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C4 / Cellucor Super HD® supplement bottle
C4 / Cellucor

Super HD® Review

What We Researched
· 4 inactive ingredients decoded · 3 brand certifications checked · Page generated: Sep 2026
71
Product Score Fair
79
Brand Score Fair

Two independent scores — the product and the brand behind it, never blended into one number. See our methodology.

Product Analysis

Transparency Fair

Supplement Facts

No supplement facts data available.

Bioavailability N/A

Absorption Rating

No ingredient forms matched our reference database.

Other Ingredients Excellent

Fillers & Additives

  • Microcrystalline Cellulose
  • Capsule Shell
  • Magnesium Stearate
  • Silicon Dioxide
Efficacy N/A

Dosage Analysis

Dosage data not available for assessment.

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Capsule Shell Unknown
Magnesium Stearate Safe

Prevents ingredients from sticking to manufacturing equipment during tableting.

Silicon Dioxide Safe

Prevents clumping and ensures consistent dosing.

Brand Trust Report
C4 / Cellucor

Founded 2002 · Austin, Texas, USA · 60 products · cellucor.com/

Certifications

3 certifications
Health Canada Licensed Source available Primary evidence
Nsf Certified For Sport Source available Primary evidence
Fda Gmp Inspections Source available Primary evidence

Transparency

1 claim

Violation History

6 incidents
Lawsuit A $3 million class-action lawsuit against Nutrabolt regarding the caloric content of its XTEND workout powders was settled.2023 Source available Primary source
Lawsuit A lawsuit was filed alleging that Xtend BCAA supplements do not support muscle growth and recovery. This case was voluntarily dismissed. A separate lawsuit regarding the zero-calorie claims of XTEND powders was settled.2020 Source available Primary source
Prop 65 Lead, Cadmium2018-01-23 Source available Primary source
Lawsuit A lawsuit was filed against Nutrabolt for 'slack-fill' in its Cellucor C4 Pre-Workout powder containers, alleging the packaging was misleading.2018 Source available Primary source
Lawsuit A class-action lawsuit alleged false marketing claims regarding the efficacy of several Cellucor supplements.2016 Source available Primary source
Lawsuit A lawsuit was filed concerning the ingredient DMAA in C4 Extreme, alleging it was a synthetic drug and not a natural dietary supplement.2012 Source available Primary source
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Frequently Asked Questions
Is C4 / Cellucor Super HD® a good supplement?

C4 / Cellucor Super HD® received a product quality score of 71/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. with 60 servings per container. Of the 4 inactive ingredients, 3 are rated safe and 0 ingredients are flagged for review. The manufacturer, C4 / Cellucor, holds a brand trust score of 79/100.

Is C4 / Cellucor Super HD® safe to take?

GoodSupp reviewed the inactive-ingredient data available for C4 / Cellucor Super HD®. This label analysis cannot determine whether the product is safe for a particular person, and source labels may change. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is C4 / Cellucor a trustworthy supplement brand?

C4 / Cellucor receives a brand trust score of 79/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 2002 and headquartered in Austin, Texas, USA, the company offers 60 products in their lineup. Note: C4 / Cellucor has 6 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records — read our methodology. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.