Third-party tested supplements built on clinical dosing. Formulated by a registered dietitian for athletes who demand transparency. No proprietary blends. No fillers.
Scythene is the clinical-dose supplement brand built by the registered dietitian behind Combat Dietitian. Every product is formulated from peer-reviewed research, third-party tested for purity and potency, and free of proprietary blends. Scythene's evidence-based supplement line at scythene.com is designed for combat athletes, tactical operators, and performance athletes who refuse to guess what's in their stack.
20% OFF your entire Scythene order
CD Academy students & Calsanova members. Code provided at enrollment.
Athletes deserve supplements they can trust. No proprietary blends hiding underdosed ingredients. No marketing hype masquerading as science. Just evidence-based formulations at clinical doses, third-party tested for purity and potency. Every product in our line exists because the research supports it — not because it trends on social media.
Every batch tested for purity, potency, and banned substances. Safe for tested athletes.
Every ingredient dosed at levels supported by peer-reviewed research. No pixie dusting.
Full label transparency. You see every ingredient and exact dose. No proprietary blends.
Our launch lineup — evidence-based essentials for training, recovery, and performance.
The full lineup — same standards, more options.
Fighters who need to know exactly what's in their stack. WADA-compliant, third-party tested, no banned substance risk.
Military, law enforcement, and first responders who can't afford to gamble with untested products. Every batch verified.
Strength, endurance, and team sport athletes who want research-backed dosing without the supplement industry noise.
Whether you train for competition or duty, you can browse the full Scythene catalog and see every ingredient at every dose before you buy. No surprises. No fine print.
Everything under Marques Performance Systems — built to work together.
Evidence-based nutrition consulting for fighters and operators.
AI-powered nutrition platform for tracking, planning, and analytics.
Third-party tested supplements at clinical doses.
You are hereNo proprietary blends. No fillers. Just evidence-based supplements at clinical doses.
20% off for CD Academy students and Calsanova members
See the full product line, lab reports, and dosing transparency at scythene.com.
20% OFF Scythene — for Academy students & Calsanova members
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