Sodium (500 mg)

Sodium plays a key role in keeping your body hydrated and your muscles firing properly. It is the primary electrolyte lost through sweat and is essential for maintaining fluid balance, nerve signalling, and endurance during prolonged activity.

Onyx contains a clinically balanced dose of sodium to help you stay sharp, hydrated, and ready to go again tomorrow.

Potassium (180 mg)

Potassium supports proper muscle function and helps regulate heartbeat, fluid levels, and nerve signals. It works alongside sodium to keep your body in balance and prevent cramps and fatigue.

Our formula includes a precise amount of potassium to help you perform consistently — whether you're in the gym or on the go.

Calcium (50 mg)

Calcium isn't just for bones. It also plays a critical role in muscle contractions and nerve communication, especially during physical activity.

Onyx includes a functional dose of calcium to support every rep, swing, and stride.

Iodine (50 mcg)

Iodine supports healthy thyroid function, which plays a major role in maintaining energy levels and metabolic balance. It’s often overlooked, but essential for long-term performance and recovery.

We’ve included iodine in every sachet of Onyx to help you feel energised and ready, day after day.

Magnesium (20g)

Magnesium plays a vital role in energy production, muscle recovery, and reducing fatigue. It also supports electrolyte balance and helps regulate nerve function, making it essential for anyone active.

Onyx uses magnesium citrate for its high bioavailability, ensuring your body absorbs what it needs to stay focused, calm, and performing at its best.

Phosphorus (50 mg)

Phosphorus isn’t just for energy metabolism — it’s essential for cellular repair, muscle function, and efficient oxygen delivery during exercise.

When you're pushing your limits, phosphorus helps fuel performance at the core.

500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus

Hydration That Keeps You Going

Replenish lost electrolytes quick so you can push harder, recover fast, & feel stronger for longer.

Power Through Every Session

Fuel your performance with clean, effective hydration that helps fight fatigue before it hits.

Zero Sugar = Zero Crash

Stay energised and focused without the sugar spikes and crashes that slow you down.

Hydration Anywhere, Anytime

Slip a sachet in your bag or pocket and stay at your best, wherever the day takes you.

Refreshingly Natural Flavour

Enjoy a clean, crisp taste that makes hydration something you actually look forward to.

Clean Hydration & Real Results

Packed with pure ingredients that help you feel clear, strong and ready to move.

500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
500mg Sodium
180mg Potassium
50mg Calcium
20mg Magnesium
20mg Phosphorus
Take it first thing!

Start strong. Rehydrate and recharge to keep your body balanced and energy steady from the moment you wake.

Slumping mid day?

Skip the crash. A quick hydration boost can sharpen your focus and keep you powered through the day.

Ready to perform?

Fuel your movement. Electrolytes support performance and recovery so you can push harder and bounce back faster.

Too many beers...

Revive fast. Replenishing fluids and electrolytes helps ease symptoms and reset your body to baseline.

Not sure on Blood Orange?

Try out our other flavour.

Raspberry bursts with a crisp, fruity punch that’s as bold as it is refreshing. With zero sugar and a clean, fresh flavour, it’s designed to keep you hydrated without compromise.

@calmoores
@rickycaine
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@kieron_murph
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@calmoores
@rickycaine
@jordanleech
@kieron_murph
@chloeewer
@calmoores
@rickycaine
@jordanleech
@kieron_murph
@chloeewer
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At onyx, we empower active lifestyles with premium hydration + electrolyte solutions that support performance, recovery and everyday wellbeing.

WE FUEL THE DRIVE IF MODERN INDIVIDUALS TO MOVE, PLAY & THRIVE.