Third-party tested / Free U.S. shipping over $50 / Cancel anytime

Performance Stack

We graded the science.
Then built the stack.

Every claim scored by strength of evidence. Creatine alone scores 9/10 on efficacy and safety. The Performance Stack is three proven products working as one protocol.

Creatine— strength & power

Pre-Workout— drive & focus

BCAA— recovery support

9/10 efficacy 9/10 safety Most-researched

4.8 average · 1,000+ verified reviews

Stack photo

Performance Stack

Creatine · Pre-Workout · BCAA

$102.00/mo$120.00

Subscribe & Save — 15% off every product, billed monthly. Cancel anytime, no lock-in.One-time purchase, plain sum of all three. Or subscribe to save 15% on each.

Third-party tested · evidence-scored · cancel anytime

The problem

Three half-used tubs
aren't a system.

Effort was never the issue. The work just outpaces the fuel — and your last set pays for it.

Power fades

strength drops off late

Focus drifts

drive runs out mid-session

Recovery lags

tomorrow starts behind

One protocol. Three jobs. Nothing wasted.

Creatine for power, pre-workout for drive, BCAA for recovery — each chosen for one job, each claim graded by evidence. No proprietary blends.

What you get

Power. Drive. Recovery.
In that order.

Creatine

Lift heavier, longer

Explosive output where it counts — the kind of strength that actually sticks.

Pre-Workout

Show up sharp

Focus and endurance that hold through the last set, not just the warm-up.

BCAA

Train again tomorrow

Recovery support between sessions, so tomorrow isn't a step back.

How it works

Built around your session.

Step 1 · 20–30 min before

Before you train

One scoop of Pre-Workout. Energy, drive and focus, dialed in before you step in.

Step 2 · every day

While you train

A daily scoop of Creatine fuels explosive power — set after set, session after session.

Step 3 · after

Recover and repeat

BCAA supports recovery between sessions, so the next one starts fresh.

What's included

Everything in the stack.

Creatine Powder

$20.00

16 oz · 30 servings · 3–5 g daily

Pure creatine monohydrate, unflavored

Supports strength & power, and recovery between sessions

Pre-Workout Mix Powder

$52.00

30 servings · 1 scoop (~10 g) 20–30 min before

Caffeine, creatine malate, beta-alanine, L-arginine AAKG

Supports drive, endurance, power & pump

Contains stimulants (caffeine).

BCAA Powder

$48.00

16 oz · 30 servings · 6.5 g BCAAs (2:1:1)

Leucine, isoleucine, valine + L-glutamine & B6

Supports muscle repair & recovery between sessions

Performance Stack

$102.00/mo$120.00

Subscribe & Save — 15% off every product, billed monthly. Cancel anytime, no lock-in.One-time purchase, plain sum of all three. Or subscribe to save 15% on each.

What's inside

Backed by the research.

No proprietary blends. Every ingredient is shown at full dose, with its mechanism and the strength of the published evidence behind it.

Ingredient

How it works

Evidence

Creatine monohydrate ¹

5 g daily

Raises phosphocreatine stores to regenerate ATP for short, explosive efforts — the basis for gains in strength and power.

Strong

Caffeine ²

pre-workout · stimulant

Blocks adenosine receptors to lower perceived effort and sharpen alertness, focus and training output.

Strong

Beta-alanine ³

pre-workout

Raises muscle carnosine to buffer acidity, supporting endurance through sustained, high-intensity sets.

Strong

L-arginine AAKG ⁴

pre-workout

A nitric-oxide precursor studied for blood flow and the training “pump.” Human evidence is mixed.

Emerging

BCAA ⁵

leucine · isoleucine · valine

Provide substrate for muscle-protein signalling and may ease perceived soreness between sessions.

Supportive

References

1Creatine — ISSN position stand, 2017 2Caffeine — ISSN position stand, 2021 3Beta-alanine — ISSN position stand, 2015 4L-arginine and exercise — review, 2011 5BCAA and muscle protein synthesis, 2017

The fine print

Vegan · third-party tested every batch. Evidence grades reflect the published literature on each ingredient, not this specific product. Pre-Workout contains stimulants (caffeine).

Confirm current sourcing, dosages and citations before publishing. These statements have not been evaluated by the FDA.

Trusted by 12,000+ members

The people who train on purpose.

4.8

1,000+ verified reviews

"Recovery between sessions feels quicker and my legs are fresher the next day."

Daniel K., 31

8 weeks in

"No flavor games, no mystery blend. I can read every gram — and my numbers keep climbing."

Marcus T., 38

12 weeks in

"One protocol instead of a cluttered shelf. I actually take it now — every day."

Priya R., 34

6 weeks in

Individual experiences shared by Agen members. Results vary from person to person and are not guaranteed.

Why Agen

Less to hide. More to prove.

Agen Performance

Typical brands

Proprietary blends

All doses listed

Often hidden

Claims graded by evidence

Each one scored

Rarely

Third-party tested

Every batch

Sometimes

Commitment

Cancel anytime

Lock-in common

Vegan formula

Yes

Varies

Questions, answered

Before you start.

How long before I see results?

Creatine typically builds to steady gains in strength and power over about 8–12 weeks of consistent training. Pre-workout effects — drive, focus, endurance — are felt in the same session.

Is it safe?

Creatine monohydrate scores 9/10 on safety and is among the most-studied supplements available. Every batch is third-party tested. The Pre-Workout contains stimulants — check the label and your tolerance if you're sensitive to caffeine.

Can I cancel my subscription?

Yes. Subscribe & Save is −15% with no contract — pause, skip, or cancel anytime from your account.

Shipping and returns?

Free U.S. shipping on orders over $50. Add your returns policy here — most performance brands offer a satisfaction window on unopened or first-time orders.