HomeShopScienceContact
Produced in the United Kingdom

Engineered,
Performance.

A clinical electrolyte protocol engineered to support fluid balance with what your body actually needs for sustained performance and recovery.

  • Evidence-led, ingredient-focused
  • Engineered for endurance and recovery
  • Pure by design, driven by science
Try Performance Electrolytes

Ingredients

PRESCISION FORMULATION
600mgCitrate

Sodium

Sodium
  • Maintains fluid balanceKeeps cells hydrated and blood volume stable during exercise.
  • Enables nerve signal transmissionSupports electrical impulses between muscles and the brain.
  • Regulates blood pressureHelps maintain circulation under cardiovascular load.
20MGBuffer

Citric Acid

Citric Acid
  • pH balance & tasteProvides a clean, refreshing citrus edge without added sugar.
  • Mineral chelationHelps stabilise electrolytes for consistent absorption.
  • Krebs cycle supportFeeds directly into cellular energy production.
50mgMalate

Magnesium

Magnesium
  • Aids energy metabolismCofactor in ATP production and oxygen utilisation.
  • Reduces crampingHelps regulate muscle relaxation during long sessions.
  • Supports post-session recoveryContributes to sleep quality and tissue repair.
200mgChloride

Potassium

Potassium
  • Supports neurological functionMaintains signalling between nerves and muscles.
  • Sustains muscle contractionsPrevents weakness and supports rhythm under fatigue.
  • Balances blood pressureCounterbalances sodium to keep vessels relaxed.
2.35gCo-transport

Glucose

Glucose
  • Enhances electrolyte uptakePrecision-dosed glucose drives faster absorption without excess sugar.
  • Optimises hydration efficiencyGlucose enables SGLT1 co-transport to pull sodium and water into the bloodstream.
  • 2:1 glucose-to-sodium ratioThe exact stoichiometric dose required to activate SGLT1 co-transporters in the gut.
80mgAscorbic

Vitamin C

Vitamin C
  • Antioxidant defenceNeutralises free radicals generated during exercise.
  • Immune resilienceSupports immune function after intense training blocks.
  • Supports electrolyte absorptionVitamin C acts as a co-nutrient that can assist the intestine in absorbing essential electrolytes.
500mgOsmolyte

Taurine

Taurine
  • Cellular osmolyteRegulates cell volume and hydration by balancing intracellular fluid.
  • Endurance stress bufferHelps reduce oxidative stress during prolonged output.
  • Cardiovascular & cognitive supportSupports heart rhythm and mental clarity under load.
SYSTM Performance Electrolytes sachets

Get started with
SYSTM Performance Electrolytes

Flexible
buy once or subscribe
Boost
performance & recovery
Performance
driven by science
Cancel anytime Free UK shipping Performance Science

In the field

@systm.performance
Reel · 00:15
Trail runner at sunrise, silver sachet in hand, cinematic
Reel · 00:16
Cyclist mid-climb pouring SYSTM into bottle, motion blur
Reel · 00:17
Swimmer poolside tearing open a foil sachet, minimal
Reel · 00:18
Studio flat lay of SYSTM box, sachets and metal tin
Reel · 00:19
Marathon athlete drinking from clear bottle, natural light
The science

Formulated for performance,
not trends.

Every gram is dosed to a physiological rationale. Nothing is in SYSTM because it looked good on a label.

Athlete with SYSTM sachet

Performance Electrolytes are a training hydration formula designed to replace key minerals lost through sweat and support fluid balance during exercise. Each serving contains sodium, potassium, magnesium, calcium, taurine, vitamin C and a precise micro-dose of glucose.

Sodium is the primary electrolyte lost in sweat and plays a central role in fluid balance, nerve function and muscle contraction. We use 600 mg per serving which sits at the physiological sweet spot - enough to maintain plasma volume whilst minimising gastric upset.

We use citrate and malate mineral forms - up to 3x more bioavailable than chloride blends used in many sports drinks, and dramatically easier on the gut.

Biology doesn't care about diet trends.

Most hydration brands chase the zero-sugar label. SYSTM uses a precise 2.5 g micro-dose of glucose because sodium-glucose co-transport is one of the body's key mechanisms for absorbing sodium and water in the gut.

Not sugar for calories. Glucose for transport.

Mix one sachet with 500 ml of cold water. This gives the intended electrolyte concentration, flavour profile and sodium-to-glucose ratio. Shake well and drink before, during or after training.

£32.00