C4 is a pre-workout supplement marketed by Cellucor. The product claims to enhance energy, endurance, focus, and pumps, aiming to optimize gym performance and improve overall fitness outcomes.

2. Ingredient Justification:

The key ingredients in C4 include Beta-Alanine, Creatine Nitrate, Arginine AKG, and Caffeine Anhydrous. Beta-Alanine is commonly used in sports supplements for its potential to delay muscle fatigue, while Creatine Nitrate is a popular supplement known for its role in energy production during high-intensity workouts. Caffeine Anhydrous is a concentrated form of caffeine known to stimulate the central nervous system, boosting alertness and energy levels. These ingredients align with C4's claims and are supported by scientific rationale.

3. Recommended Dosage:

For Beta-Alanine, a commonly recommended dosage is between 2-5 grams per day. This falls within the 1.6 grams per serving provided in C4, although the lower end.

4. Clinical Trial Evidence:

A study by Hobson et al. (2012) found that Beta-Alanine supplementation can significantly enhance muscular endurance during high-intensity exercise. Similarly, a study by Spillane et al. (2012) demonstrated that Creatine Nitrate supplementation can significantly increase plasma creatine levels, potentially enhancing exercise capacity. Lastly, a study by McLellan et al. (2016) showed that caffeine can enhance cognitive and physical performance, supporting the use of Caffeine Anhydrous in C4.

5. Brand Transparency and Credibility:

Cellucor, the company behind C4, has been in the supplement industry for over a decade and is known for its transparency about ingredients. The founder and CEO are not prominently displayed on their website, but they do emphasize their product testing, quality assurance, and commitment to science and innovation.

6. Summary Verdict:

Overall, C4 appears to be a credible pre-workout supplement, with key ingredients supported by scientific evidence. However, the dosages of some ingredients, like Beta-Alanine, are on the lower end of the recommended range. Consumers should consider their individual tolerance and workout intensity when deciding on the appropriateness of this supplement.