Pre-Workout (typical serving) contains 254 mg of caffeine per 1 serving (typical). That is about 2.7 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg).
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Pre-Workout (typical serving) Caffeine Content by Serving
Figures are for Pre-workout supplements (typical range) (Category average, multiple brands).
| Serving | Volume | Caffeine | Per 100 ml | Level |
|---|---|---|---|---|
| 1 serving (typical) | - | 254 mg | - | High |
Source: caffeine figures from Jagim et al. 2019, Common Ingredient Profiles of Multi-Ingredient Pre-Workout Supplements (Nutrients), accessed 2026-06-11. Values can vary by batch, location, and preparation; check the label or the source for the latest figures.
How Pre-Workout (typical serving) Compares to Coffee
At 254 mg per 1 serving (typical), Pre-Workout (typical serving) delivers about 2.7 times the caffeine of a typical 8 oz cup of brewed coffee (about 95 mg). For a wider comparison across drinks, try the caffeine comparison tool or browse the full caffeine database.
When to Stop Taking Pre-Workout (typical serving) Before Bed
With caffeine's median 5-hour half-life, one serving (typical) of Pre-Workout (typical serving) (254 mg) needs about 11 h 44 min to fall under 50 mg, the level where most people can fall asleep normally. That puts the last call at 10:15 AM (10:15) for a 10 PM bedtime and 11:15 AM (11:15) for an 11 PM bedtime. Individual half-lives range from roughly 2 to 12 hours, so treat these as a starting point.
The Pre-Workout (typical serving) sleep cutoff page has last-call times for four bedtimes, and the caffeine half-life calculator personalizes the curve to your metabolism.
