Made for demanding days

Charge your cells

World's purest creatine for maximising your energy reserves, delaying fatigue, and sharpening your cognition when it's needed most. Body and mind support for those fighting the good fight.

5g Creapure® · per serving
5% Funds mental health
Ireland Made in Ireland
Mental Stack 30-day pouch on a bone backdrop
For the people having them.

A useful product, simply made.

No hype. No proprietary blends. Just one thing, done well, and a portion that goes back.

01

Creapure® inside.

The highest quality creatine monohydrate made to ≥99.9% purity. We list the source because it matters who makes it.

Lab Tested
02

Five capsules. One ritual.

Five vegan capsules deliver a clean 5g serving. No scoops, no taste, no scoop-fishing in a tub at 6 in the morning.

Format · Vegan capsule
03

Five per cent, every pack.

5% of every pouch goes towards Ireland's mental health crisis where 42.5% of Irish adults experiencing at least one mental health disorder.

The 5% pledge
The pack

Two sizes. Same standard.

Try it for two weeks, or settle in for the month. Both pouches are matte recyclable, printed once, and finished in Ireland.

  • 14 days · 70 caps
  • 30 days · 150 caps
  • Recyclable matte pouch, no foil, no extras
  • Free EU shipping over €40
Pre-order now
14-day and 30-day Mental Stack pouches side by side
Mental Stack pouch on a calm morning desk

For demanding days. And the people having them.

Read the story

The pledge ,

Five per cent of every pack funds mental health support.

You are in power to choose. We'll keep listing where the money goes, openly.

How the 5% works

Designed to be lived with.

Pre-order now
A note from us

Why we made this one thing.

Founder note · 2 min read

Laurynas, founder of Mental Stack

Mental Stack grew out of something personal. My mother lived with mental illness. My dad, my brother and I lived through her psychotic episodes alongside her. Exercise and eating properly were how I stayed grounded through it. Creatine was part of that.

Creatine is well-studied, easy to take, one of the rare supplements where the science has actually settled, and increasingly understood as something the brain wants too, not only the muscle. Just like muscle cells, brain cells store creatine. When neurons fire rapidly and burn through ATP (cell's energy molecule), creatine steps in to recharge it.

When you supplement with creatine, you increase creatine stores in the brain, not just the muscles. More reserve energy available, faster recharging when demand spikes. This shows up practically during periods of mental fatigue, sleep deprivation and high stress.

I have been supplementing my diet with creatine for years. It's a supplement that works for reaching fitness goals and staying sharp during demanding days. I want help those who are fighting the good fight and are experiencing mental stress, fatigue and a lack of energy. I want to share the purest creatine in its most convenient form to support your demanding life.

Laurynas

Slow newsletter

A quiet note, monthly.

No marketing tricks. A short note about what we're making, where the 5% went last month, and one thing worth reading.