 3g L-Citrulline | Informed Sport |
Transparent Labs BULK Black
BULK Black from Transparent Labs is the best formulated pre-workout we've tested. Every ingredient is at or near evidence-based effective doses: 8g citrulline malate for pump, 3.2g beta-alanine for endurance, 2.5g betaine for power, and 275mg caffeine from two sources for sustained energy without a crash. Full label transparency and Informed Choice certification. This is what a properly formulated pre-workout looks like.
- ✓ Every ingredient at evidence-based effective doses
- ✓ Full label transparency — no proprietary blends
- ✓ Informed Choice certified
- ✓ 275mg caffeine from dual sources (sustained release)
- ✓ Excellent pump and endurance effects in testing
- × $59.99 is premium pricing
- × 3.2g beta-alanine causes tingling sensation for some
- × Not suitable for caffeine-sensitive individuals
Transparent Labs PUMP
PUMP is the best stimulant-free pre-workout for athletes who train in the evening, are caffeine-sensitive, or want to avoid dependency. The 8g citrulline, 2.5g betaine, and added VasoDrive-AP for blood flow create a genuine pump without any stimulants. We used this for 8 weeks and the vascularity and pump effects were comparable to caffeinated options.
- ✓ No caffeine — suitable for evening training
- ✓ Same pump formula as BULK Black
- ✓ Can be stacked with separate caffeine source
- ✓ No crash or sleep disruption
- ✓ Informed Choice certified
- × Harder to find motivation boost vs caffeine-containing options
- × Slightly less energy effect
- × Same price as caffeinated version
Legion Pulse
Legion Pulse uses 350mg caffeine per serving — higher than most and not for the faint-hearted. But if you've tried pre-workouts and found them underwhelming, the dose here actually delivers. The 3.6g beta-alanine is slightly above the standard threshold, and 8g citrulline matches the best. Labdoor A+ rating confirms label accuracy. The per-serving cost ($2.25 vs. $2.00 for TL) is slightly higher.
- ✓ 350mg caffeine is genuinely potent
- ✓ Labdoor A+ — verified label accuracy
- ✓ 8g citrulline and complete formula
- ✓ Natural ingredients and sweeteners
- ✓ Excellent flavor selection
- × 350mg is too much for caffeine-sensitive users
- × 3.6g beta-alanine produces significant tingling
- × $44.99 / 20 servings is slightly expensive per serving
Bucked Up Pre-Workout
Bucked Up is a solid, well-dosed pre-workout at a competitive price. The 200mg caffeine is a more accessible dose than the 275–350mg of premium options. The 6g citrulline is slightly below optimal (8g) but still clinically relevant. Good option for pre-workout beginners or athletes who want a moderate caffeine dose.
- ✓ 200mg caffeine — more accessible dose
- ✓ NSF certified
- ✓ Solid ingredient dosing
- ✓ Wide flavor selection
- ✓ Good price at $1.50/serving
- × 6g citrulline below optimal 8g dose
- × 2g betaine below optimal 2.5g dose
- × Less full formula than Transparent Labs
Gorilla Mode
Gorilla Mode has the highest citrulline dose on this list (9g per serving, 18g at double scoop) and adds nootropic compounds (L-tyrosine, kanna, huperzine A) for focus that goes beyond standard pre-workouts. The energy profile is different from purely caffeine-based products — more focused and clean-feeling. Derek from More Plates More Dates formulated it and the attention to dosing shows.
- ✓ 9g citrulline — highest pump dose on this list
- ✓ Nootropic formula for enhanced focus
- ✓ No beta-alanine (no tingling)
- ✓ Flexible single/double scoop dosing
- ✓ Very good value per serving at ~$1.25
- × No third-party testing certification
- × Proprietary nootropic blend has less transparency
- × Huperzine A needs cycling (don't use daily)
Onnit Total Strength + Performance
Onnit prioritizes natural, clean ingredients — 150mg caffeine from green tea extract, natural sweeteners, and earth-derived minerals. The trade-off is dosing: 3g citrulline and 2g beta-alanine are below optimal levels. For athletes committed to natural/clean products who find fully-dosed pre-workouts too intense, it's a reasonable compromise at Informed Sport certification.
- ✓ Natural caffeine from green tea
- ✓ Informed Sport certified
- ✓ Lower stimulant dose for caffeine-sensitive users
- ✓ Clean, minimal ingredients
- × Below optimal doses for key ingredients
- × $64.95 / 20 servings is expensive per serving
- × Less performance benefit vs. fully-dosed alternatives
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