Head to head · Pre-Workout
Legion Pulse Pre-Workout vs Transparent Labs BULK Pre-Workout
Transparent Labs scores higher overall (8.5 vs 8.3 out of 10), mainly on quality & purity and value. Legion still leads on experience.
Updated September 2026 from our full reviews · How we score
Fully dosed and naturally sweetened: 8 g citrulline malate, 3.6 g beta-alanine and a hefty 350 mg of caffeine balanced by 350 mg of L-theanine.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
A fully transparent, Informed Choice-certified pre-workout with 8 g citrulline malate, 4 g beta-alanine and a moderate 200 mg of natural caffeine.
We may earn a commission when you buy through these links — it never affects our scores. How we make money
We may earn a commission when you buy through these links — it never affects our scores. How we make money
The short answer
Choose Legion if…
- Experienced lifters who tolerate high caffeine
- People avoiding artificial sweeteners and dyes
- Buyers who value independent lab testing
- You care most about experience
Choose Transparent Labs if…
- Daily training with moderate caffeine
- Label-readers who want clinical doses
- Athletes who want a certified product
- You care most about quality & purity, value
- You want the lower cost per serving ($1.67)
Side by side
| Pulse Pre-Workout | BULK Pre-Workout | |
|---|---|---|
| Our score | 8.3 / 10 | 8.5 / 10 |
| Efficacy (30%) | 8.8 | 8.8 |
| Quality & Purity (25%) | 8.5 | 9.0 |
| Value (20%) | 7.0 | 8.0 |
| Experience (15%) | 8.2 | 7.4 |
| Transparency (10%) | 9.3 | 9.4 |
| Form | Powder | Powder |
| Serving | 2 scoops20 servings per container | 1 full scoop30 servings per container |
| Price per serving | $2.50 | $1.67 |
| Testing & certifications | Third-party testedcGMP facility | Informed Choice |
| Dietary | Sugar-free | — |
| Key ingredients |
|
|
| Flavors | 8 (Blue Raspberry, Fruit Punch, Arctic Blast…) | 8 (Blue Raspberry, Black Cherry, Strawberry Kiwi…) |
| Creator video reviews | 3 | 5 |
Pros and cons
Pulse Pre-Workout
- Clinical doses of citrulline malate (8 g), beta-alanine (3.6 g) and betaine (2.5 g)
- 1:1 caffeine to L-theanine ratio for smoother energy
- Naturally sweetened (stevia, erythritol) with no artificial dyes
- Labdoor-tested for purity and label accuracy; made in NSF-certified cGMP facilities
- Very wide flavor range (more than 20 flavors on Amazon)
- 350 mg caffeine per full serving is too strong for many people
- About $2.50 per full serving at the regular price
- No sport-specific certification such as NSF Certified for Sport or Informed Sport
- Amazon listing carries a California Prop 65 warning for lead
BULK Pre-Workout
- Clinical doses of citrulline malate (8 g), beta-alanine (4 g) and betaine (2.5 g)
- Moderate 200 mg natural caffeine paired with 200 mg L-theanine
- Informed Choice certified (per the brand) with published third-party COAs
- No artificial sweeteners, colors or preservatives
- Wide flavor range (13 flavors on the brand site)
- Stevia-sweetened flavors are divisive; several reviewers call it hard to drink
- About $1.67 per serving, more than mass-market pre-workouts
- Boron and zinc "testosterone support" has weak evidence in healthy lifters
- Amazon listing carries a California Prop 65 warning for lead
Our verdicts
Pulse Pre-Workout
Pulse is an excellent choice for experienced lifters who want clinically dosed ingredients, independent lab testing and no artificial sweeteners. The 350 mg caffeine serving is strong, so most people should start with one scoop, and the regular price is high unless you catch a sale.
Full review
BULK Pre-Workout
BULK is one of the best-formulated and most trustworthy pre-workouts available: clinical doses, published test results and a moderate caffeine load that suits daily training. The stevia-sweetened flavors are its main weakness, so expect a stronger, less candy-like taste than mainstream brands.
Full review