Underdog Energy includes a full 4g of L-Citrulline — a clinically proven, high-performance dose you usually only find in premium pre-workouts — to boost nitric oxide, blood flow, endurance, and recovery in ways typical energy drinks can’t. While most brands rely solely on caffeine, Underdog is engineered for real athletic output, giving athletes smoother energy, better circulation, and longer-lasting performance.

Underdog Energy stands out in a crowded energy drink market by actually proving its “clean performance” claims through Informed Sport Certification — the world’s gold standard for banned-substance testing. While most brands rely on vague promises and zero third-party oversight, every batch of Underdog is fully audited, verified, and tested against 250+ WADA-banned substances, ensuring complete safety and transparency.

This certification requires ingredient tracing, manufacturing audits, and batch-by-batch testing — a level of rigor most competitors avoid. Whether you’re a pro athlete or an everyday grinder, Underdog delivers clean, trustworthy energy backed by science, not marketing hype.

Unlike single-hit caffeine drinks, Underdog uses Green Tea Extract + Infinergy® to deliver rapid uptake followed by extended plasma caffeine levels, supporting stable alertness, reduced fatigue perception, and improved cognitive performance.

Underdog Energy goes beyond caffeine with a science-backed nootropic stack — Lion’s Mane (8:1 extract) and Alpha-GPC — to fuel both mental clarity and physical performance. It’s the next evolution of energy drinks: clean, crash-free, and designed to power your body and brain. 

Naturally sweetened energy drinks are redefining clean performance. Underdog Energy uses stevia, monk fruit & erythritol — not artificial chemicals, like sucralose.