
AI-estimated changes in effects over the first 3 hours after taking 1 serving.
| Ingredient | Clinically effective dose | Dose in Monster Zero Ultra Energy Drink | Status |
|---|---|---|---|
| Taurine | 2–3 g | 1 g | 50%Under-dosed |
| Carnitine (Tartrate) | 2 g | 0.07 g | 4%Under-dosed |
| Caffeine (actual caffeine) | 200–400 mg | 140 mg | 70%Moderate dose |
| Sodium (elemental, hydration) | 0.3–1 g | 0.37 g | Hydration support |
A modest 140mg caffeine dose backed by a real, industry-standard taurine amount and a light dose of L-carnitine.
Genuinely low-calorie and sugar-free, but not built to deliver any pump, strength, or endurance benefit.
Honest take: A genuinely mild, budget option, fine if you want low-calorie caffeine and nothing else.
Effects of Caffeine Intake on Endurance Running Performance and Time to Exhaustion: A Systematic Review and Meta-Analysis
Does One Shot Work? The Acute Impact of a Single Taurine Dose on Exercise Performance: A Meta-Analytic Review
Effects of l-carnitine supplementation on weight loss and body composition: A systematic review and meta-analysis of 37 randomized controlled clinical trials with dose-response analysis