Pre-workout
Caffeine in C4 Original Pre-Workout
150mg
per serving
≈ 2 coffees≈ 2 Red Bulls38% of FDA daily max
Is that a lot?
C4 Original Pre-Workout is 38% of the FDA’s recommended daily maximum, in a single serving.
Green tea
Espresso
Red Bull
Coffee
C4 Original Pre-Workout
FDA daily max · 400mg
Before bed
When can I drink C4 Original Pre-Workout and still sleep?
Your C4 Original Pre-Workout cutoff
You drink it at
Bedtime
C4 Original Pre-Workout · 150 mg · assuming an average ~5 h half-life
At bedtime
49 mg
should be fine
Latest safe C4 Original Pre-Workout: 3:05 PM
How much caffeine is in C4 Original Pre-Workout?
A scoop of C4 Original Pre-Workout carries about 150 mg of caffeine anhydrous, the equivalent of roughly two cups of coffee. It's designed to hit fast for a focused, energetic training session.
| Serving | Caffeine | Sugar |
|---|---|---|
| serving | 150 mg | 0 g |
Per 1 scoop; caffeine anhydrous.
Will C4 Original Pre-Workout affect your sleep?
From 150 mg, C4 needs around eight hours to fall under 50 mg, so a late-afternoon scoop can still be active at bedtime. If you train in the evening, this dose can stand between you and sleep.
Heads up
At 150 mg, a second C4 Original Pre-Workout in a day pushes you toward the FDA’s 400 mg ceiling — and that’s before any coffee or tea. Log everything in the calculator to see your real daily total.
Source: Cellucor official label