Evidence-based ratios. No sugar. Just clean hydration that works.
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Sodium plays a pivotal role in hydration. It increases fluid absorption, fluid retention, maintains electrolyte balance and stimulates thirst, thus increasing fluid intake. Research shows that drinks containing sodium can improve endurance, mood, and reaction times, whilst reducing the risk of cramps and hyponatremia.
Learn moreMagnesium is imperative for over 300 enzymatic reactions, including those that produce and use ATP, the body's energy currency. It aids hydration by moving water into cells, essential for muscle function, energy, and performance.
Learn morePotassium works closely with sodium to maintain normal cellular fluid balance, nerve impulses, and muscle contractions. Potassium chloride specifically may counteract the effects of too much sodium, maintaining a healthy electrolyte balance.
Learn more
When To Use Core Hydration Sachets
Core Hydration Sachets can be used any time of the day.
We are generally more dehydrated upon waking, so you may find some benefit to consuming Core Hydration first thing in the morning.
We also suggest that you use these sachets 30 minutes before, during, or immediately after high intensity training to replace the fluids and electrolytes lost in sweat.
For maximum efficacy, we recommend that you mix one sachet with 500ml-1L/16-32OZ of water.
Core Hydration Sachets contain three key electrolytes in bioavailable forms: Sodium (as salt/sodium chloride), Potassium (as potassium chloride), and Magnesium (as marine magnesium citrate), scientifically formulated to optimise hydration, and improve mental and physical performance.
You can fully rehydrate within 30 minutes with sufficient fluid and electrolytes.
Check out our article on hydration strategies to find out more.
Exercising at moderate to high intensities can result in significant electrolyte losses and electrolyte imbalances, which can negatively impact mental and physical performance. Water alone is not able to replace those electrolytes. Core Hydration electrolyte sachets are specifically designed to rapidly restore electrolyte balance and optimise cellular hydration.
We recommend that you add 1 sachet to 500ml-1L of water.
Core Hydration Sachets are vegan, making them suitable for those on a plant-based diet.
Core Hydration Sachets contain 0g of carbohydrates, making them suitable for those on a ketogenic diet.
Individual electrolyte requirements vary significantly. They are dependent upon factors such as sweat rate, sweat electrolyte composition, activity levels, training intensity, environmental conditions and more.
It is important to note that Core Hydration is meant to supplement your electrolyte intake; it should not be your sole source of electrolytes.
A well balanced daily diet is likely to provide a significant amount of your electrolyte requirements and we highly recommend a food-first approach. However, you can supplement with 1-4 sachets per day, depending on your activity level. For any specific guidance on daily salt and electrolytes intake, you should consult your doctor.
Additionally, if you are pregnant or nursing, taking any prescription medications or have any pre-existing medical conditions, please consult a medical professional before consumption and use only as directed.
Overall rating: 4.9292035 / 5 from 113 reviews.
Core Hydration Sachets - Melonberry offer a science-backed electrolyte blend of sodium, potassium, and magnesium to optimize hydration and maintain electrolyte balance. Customers praise the excellent taste and quality of these electrolytes.
Review topics: ["quality","results","benefits","issues","energy","hydration","taste","service","difference","work","sachets","electrolytes","training","recovery","fan","cadence"].
"I ran the London 100km ultra marathon used your core electrolyte sachets for the first time during a race. It got super hot during the day at 21+ degrees and the sachets completely saved me. No cramping or muscle spasms whatsoever and I never got tired of the melon berry flavour. Amazing product!"
"Nothing to be said here. . taste is good, exactly what I was looking for, they added a lime one in the box which I prefer so will be changing over next month"
"I’ve been using Cadence hydration sachets for the past 3 months now and honestly, they’ve become part of my daily routine. I train regularly and also have a pretty full-on schedule, so staying properly hydrated is something I’ve always struggled with—but these have made a noticeable difference. Energy levels feel more consistent, I recover better after workouts, and I don’t get that mid-afternoon slump anywhere near as much. They taste great (which is a big win compared to some others I’ve tried), mix easily, and are really convenient to keep in my bag when I’m on the go. What I like most is that it doesn’t feel like a gimmick—you can genuinely feel the benefit after using them consistently. Would definitely recommend to anyone training hard, travelling a lot, or just looking to stay properly hydrated day-to-day."
"Really rate this,taste lovely doesn’t effect my reflux and has really helped with my performance and hydration"
"The best!! Flavour is massively better than other brands & notice such a difference with how I feel after using! Couldn’t go without"
"I’ve added this to my morning routine, and the first thing I do is drink it. It’s a great flavour, and I can feel the benefits of drinking it!"
"Great"
"Great product and works"
"Great product - had some issues with delivery as they have been using Evri (worst delivery company in the UK) but to be fair to Cadence the customer service has been excellent and they resolved all issues very quickly. Would definitely recommend - excellent electrolytes"
"Melonberry is elite, noticed my sleep score on garmin improved after using these! Would recommend!"
