$29.99 $0.99 per serving
Product analysis
C4 Original Watermelon may help support repeated intense exercise through beta-alanine used regularly over weeks. An undisclosed blend makes it harder to know everything you are taking.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality42
Several ingredient forms are unspecified, limiting comparisons with other supplements. Niacin is clearly identified as niacinamide, while the quality of several other named forms remains uncertain.
Ingredient Transparency63
Most amounts and more than half the ingredient forms are stated. The undisclosed blend still prevents you from checking all its individual ingredients.
Value For Money35
The serving is costly if niacin or folate is your main reason for buying it. Value for much of the remaining formula is uncertain, so the full mix has no clear price advantage.
Customer Satisfaction84
Customer ratings are generally positive. A large number of ratings provides a broad view of customer satisfaction.
Product Focus34
The formula targets exercise energy, with beta-alanine potentially helping fatigue resistance after regular use over weeks. Vitamins mainly help when intake is low, and the caffeine content is too uncertain to judge an immediate alertness effect.
- Format
Powder - Container
- 195 Gram(s)
- Per serving
- $0.99
- Also available
C4 Original Pink Lemonade$35.39- Customer rating
- 4.6 · 2,997 ratings
Goals
Impact
High effect
Vitamin B12 · 35 mcg
Beta-Alanine Not classified
No linked studies yet.
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Calories | 0 Calorie(s) | |
Total Carbohydrates | 1 Gram(s) | |
Vitamin C (Ascorbic Acid) | 250 mg | |
Niacin (Niacinamide) | 30 mg | |
Vitamin B6 (Pyridoxal 5-Phosphate) | 500 mcg | |
Folic Acid | 250 mcg | |
Vitamin B12 (Methylcobalamin) | 35 mcg | |
Calcium (Calcium Silicate) | 24 mg | |
CarnoSyn (Beta-Alanine) | 1.6 Gram(s) | |
NO3-T (Creatine Nitrate) | 1 Gram(s) | |
Arginine Alpha Ketoglutarate | 1 Gram(s) | |
Explosive Energy Blend | 425 mg |
Niacin (Niacinamide) · 30 mg OverallScore65
Each serving provides 30 mg of niacin. The serving price is high when attributed to this ingredient alone; that may overstate its cost. It uses niacinamide.
How this ingredient is rated
Active Ingredient Quality & Bioavailability86
It uses niacinamide.
Niacin Form & Goal Alignment
Niacinamide is the stated form.
Precursor Source Quality
The stated source is niacinamide.
Dose, Safety & Label Transparency67
Each serving provides 30 mg of niacin. No no-flush claim is recorded.
Clarity of Chemical Form
The form is disclosed as Niacinamide.
Form-Specific Dosage Efficacy
Each serving provides 30 mg of niacin.
Flush Risk & Safety Labeling
No no-flush claim is recorded.
Value20
The serving price is high when attributed to this ingredient alone; that may overstate its cost.
Price Per Effective Serving
The serving price is high when attributed to this ingredient alone; that may overstate its cost.
Arginine Alpha Ketoglutarate · 1 Gram(s) OverallScore48
The stated amount is 1 g per serving. The whole-product cost relative to the stated amount is fairly high. Arginine alpha-ketoglutarate is named without an L-isomer designation.
How this ingredient is rated
Active Ingredient Quality & Bioavailability50
Arginine alpha-ketoglutarate is named without an L-isomer designation.
AAKG Molecular Form and Isomer Specificity
Arginine alpha-ketoglutarate is named without an L-isomer designation.
Dose, Safety & Label Transparency50
The stated amount is 1 g per serving.
AAKG Dosage Potency and Transparency
The stated amount is 1 g per serving.
Value40
The whole-product cost relative to the stated amount is fairly high.
Price per Gram of AAKG
The whole-product cost relative to the stated amount is fairly high.
Folate · 250 mcg OverallScore50
The serving provides 250 mcg folic acid at a relatively high cost. It uses folic acid, which requires several conversion steps in the body.
How this ingredient is rated
Active Ingredient Quality & Bioavailability14
It uses folic acid, which requires several conversion steps in the body. No branded source or active-isomer marker is recorded.
Folate Form Hierarchy
It uses folic acid, which requires several conversion steps in the body.
Patented Sources & Isomeric Purity
No branded source or active-isomer marker is recorded.
Dose, Safety & Label Transparency100
The serving lists 250 mcg folic acid, equivalent to 425 mcg DFE by the labeling conversion.
Folate Dosage by Declared Basis
The serving lists 250 mcg folic acid, equivalent to 425 mcg DFE by the labeling conversion.
Value20
The cost per serving is relatively high.
Price per Bioavailable Serving
The cost per serving is relatively 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.
- Pharmacokinetics, safety, and effects on exercise performance of L-arginine alpha-ketoglutarate in trained adult men
- Synergistic effects of creatine, carbs, protein on repeated sprint performance.
- The Effects of Creatine Monohydrate Supplementation on Recovery from Eccentric Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial Considering Sex and Age Differences.
- The Effect of Prior Creatine Intake for 28 Days on Accelerated Recovery from Exercise-Induced Muscle Damage: A Double-Blind, Randomized, Placebo-Controlled Trial.
- Creatine supplementation attenuates the rate of fatigue development during intermittent isometric exercise performed above end-test torque.
- The effect of continuous low dose creatine supplementation on force, power, and total work.
- A new perspective on vitamin B12 deficiency in rheumatology: a case-based review.
- Effects of Vitamin B12 Supplementation on Cognitive Function, Depressive Symptoms, and Fatigue: A Systematic Review, Meta-Analysis, and Meta-Regression.
- Patients' experiences with methylcobalamin injections in amyotrophic lateral sclerosis.
- Cobalamin deficiency: clinical picture and radiological findings.
- Vitamin B12 Deficiency: Common Questions and Answers.