Zum Inhalt springen
Warenkorb0

Warenkorb

Ihr Warenkorb ist leer

Informed Sport tested

Hot races · 4,000mg L-taurine a sachetNew

CoreCtrl

4.8 · 16 reviews

Hot 70.3 or Ironman booked? One sachet a day for eight days, the last on race morning.

Informed Sport certified · 60-day guarantee

Alistair BrownleeBen MillarMalachi CashmoreJoanna Tallmann

Developed with two-time Olympic champion Alistair Brownlee.

1 · # Beutel: 8

One hot race

£28.95

60-day guarantee, opened or not. See Delivery and returns

Made in the UKInformed Sport certified

4,000mg L-taurine · No caffeine · 1 kcal

4.8 16 reviews
“… The main reason for experimenting with CoreCtrl is for the Everesting World Championships on Mt Etna in September where temperatures will be mid to high-twenties.… Everesting World Championships on Mt Etna …”
Jez T. · review via Judge.me
“I used the CoreCtrl specifically to target an indoor cycling race which was taking place during a heatwave. … The sachets were easy to take …… indoor cycling race … during a heatwave …”
Hayley S. · review via Judge.me
“… Battle tested at 36 deg in the European Aquabike Championships and in days leading up to it.… Battle tested at 36 deg …”
Gareth S. · European Aquabike Championships · review via Judge.me
  • American Express
  • Apple Pay
  • Google Pay
  • Klarna
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Batch tested

Our philosophy

Own your physiology. We develop what it takes for you to do just that.

Same philosophy, every product: based on the latest science, test it in the real world, stripped of anything that isn’t needed to perform again tomorrow.

Used by elite athletes around the world.

How to use

One sachet a day for eight days, ending on race morning.

RaceSeven days before, the eighth sachet on race morning
Training blockOne a day through the block, a week off after 24 days
DailyOne sachet in 500ml of water, at the same time each day
Pair itElectrolytes during the session itself

For a plan built on your race, your sweat and the weather, build your plan on this page. For a personal recommendation, email support@truefuels.com.

What it is

An eight-day protocol of 4,000mg L-Taurine and four electrolytes per sachet, taken before the heat arrives.

Eight sachets, one a day. Use Electrolytes during the session itself.

  1. 4,000mg L-Taurine
  2. Built for heat
  3. Leeds Beckett University study underway
  4. Eight days
Delivery and returns

Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.

The 60-day guarantee covers opened products. If it isn’t right, email support@truefuels.com within 60 days of purchase for a full refund.

You can cancel an order within 14 days, then return unopened products in their original condition within a further 14 days. We refund in full within 14 days of receiving them. Return postage is yours unless the item is faulty.

Faulty or damaged? Email support@truefuels.com with your order number and a photo. Full details in our returns and refunds policy.

CoreCtrl · from £28.95

01 / The problem

CoreCtrl · 8 days
  1. Your race is hot.

    Most of the energy you burn leaves your body as heat. In a hot, humid race, getting rid of it starts competing with your legs.

  2. Your training wasn’t.

    A week in a warm hotel won’t change that.

  3. Start seven days out.

    One sachet a day for eight days, the last on race morning. It won’t cool you down; it’s part of your race-day protocol.

“… Using it for my heat training regime before a hot race. … Will continue to use it in training blocks and the 8-day lead up to my race.”
Dan F., review via Judge.me

02 / Why it works

Start before the heat does.

  • 01

    4,000mg L⁠-⁠Taurine

    Per serve, across the full eight days.

  • 02

    Built for heat

    For races and training blocks in hot conditions.

  • 03

    Study underway

    Leeds Beckett University study underway.

  • 04

    Eight days

    A simple daily routine, race morning included.

Why taurine

Heat research has studied it at doses around 4g a day, taken for days before exposure, not on the day.

4,000mg
L-Taurine a day
8
Days, the last on race morning
0mg
Caffeine

Informed by Peel et al. (2024)

03 / The protocol

Two ways to use it.

One a day for eight days, the last on race morning.

£3.62 a day for eight days.

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5
  6. 6
  7. 7
  8. 8Race morning

Under 60kg: 2 days on, 1 day off, eight sachets over 11 days.

  1. 1
  2. 2
  3. 3Off
  4. 4
  5. 5
  6. 6Off
  7. 7
  8. 8
  9. 9Off
  10. 10
  11. 11Race morning

Both: one sachet in 500ml of cold water, same time each day; on training days, 30 to 60 minutes before.

04 / Proof

What athletes told us.

4.8

16 reviews

100%
rated CoreCtrl 4 or 5 stars

16 of 16 reviews rate it 4 or 5 stars · Informed Sport tested batch by batch · Made in the UK

Reviews · CoreCtrl

4.8 ★ · 16 reviews

    05 / The system

    The race-day system.

    Eight days to race morning: CoreCtrl. On the day: Electrolytes in the bottle, High Salt gels in the pocket. Three products, one job each.

    Alistair Brownlee
    Alistair Brownlee
    Alistair Brownlee

    Alistair’s perspective

    “If heat is a major factor, prepare properly.”
    1. CoreCtrl

    Alistair Brownlee · Two-time Olympic triathlon champion · Co-founder

    Multipacks

    Stock up for race season.

    • 8sachets One protocol per hot race or heat block
    • 16sachets 16 sachets, two protocols
    • 32sachets 32 sachets, four protocols, a full race season

    The Fourth Discipline™

    The system is ours. The destination is yours.

    06 / Formula

    What's inside. Nothing it doesn't need.

    L-Taurine plus four electrolytes and black pepper extract. Six ingredients, nothing for show.

    Read the full science

    This formula doesn’t stop evolving once it ships. We keep testing and refining it with sports scientists and our own athletes.

    See our process

    The core of the protocol

    As potassium citrate

    As calcium citrate

    From Himalayan rock salt

    As magnesium citrate

    Piper nigrum

    Per sachet: 1 kcal, 0.3g carbohydrate.

    07 / How to use

    Choose your race. Get your protocol.

    For your own numbers, build your plan below.

    Your kit

    • CoreCtrl
    • Energy Gels
    • Electrolytes

    Race protocol · Half Ironman

    Hot race
    1 CoreCtrl sachet a day from 7 days before, the eighth on race morning
    30 min before
    1 Electrolytes in 500ml water
    Pre-start
    1 Energy Gel
    Energy Gels
    bike 2 to 3 an hour = 80 to 120g carbs. Run 2 an hour = 80g carbs. Low Salt for normal sweat; salt marks or extreme heat: High Salt
    Hydration
    400 to 800ml an hour. Heat or heavy sweat: 1 Electrolytes
    Straight after
    1 Electrolytes in 500ml water

    08 / Your plan

    Get your personalised fuelling plan.

    Your Details
    Weight kg
    Bottle size ml
    GI Tolerance
    Sweat Saltiness
    Training Volume
    Hours per week h/week
    Select Your Race
    Sweat Rate L/h
    Sweat Sodium mmol/L

    If you have tested your sweat rate or sodium concentration, entering these will sharpen the fluid and electrolyte recommendations. Leave blank to use the algorithm's estimates.

    Algorithm informed by published research on exercise fluid replacement, sweat rate, sweat sodium concentration and carbohydrate use during endurance exercise, including Sawka et al. (2007), Jeukendrup (2011) and Baker (2017). Constants: 40 g carbohydrate per gel, 1 g salt per high-salt gel, 0.25 g salt per low-salt gel and 1 g salt per electrolyte serving. Scientific estimate only. Individual variation exists. Validate all recommendations in training before race day.

    09 / Athletes

    Trusted from the podium to the parkrun.

    Tap a face to read their story.

    • Ben Millar Ben Millar

      “I fuel for the work I put in, to maximise adaptations and recover well so I’m ready to go again, day after day.”

      Ben Millar · Reflex-Nopinz

    • Malachi Cashmore Malachi Cashmore

      “Before I started fuelling my key sessions properly, I thought dead legs and collapsing on the floor after long rides was normal.”

      Malachi Cashmore · Professional triathlete

    • Joanna Tallmann Joanna Tallmann

      “My running has improved noticeably. That is due to consistent training and growing experience, but above all to slowly getting the hang of fuelling.”

      Joanna Tallmann · Ultrarunner

    • Alistair Brownlee Alistair Brownlee

      “Simple things done consistently are usually what make the difference.”

      Alistair Brownlee · Co-founder

    10 / Questions

    Questions? Answered.

    Visit the help centre
    Which protocol do I use?

    Racing: eight days to race morning. Training: daily through the block, a week off after 24 days.

    Is there a lighter dose?

    Under 60kg: 2 days on, 1 day off, until all eight sachets are taken, the last on race morning. That is 11 days in total.

    What does it taste like?

    Mild peppermint. A few people find it unusual at first.

    Does it cool me down?

    No product cools you on its own, and we won’t pretend otherwise. CoreCtrl is preparation: the dose used in heat research, taken before the heat arrives.

    Isn’t taurine in energy drinks?

    Same amino acid. No caffeine, no sugar, and a dose and timing taken from research rather than a can.

    £28.95 for one race?

    £3.62 a day for the eight days before the hottest race of your year.

    Do I still need electrolytes?

    Yes. CoreCtrl doesn’t replace hydration; on the day use Electrolytes and your gels as normal.

    Racing somewhere warm this winter?

    Start seven days before you fly, not when you land.

    Indoor race or turbo in a heatwave?

    Use it the same way: one a day for eight days, the last on race morning.

    Multi-day event?

    From seven days before, then one each morning of the event.

    Will it arrive before race week?

    Delivery to the UK: 1 to 3 working days, free over £40, otherwise the fee shows at checkout.

    The first sachet is seven days before the race; order before then.

    Is it tested for banned substances?

    Yes. Every batch is Informed Sport certified before it ships.

    Is there scientific research behind it?

    Yes. The formula is informed by research on taurine supplementation in hot conditions, including the work of Peel et al. (2024).

    Who is CoreCtrl for?

    Every athlete who trains or competes in hot or humid conditions, including marathon running, triathlon, HYROX and cycling.

    “… Racing Ironman Da Nang in 35-degree heat with a Kona slot on the line, nutrition couldn’t be an afterthought. …”
    Alan C., Ironman Da Nang, Race Ready System, review via Judge.me

    truefuels® · The Fourth Discipline™

    Your race is hot. Start seven days out.

    Pick the race or the block, count back seven days, start there.

    Shop CoreCtrl