Beta-Alanine Not classified
No linked studies yet.
$39.95 $1.99 per serving
Product analysis
C4 Ultimate Strawberry Watermelon offers short-term alertness and exercise support, mainly from caffeine. Combining several stimulants is a meaningful drawback for people sensitive to stimulation.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality27
A few ingredient forms are named, but their quality cannot be judged confidently. Most forms and the combination-blend components are unspecified, adding uncertainty.
Ingredient Transparency58
Listed ingredient and blend totals are disclosed. Most forms and the blend components remain unclear, preventing a complete comparison.
Value For Money32
The serving price is high compared with similar products, and the huperzine comparison also offers poor value. Value for most remaining ingredients is uncertain.
Customer Satisfaction72
Customer ratings lean positive but are less enthusiastic. Several hundred reviews provide a useful, though still limited, satisfaction picture.
Product Focus31
Caffeine provides the clearest support for immediate alertness and exercise performance. The 300 mg serving and additional stimulants raise jitteriness and stimulant-combination concerns, while broader cognitive and weight-loss benefits remain uncertain.
- Format
Powder - Container
- 340 Gram(s)
- Per serving
- $1.99
- Customer rating
- 4.4 · 744 ratings
Goals
Impact
High effect
Creatine · 1 Gram(s)Caffeine · 300 mgBeta-Alanine · 3.2 Gram(s)
Beta-Alanine Not classified
No linked studies yet.
Taurine Not classified
No linked studies yet.
Impact
High effect
Creatine · 1 Gram(s)Huperzine · 50 mcgAlpha-GPC · 200 mgCaffeine · 300 mg
Impact
High effect
Creatine · 1 Gram(s)Caffeine · 300 mg
Impact
Moderate effect
Creatine · 1 Gram(s)Caffeine · 300 mg
Impact
High effect
Alpha-GPC · 200 mgCreatine · 1 Gram(s)Caffeine · 300 mgHuperzine · 50 mcg
Huperzine Not classified
No linked studies yet.
L-Tyrosine Not classified
No linked studies yet.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 5 Calorie(s) | |
Total Carbohydrates | 1 Gram(s) | |
C4 Super Citrulline Pump Matrix | 6 Gram(s) | |
CarnoSyn (Beta-Alanine) | 3.2 Gram(s) | |
Creatine Hydrochloride | 1 Gram(s) | |
Creatine Nitrate (NO3-T) | 1 Gram(s) | |
Taurine | 1 Gram(s) | |
N-Acetyl-L-Tyrosine | 400 mg | |
Caffeine Anhydrous | 300 mg | |
AlphaSize 50% A-GPC | 200 mg | |
Theacrine | 62.5 mg | |
Rauwolfia vomitoria root extract | 1 mg | |
Huperzine A (Toothed Clubmoss extract) | 50 mcg |
Huperzine (Toothed Clubmoss extract) · 50 mcg OverallScore63
50 mcg of Huperzine A per serving falls in the range most associated with cognitive focus, and the cost for that amount is high. The plant extract is named, but its concentration is unclear. Cycling instructions are not available.
How this ingredient is rated
Active Ingredient Quality & Bioavailability60
Huperzia serrata extract is listed, but its Huperzine A concentration is not given.
Source and Standardization Clarity
Huperzia serrata extract is listed, but its Huperzine A concentration is not given.
Dose, Safety & Label Transparency88
50 mcg of Huperzine A per serving falls in the range most associated with cognitive focus. Cycling instructions are not available.
Huperzine A Dosage Efficacy
50 mcg of Huperzine A per serving falls in the range most associated with cognitive focus.
Cycling Guidance and Transparency
The Huperzine A amount is stated, but cycling instructions are not available.
Value20
The cost is high for the amount of Huperzine A.
Price per 100mcg of Huperzine A
The cost is high for the amount of Huperzine A.
Caffeine · 300 mg OverallScore47
C4 Ultimate Strawberry Watermelon has a very high cost per serving. The stated caffeine amount is 300 mg per serving. A potent secondary stimulant is indicated alongside high caffeine, but its identity and amount are unclear; the combination raises concern.
How this ingredient is rated
Active Ingredient Quality & Bioavailability40
Caffeine is identified, but its specific source or form is unclear in the available information.
Advanced Bioavailability and Release Profiles
Caffeine is identified, but its specific source or form is unclear in the available information.
Dose, Safety & Label Transparency72
The stated caffeine amount is 300 mg per serving. A potent secondary stimulant is indicated alongside high caffeine, but its identity and amount are unclear; the combination raises concern.
Caffeine Dose Transparency
The stated caffeine amount is 300 mg per serving.
Dosage Efficacy and Safety Margin
300 mg per serving is a strong caffeine amount.
Secondary Stimulant Disclosure and Risk
A potent secondary stimulant is indicated alongside high caffeine, but its identity and amount are unclear; the combination raises concern.
Value10
The cost per serving is very high.
Price Per Serving vs. Collection Median
The cost per serving is very high.
Alpha-GPC · 200 mg OverallScore57
The serving lists 100 mg Alpha-GPC. The estimated cost per amount of Alpha-GPC is high. The named source is AlphaSize.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The named source is AlphaSize.
Patented/Branded Form and Source
The named source is AlphaSize.
Dose, Safety & Label Transparency38
The serving lists 100 mg Alpha-GPC. A separate active yield percentage is not stated.
Active Alpha-GPC Dosage
The serving lists 100 mg Alpha-GPC.
Label Transparency & Yield Disclosure
A separate active yield percentage is not stated.
Value10
The estimated cost per amount of Alpha-GPC is high.
Price per 300mg Active Alpha-GPC
The estimated cost per amount of Alpha-GPC is high.
Alternative products
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Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Activity of Choline Alphoscerate on Adult-Onset Cognitive Dysfunctions: A Systematic Review and Meta-Analysis.
- Comparative study of choline alfoscerate as a combination therapy with donepezil: A mixed double-blind randomized controlled and open-label observation trial.
- Effects of choline alfoscerate on cognitive function and quality of life in type 2 diabetes: A double-blind, randomized, placebo-controlled trial.
- Acute Alpha-Glycerylphosphorylcholine Supplementation Enhances Cognitive Performance in Healthy Men.
- Cognitive improvement in mild to moderate Alzheimer's dementia after treatment with the acetylcholine precursor choline alfoscerate: a multicenter, double-blind, randomized, placebo-controlled trial.
- Oral creatine monohydrate supplementation improves brain performance: a double-blind, placebo-controlled, cross-over trial.
- Creatine in Huntington disease is safe, tolerable, bioavailable in brain and reduces serum 8OH2'dG.
- Creatine supplementation and cognitive performance in elderly individuals.
- Effects of high-load, velocity-intentional variable resistance training combined with creatine supplementation on neuroplasticity, oxidative stress, inflammation, physical function, cognitive performance and quality of life in older adults: A randomized, double-blind, placebo-controlled trial.
- Single-Dose Creatine Reduces Sleep Deprivation-Induced Deterioration in Cognitive Performance.
- Huperzine a in the treatment of Alzheimer's disease and vascular dementia: a meta-analysis.
- [Clinical efficacy and safety of huperzine Alpha in treatment of mild to moderate Alzheimer disease, a placebo-controlled, double-blind, randomized trial].
- Huperzine A associated with improved early postoperative cognitive function after neurosurgery under general anesthesia: a randomized clinical trial.
- Treatment with Huperzine A improves cognition in vascular dementia patients.
- Huperzine-A response to cognitive impairment and task switching deficits in patients with Alzheimer's disease.
- [Gliatilin in the Treatment of Cognitive Impairments Not Reaching the Level of Dementia: Meta-Analysis and Systematic Review].
- Vertical Association Between Dietary Total Choline and L-alpha-glycerylphosphorylcholine and the Cognitive Function in Chinese Adults Aged over 55, Result from China Health and Nutrition Survey 1997-2018.
- Effects of Creatine Monohydrate Loading on Sleep Metrics, Physical Performance, Cognitive Function, and Recovery in Physically Active Men: A Randomized, Double-Blind, Placebo-Controlled, Crossover Trial.
- Creatine supplementation enhances corticomotor excitability and cognitive performance during oxygen deprivation.
- The effects of creatine supplementation on cognitive performance-a randomised controlled study.