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GGR Score: 4.2
Product Highlights
- Pre-workout supplement with 300 mg of caffeine
- 4 available flavors
- Contains beta-alanine, L-citrulline, creatine, and taurine
- Claims to help improve alertness, muscular performance, and muscular endurance
In-Depth Review
C4 Ultimate Pre-Workout Review (2025): Is This Amped-Up Supplement Worth the Price?
Author: Lindsay Boyers, CN
For our C4 Ultimate Pre-Workout review, we asked personal trainer, USAW-L2, and unofficial pre-workout expert Jacob Penner his opinion on this formidable product.
Read the full review.
Pros & Cons
Pros
- 300 mg of caffeine
- No artificial dyes or flavors
- Subscription option to save
- Contains beta-alanine and L-citrulline
Cons
- Expensive price per serving
- Not NSF Certified for Sport
Specs
| Caffeine | 300 mg |
|---|---|
| Third-party Tested | No |
| Beta-Alanine | 3.2 g |
| Flavors | 3 flavors |
| Rating | 4.2 |
| Citrulline | 3 g |
| Serving Size | 20 g |
| Price Per Serving | $2.25 |
| Nickname | C4 Ultimate |
Product Summary
If you’re looking for a pre-workout to help you through low-energy days, C4 Ultimate Pre-Workout could be a good choice with a whopping 300 milligrams of caffeine per serving. At $45 for 20 servings, it’s a fairly pricey pre-workout, although there is an option to subscribe and save 30%—plus free shipping. Along with this, C4 Ultimate has pre-workout staples like beta-alanine, L-citrulline, and taurine. This pre-workout is available in four different flavors.
