Swiss endurance science

Delay the burn.
Extend the run.

Get the Pre-Activity shot

OLEUS Pre-Activity helps you hold energy and power through long sessions and race day. Taken before you run, it helps you keep going for longer.

The science
4.87 · 675 reviews
“I used to fade after 30k. This block I finally ran the negative split I had been chasing, and the legs were there from km 1 to 42.”Sophie Laurent, Lyon, France “Taken about an hour before my long run, the pace that used to break me held to the end.”Luca Bianchi, Bologna, Italy “A friend told me to just try it once. I signed up for my first marathon terrified of the wall, and I ran it all the way out to the line.”Thomas Vermeer, Utrecht, Netherlands “First long race where the last 10k did not fall apart. I finished strong instead of surviving.”Nina Andersen, Aarhus, Denmark “No sugar, nothing sitting heavy. I take it before I run and my stomach finally agrees.”Anna Müller, Freiburg, Germany “The big weeks used to leave me wrecked. Now I hold my effort and keep showing up.”Emma Collins, Bristol, England
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Pre-Activity shot

Endurance boost in a 60ml shot.

A Swiss formula built for long efforts, hard sessions and race-day performance.

  • Hold your pace when fatigue kicks in
  • Give working muscles the support they need
  • Stay focused and energised for longer
€29,90
  • 30% off Pre-Activity this week.
  • Ships within 24 hours
  • 30-day money-back guarantee

The problem

Fuel gets you started. Energy production keeps you moving.

Long efforts demand more from your energy system. As fatigue builds, power drops, pace becomes harder to maintain, and every kilometre costs more.

  1. Fatigue sets in

    Your legs grow heavier, your effort rises, and the pace that felt comfortable becomes harder to hold.

  2. Power starts to fade

    As the session gets tougher, your output drops and your body begins slowing down before the finish.

  3. Fuel alone is not enough

    Gels provide carbohydrates, but your cells still need to turn that fuel into usable energy to keep you performing.

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Fuel gets you started. Energy production keeps you moving.
Fuel gets you started. Energy production keeps you moving.
Fuel gets you started. Energy production keeps you moving.

How it works

Prime, power, perform. Pre-Activity in one shot.

Prime

Big efforts demand more from your energy system. Oleuropein helps activate the mitochondria, so your body is better prepared to turn fuel into usable energy.

Power

When intensity rises, performance starts to drop. Caffeine from guarana helps you stay sharp, maintain output, and keep pushing for longer.

Perform

L-citrulline supports blood flow and oxygen delivery to working muscles, helping you sustain your effort when the session or race gets tough.

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Trusted by endurance runners across Europe.

Excellent 4.87 based on 675 reviews
Sophie Laurent

Pre-Activity Shot

I used to fade after 30k. This block I finally ran the negative split I had been chasing, and the legs were there from km 1 to 42.

Lyon, France

Thomas Vermeer

Pre-Activity Shot

A friend told me to just try it once. I signed up for my first marathon terrified of the wall, and I ran it all the way out to the line.

Utrecht, Netherlands

Emma Collins

Pre-Activity Shot

The big weeks used to leave me wrecked. Now I hold my effort and keep showing up.

Bristol, England

Anna Müller

Pre-Activity Shot

No sugar, nothing sitting heavy. I take it before I run and my stomach finally agrees.

Freiburg, Germany

Nina Andersen

Pre-Activity Shot

First long race where the last 10k did not fall apart. I finished strong instead of surviving.

Aarhus, Denmark

Inside the shot

Six actives. Built for endurance.

Oleuropein100mg

Primes mitochondrial function.

L-citrulline675mg

Supports blood flow and helps maintain ATP.

Acetyl-L-carnitine375mg

Helps delay fatigue.

Magnesium56mg

Supports electrolyte balance.

Vitamin C40mg

Supports energy metabolism.

B vitaminsB1, B2, B3, B5, B6

Support energy metabolism.

The subscription

More than a subscription.

Your Pre-Activity protocol arrives before you run out.

  • Save 15% on every delivery
  • Free shipping
  • Pause, skip, or cancel anytime
Get the Pre-Activity shot
More than a subscription.

Frequently asked questions

Take one shot about one hour before a long run, hard session, or race. Limit to one shot per day.

No. A gel gives you carbohydrates during the run. Pre-Activity is taken before you run and supports how your body turns fuel into usable energy, so it works alongside your gels rather than replacing them.

One 60ml shot with 100mg oleuropein, caffeine from guarana, L-citrulline, acetyl-L-carnitine, magnesium, and B and C vitamins. Neutral flavour with a hint of blueberry and a mild bitterness from the olive leaf extract. Best served chilled.

You take it about an hour before you start, not during, so it sits well ahead of the effort. It contains no ingredients designed to be taken mid-run.

Pre-Activity is built on oleuropein for mitochondrial support and has been studied in a placebo-controlled trial. Every batch is lab-tested.

Yes. You can pause, skip a delivery, or cancel anytime from your account. No minimum term, no questions asked.

We ship across Europe from our warehouse, with orders dispatched within 24 hours. Shipping is free.

Every batch is lab-tested and the base is a clean olive-leaf formula. The full ingredient list is on the product page.