Creator verdict: RecommendsTransparent Labs BULK Pre-Workout
Head-to-head · Pre-Workout
Transparent Labs BULK Pre-Workout vs Cellucor C4 Original Pre-Workout
Which pre-workout is better in 2026? FR Scores, specs, prices and 9 independent video reviews, side by side.
FR Score 9.0 out of 10, Exceptional
Clinically dosed, stevia-sweetened and Informed Choice certified
Typical price · 30-serving tub (about $1.67/serving) at transparentlabs.com
FR Score 8.1 out of 10, Great
The classic budget pre: under $1 a scoop, fun flavors and beginner-friendly doses
Typical price · 30-serving tub at Cellucor (about $1.17/serving)
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The quick verdict
Transparent Labs BULK Pre-Workout edges ahead with an FR Score of 9.0 vs 8.1, winning on formula & dosing, quality & transparency and taste & mixability. It’s our Best Overall, while C4 Original Pre-Workout is our Best Budget. C4 Original Pre-Workout is the cheaper pick by about $15.
Choose BULK Pre-Workout if…
- Fully disclosed formula with 8 g citrulline malate, 4 g beta-alanine and 2.5 g betaine
- Moderate 200 mg caffeine balanced with 200 mg L-theanine
- Informed Choice certified, with batch test results published
Choose C4 Original Pre-Workout if…
- Among the cheapest name-brand pre-workouts (about $0.62–$0.80 per serving)
- Moderate caffeine suits beginners (150–200 mg depending on formula)
- Wide flavor range and available almost everywhere
Scores
Score breakdown
Each criterion scored 0–10 by our methodology. The winner of each row is highlighted.
CriterionBULK Pre-WorkoutC4 Original Pre-Workout
FR Score (overall)
Formula & Dosing
Quality & Transparency
Taste & Mixability
Value per Serving
Typical price
Video reviews
Specs
Specs side by side
| Spec | BULK Pre-Workout | C4 Original Pre-Workout |
|---|---|---|
| Caffeine per serving | 200 mg (organic PurCaf) plus 50 mg theobromine | — |
| L-citrulline malate (2:1) | 8 g | — |
| Beta-alanine | 4 g | 2 g CarnoSyn (current label) |
| Betaine anhydrous | 2.5 g | — |
| Focus ingredients | 1 g L-tyrosine, 300 mg alpha-GPC, 200 mg L-theanine | — |
| Sweetener | Stevia (no artificial sweeteners or dyes) | — |
| Servings | 30 per tub | 30 per tub (60-serving tubs also sold) |
| Third-party testing | Informed Choice certified; batch results published | — |
| Caffeine | — | 200 mg on Cellucor's current label (older stock: 150 mg) |
| L-citrulline / L-arginine | — | 1.2 g / 1.2 g |
| Creatine nitrate | — | 1 g |
| Serving size | — | 8.9 g (about 1 level scoop) |
| Sweeteners | — | Sucralose, acesulfame potassium |
| Sugar and calories | — | 0 g sugar, 10 calories per serving |
BULK Pre-Workout: pros & cons
- Fully disclosed formula with 8 g citrulline malate, 4 g beta-alanine and 2.5 g betaine
- Moderate 200 mg caffeine balanced with 200 mg L-theanine
- Informed Choice certified, with batch test results published
- No artificial sweeteners, colors or flavors
- Stevia-sweetened flavors are milder than candy-style pre-workouts
- Pricier per serving than mass-market brands
- Strong beta-alanine tingles for newcomers
C4 Original Pre-Workout: pros & cons
- Among the cheapest name-brand pre-workouts (about $0.62–$0.80 per serving)
- Moderate caffeine suits beginners (150–200 mg depending on formula)
- Wide flavor range and available almost everywhere
- Includes clinically studied CarnoSyn beta-alanine
- Light citrulline and beta-alanine doses compared with premium formulas
- Two formulas on the market (150 mg vs 200 mg caffeine) can confuse buyers
- Uses sucralose and acesulfame potassium
- C4 Original has no sport certification (the separate C4 Sport line is on NSF's Certified for Sport list)
On video
What reviewers say
Creator verdict: RecommendsTransparent Labs BULK Pre-Workout
Creator verdict: RecommendsCellucor C4 Original Pre-Workout
Creator verdict: MixedCellucor C4 Original Pre-Workout
BULK Pre-Workout vs C4 Original Pre-Workout: FAQ
Is Transparent Labs BULK Pre-Workout better than Cellucor C4 Original Pre-Workout?
Transparent Labs BULK Pre-Workout scores higher overall (9.0 vs 8.1 out of 10), winning on formula & dosing, quality & transparency and taste & mixability. C4 Original Pre-Workout still has the edge on value per serving.
Which is cheaper, BULK Pre-Workout or C4 Original Pre-Workout?
At typical prices, Cellucor C4 Original Pre-Workout costs about $15 less ($49.99 vs $34.99). Sizes and deals vary, so check the current price at the retailer.
Which has more video reviews?
We’ve cataloged 5 independent video reviews of BULK Pre-Workout and 4 of C4 Original Pre-Workout. Both products’ pages list every review with the creator’s verdict.