KATSUO
No. 001カツオ / KATSUO

KATSUO

Fuel · Train · Recover

Performance endurance compound

One pouch. Eight days. A wild-bonito peptide that holds your line through the back half of a long effort — without stimulants.

Buy a pouch — $17.99The science →
KATSUO pouch — navy with orange corner
カ ツ オ力
Dose
1/DAY
Supply
8 DAYS
Net wt
4.8 G
▸Built for the long swim
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持久のために

Three forces.
One protocol.

The skipjack — katsuo — never stops swimming. We pulled the active peptides from wild bonito and put them in your pre-session pouch.

01 / 3力
集中力
Focus

Lower heart rate at race pace. Same output, quieter signal.

02 / 3力
持久力
Endurance

Lactate clears at the rate you produce it. The back half stays close to the front half.

03 / 3力
回復力
Recovery

Stack quality sessions. Recover into tomorrow, not against it.

KATSUO box with skipjack illustration
How it works

One pouch.
Eight days.

  1. 01
    Pre-session
    1 capsule, 30 min before training.
  2. 02
    On the line
    Lactate clears as you produce it.
  3. 03
    Recover in
    Stack tomorrow's session at lower cost.
Built forThe long swim/Mile 20/The third climb/Ridge two/Run-out at 4 p.m./Block weeks
No. 001 · Endurance

One pouch.
$17.99.

Eight days of bonito peptide. Made in Japan. Free shipping over $60. Cancel any time.

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