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A lone swimmer swimming freestyle in a misty lane pool at dawn, small in the frame on the right

THE 24H SYSTEM

The world’s most complete 24-hour testosterone support system.

14 ingredients. Two formulas. One daily routine.

Shop the 24H System →

64% OFFvs buying both separately— 64% saving: the 24H System on subscription versus PRIME and RECOVERY purchased separately one time.

See how it works →
4.5 / 517 reviews
  • Men's Health
  • GQ
  • Runner's World
  • Outside
  • Fast Company

WHY 24 HOURS

Most testosterone stacks stop at the morning. DEXO doesn’t.

Testosterone rises overnight and is typically highest around waking. PRIME supports the day. RECOVERY supports the night.

AMDayEveningPMSleepNext AM

AM · MORNING

Support healthy testosterone.

TAKE PRIME / AM

2 CAPSULES

Healthy testosterone · Vitality · Focus

You’re not just getting older. Your testosterone is under pressure.

Less energy. Slower recovery. Less drive. More brain fog. Most men blame age. But testosterone, sleep, stress and recovery are connected — and when one slips, you can feel it across the rest.

Most T stacks stop at testosterone.

DEXO pairs targeted testosterone support with dedicated ingredients for sleep, stress, recovery and performance.

The formulas

Studied ingredients.
Serious doses.

14 ingredients. Every amount disclosed. Doses informed by human research.

Sunrise light breaking over still water and low mist

PRIME / AM

Testosterone Support + Daytime Performance

6 ingredients.

Try PRIME now →
Shop the 24H System →

64% OFFvs buying both separately— 64% saving: the 24H System on subscription versus PRIME and RECOVERY purchased separately one time.

Ingredient deep dive →

What to expect

Consistency compounds.

Weeks 1–2

The nights change first.

The night is the first place the routine starts doing its work. Sleep begins settling. Stress starts coming down. Recovery starts building.

  • Sleep ↑
  • Stress ↓
  • Recovery ↑
1–23–56–910–13+
  • Testosterone ↑
  • Stress ↓
  • Sleep ↑
  • Recovery ↑
  • Performance ↑

Illustrative progression, not measured DEXO outcomes. Individual responses vary.

What consistency sounds like

4.5 / 5
Read all reviews →

  • Two moments beats a cabinet full of bottles

    I was taking six things and remembering maybe three. PRIME with breakfast, RECOVERY after dinner, done. The label being fully disclosed is what made me try it.

    Chris L.· Verified buyer· 24H System· 10 weeks in

  • No jitters, which was the point

    I wanted morning support without another stimulant on top of coffee. PRIME is caffeine-free and that is exactly what I needed.

    Tom R.· Verified buyer· PRIME / AM· 8 weeks in

  • Good, wish the scoop was smaller

    RECOVERY mixes fine but the scoop is generous for a small glass. Evenings feel calmer overall and I am sleeping through more often than not.

    Ade O.· Verified buyer· RECOVERY / PM· 5 weeks in

  • The research pages sold me

    Every ingredient linked to the studies behind it, so I knew what I was buying. Six weeks in, my evenings wind down faster and mornings feel steadier.

    Daniel M.· Verified buyer· 24H System· 6 weeks in

  • Doses I could actually check

    I compared the amounts against the studies before ordering and everything lined up. A month in, the two-step routine is effortless.

    Priyan S.· Verified buyer· PRIME / AM· 4 weeks in

  • Calmer wind-down

    Two kids under five. RECOVERY has become the signal that the day is over, and my sleep is far more consistent because of it.

    Jonah B.· Verified buyer· RECOVERY / PM· 7 weeks in

  • Three months in

    By week eight the evening routine had genuinely stuck. Sleep is more consistent, and the mornings that follow are noticeably easier.

    Marc V.· Verified buyer· 24H System· 12 weeks in

  • Solid morning habit

    Capsules are easy to fold into breakfast, so the habit stuck immediately. Afternoons feel less flat than they used to.

    Ben H.· Verified buyer· PRIME / AM· 6 weeks in

  • Falling asleep faster

    No melatonin grogginess in the morning, which was my worry going in. The magnesium and glycine combo has become part of how I wind down after late training sessions.

    Rafael G.· Verified buyer· RECOVERY / PM· 8 weeks in

  • Travels well

    Capsules in a pouch, powder in a shaker. Four trips this quarter and I did not miss a day.

    Steve K.· Verified buyer· 24H System· 14 weeks in

A single rower crossing still water at dawnA lone cyclist riding a coastal road into low evening fog

Who this is for

For men who aren’t done yet.

You still want to get stronger. Move faster. Build something meaningful. Be present when you get home. See more of the world. Stay curious. Keep improving.

The common thread isn’t age. It’s intent.

You still expect something from yourself, and you want the energy, recovery and capacity to keep answering that expectation.

More to give. More to go after. More life ahead.

The guarantee

Give it the full 90 days.

Build the routine. Give it time. If DEXO isn't right for you within 90 days, we'll refund your purchase.

90-day money-back guarantee · Skip, pause or cancel any time

  • PRIME / AM capsules for the morning and RECOVERY / PM powder for the evening — a 30-day supply of each, shipped together. Fourteen ingredients in total, every amount printed on the label.

All questions →

The 24H System

The day. The night.
Again tomorrow.

PRIME / AM + RECOVERY / PM. Natural support for healthy testosterone, energy, sleep and recovery.

Shop the 24H System →

64% OFFvs buying both separately— 64% saving: the 24H System on subscription versus PRIME and RECOVERY purchased separately one time.

The 24H System: PRIME / AM and RECOVERY / PM jars side by side