Likely Safe Medium confidence

Cellucor C4 Sport Strength Pre Workout Powder - NSF Certified for Sport - Beta-Alanine, Creatine, 200mg Caffeine - Sugar Free Energy Supplement for Men & Women - Watermelon, 20 Servings

C4 ★★★★☆ 4.3 · 39 reviews

The product is labeled gluten-free and NSF Certified for Sport, which supports safety for many with celiac disease or gluten sensitivity. However, the complete ingredient list is not disclosed in the available sources, so confirmation of gluten safety should come from the labeling and NSF certification.

🌾 Gluten-free labeled ✓ NSF Certified for Sport
$27.99
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Celiac verdict
Likely safe
Confidence
Medium
Type
Protein powder
Size
14.18 ounce (pack of 1)
Price tier
Premium
Read
5 min
✅ Why it works
  • NSF Certified for Sport
  • Gluten-free labeling
  • Sugar-free formulation
  • Caffeine content and key actives (200 mg caffeine, beta-alanine, creatine)
  • Positive flavor and pump feedback in reviews
⚠ Keep in mind
  • Limited ingredient details disclosed in sources
  • Price variability across listings
  • Taste experience may vary initially

Gluten safety details

Labeled gluten-free
Yes
Certifications
NSF Certified for Sport
Ingredient risks
No gluten-containing ingredients disclosed in provided data.
Cross-contact notes
No explicit cross-contact or facility-sharing details provided in sources.

The product is labeled gluten-free and NSF Certified for Sport, which supports safety for many with celiac disease or gluten sensitivity. However, the complete ingredient list is not disclosed in the available sources, so confirmation of gluten safety should come from the labeling and NSF certification.

No explicit cross-contact or facility-sharing details provided Incomplete ingredient details in the available sources; verify labeling on packaging Lack of explicit allergen warnings beyond labeling

What to expect

Expect a sugar-free pre-workout with 200 mg caffeine per serving, plus beta-alanine and creatine, designed to support energy, endurance, and muscular performance. Flavor is Watermelon with 20 servings per container; flavor experience may vary, with some users noting improvement after several uses.

👍 Best for
  • Athletes or gym-goers seeking a sugar-free pre-workout with 200 mg caffeine and NSF certification.
  • Users who want beta-alanine and creatine in a single pre-workout formula.
  • Individuals looking for a watermelon-flavored option.
👎 Not ideal for
  • Caffeine-sensitive individuals or those avoiding 200 mg caffeine per serving.
  • Shoppers requiring full ingredient transparency or detailed allergen labeling from the product page.

The full guide

What this product is

Cellucor C4 Sport Strength Pre Workout Powder is a pre-workout supplement designed to support energy, endurance, and muscular performance during workouts. The formula is sugar-free and provides 200 mg of caffeine per serving, plus beta-alanine and creatine to support performance goals. It is offered in Watermelon flavor with 20 servings per container, and the product carries gluten-free labeling as well as NSF Certified for Sport.

Gluten safety and certifications

Gluten safety: The dataset notes gluten-free labeling and NSF Certified for Sport, suggesting compatibility with gluten-free needs for many individuals. Caution: The available sources do not disclose a complete ingredients list or explicit cross-contact or allergen details; verify on the product packaging and with the NSF certification when considering safety.

Taste, texture and use

Taste and mix: Reviews cited favorable flavor and pump from this watermelon formula, though initial taste experiences can vary among buyers. Use-case notes: With 200 mg caffeine per serving, this product is positioned as a higher-caffeine pre-workout; the inclusion of beta-alanine and creatine means some users may notice the typical tolerance and pump effects common to this supplement class. Note that the complete ingredient list is not disclosed in the available sources, so rely on the label and NSF listing for transparency.

Value, pricing and who it's for

Value and pricing: Amazon lists the product at $27.99 for 14.18 oz (20 servings); other retailer listings show around $21.50 with the same 20 servings, so price can vary by retailer. Best for: Athletes or gym-goers seeking a sugar-free pre-workout with 200 mg caffeine and NSF certification; those who want beta-alanine and creatine in a single formula; individuals looking for a watermelon-flavored option. Not ideal for: caffeine-sensitive individuals or those requiring full ingredient transparency or allergen labeling on the product page.

What shoppers say

💚 People liked

⚠ People flagged

Initial flavor may not meet expectations for all, with some noting taste improves after several uses
Lack of visible ingredient list and allergen details in sources
Price variability across listings could affect value perception

Key takeaways

  • NSF Certified for Sport label on the product
  • Sugar-free with 200 mg caffeine per serving
  • Gluten-free labeling; watermelon flavor; 20 servings
  • Complete ingredient list not disclosed in the sources; confirm labeling
How we assess this: Gluto summarizes manufacturer labeling, listing data, and community signals — it is not a medical guarantee. Always read the current label and confirm with the manufacturer before purchase, especially for celiac disease.

Evidence gaps for this product:
  • No disclosed complete ingredients list in provided sources.
  • No explicit allergen warnings or gluten-free certification documents beyond labeling in dataset.
  • No detailed cross-contact facility information from sources.
  • No independent lab testing data provided in the sources.
Likely Safe Cellucor C4 Sport Strength Pre Workout Powder - NSF Certified for Sport - Beta-Alanine, Creatine, 200mg Caffeine - Sugar Free Energy Supplement for Men & Women - Watermelon, 20 Servings $27.99
Buy on Amazon →