Katsuo勝魚
Katsuo Stamina pouch — eight capsules
No. 001Stamina
No. 001 · Endurance

Katsuo Stamina

An eight-capsule endurance protocol built on wild-bonito peptide. Studied to accelerate blood-lactate clearance and lower heart rate at pace — for the back half of a long effort.

Quantity
1
  • Free shipping over $60
  • Third-party tested
  • Cancel any time
Capsules
8 per pouch · 4 servings
Protocol
2 capsules, 30 min pre-session
Concentration
≈ 1.5 kg wild bonito per serving
Stimulants
None
Flavor
Unflavored capsule (formerly grapefruit)
Origin
Formulated and made in Japan
Formulation

What is in
the pouch.

A single active, intentionally. Bonito peptide is the fragment-fraction of skipjack protein with the strongest evidence for lactate-clearance support.

  • Bonito peptide (wild skipjack)≈ 1.5 kg equivalent

    Active fraction. Studied to lower blood lactate at every measured intensity.

  • Capsulevegetable (HPMC)

    Plant-based shell. No gelatin, no titanium dioxide.

  • Excipientsminimal

    Rice hull concentrate as a flow agent. Nothing else.

Per serving (2 capsules). Sourced from sustainably caught wild skipjack. Not intended to diagnose, treat, or prevent any condition. Consult a clinician before starting any supplement regimen.

−23%
blood lactate at 240 m/min
vs. placebo · 5 pro coaches · RunplusTrail Issue 29 (2018)
−33 bpm
heart rate at LT pace
Yokohama Sports Medical Center · single-subject follow-up
15×
energy density of lactate vs. glycogen
Prof. Hideo Hatta, U-Tokyo Graduate School · exercise physiology