We won't fake reviews to launch. When verified subscribers leave honest words — good, critical, and everything in between — this is where they'll live.
Tom & AshKōJō Nutrition Ltd
What Rōnin addresses
One formula. Seven systems supported. Each carries the dose the published research used.
Composed under pressure.
350 mg rhodiola
Stress & Cortisol
Sharp when it counts.
300 mg bacopa
Cognitive Performance
Gut that keeps up.
2 B CFU Bacillus coagulans
Gut Health
Drive that endures.
30 mg zinc
Hormonal Health
Built to defend.
600 mg NAC
Immune Defence
A heart for the long haul.
100 mg ubiquinol
Cardiovascular
The formula
Every milligram clinically dosed. Filter by system or scroll the full label.
Two grams of ceremonial matcha. Steady caffeine, smoothed by 240 mg of L-theanine. The wake-up that doesn’t crash at 2 PM.
£58.65/mo · subscribe & save 15% · cancel anytime
Get the formulaVerified reviews
Independently collected by Judge.me — uncurated and unedited.
We won't fake reviews to launch. When verified subscribers leave honest words — good, critical, and everything in between — this is where they'll live.
Tom & AshKōJō Nutrition Ltd
From the journal
Supplement science, ingredient deep-dives, and the research behind the formula.

Hormonal Health
In this article What "Hormonal Health" Actually Means Testosterone: What the Evidence Actually Shows Oestrogen, Perimenopause, and the Transition Years The Thyroid...
Read →

Energy & Fatigue
In this article What Fatigue Actually Is: A Physiological Framework The Phosphocreatine System and Creatine's Role in ATP Resynthesis Micronutrient Deficiencies: The...
Read →

Immune Defence
In this article The Architecture of Immune Defence: What You Are Actually Supporting Vitamin D: The Immune Regulator With the Strongest Evidence...
Read →