The Complete Guide to Electrolytes UK | Kollo Electrolytes+
You can eat perfectly, train consistently and take the best supplements available – and still feel exhausted, crampy and mentally foggy if your electrolytes are off.
Electrolytes are not a trend. They are not a sports drink gimmick. They are fundamental minerals that govern how every cell in your body functions – and most people in the UK are not getting enough of them, every single day.
Fatigue that hits mid-afternoon. Muscle cramps during or after exercise. Headaches with no obvious cause. Brain fog. Poor sleep. Feeling thirsty no matter how much water you drink.
These are not random inconveniences. They are frequently the direct result of electrolyte imbalance – and they are entirely addressable.
This is the complete guide to electrolytes in the UK. What they are, what they do, who needs them and why the quality and source of your electrolyte supplement matters as much as taking one in the first place.
What Are Electrolytes?
Electrolytes are minerals that carry an electrical charge when dissolved in fluid. Inside the body, they are present in blood, urine, tissues and cells – where they regulate a remarkable range of critical functions.
The primary electrolytes are sodium, potassium, magnesium, calcium, phosphate and chloride. Each plays a distinct role, but they work as an interconnected system – the balance between them is as important as the presence of any individual mineral.
Every time you sweat, urinate or breathe, you lose electrolytes. Unlike fat-soluble vitamins, the body cannot store electrolytes in meaningful quantities – they must be replenished consistently through diet and, when diet falls short, through targeted supplementation.
Why Most People Are Electrolyte Deficient
The modern UK diet is poorly suited to maintaining electrolyte balance. Ultra-processed foods are high in sodium but low in potassium and magnesium. Fresh fruit and vegetables – the primary dietary sources of potassium – are consumed well below recommended levels by the majority of adults. The UK's limited sunlight reduces outdoor physical activity for much of the year, while indoor heating and air conditioning increase insensible fluid and electrolyte loss.
Add exercise, alcohol, caffeine, stress or any illness involving fever or digestive symptoms – all of which accelerate electrolyte depletion – and the picture becomes clear. Electrolyte insufficiency is not a niche problem for elite athletes. It is a common, everyday issue affecting energy, cognition and physical performance for millions of people.
What Kollo Electrolytes+ Contains – and Why Each Ingredient Matters
Kollo Electrolytes+ is a precision-dosed electrolyte formula built around seven active ingredients, each chosen for a specific, evidence-informed reason.
Himalayan Pink Salt (Sodium Chloride) – 800mg Sodium per serving
Sodium is the primary extracellular electrolyte – the mineral that governs fluid balance outside cells, supports nerve impulse transmission and enables muscle contraction. It is the electrolyte lost in the greatest quantity through sweat, and its depletion is the most common cause of exercise-related cramping, fatigue and impaired performance. Himalayan Pink Salt provides sodium in a naturally occurring mineral matrix alongside trace minerals, making it a cleaner source than refined table salt. At 800mg of sodium per serving, Kollo Electrolytes+ delivers a meaningful replacement for what is lost through sweat and daily activity.
Potassium Chloride – 260mg
Potassium is the primary intracellular electrolyte – working in opposition to sodium to maintain the electrical potential across cell membranes that enables nerve signalling and muscle contraction. The sodium-potassium balance is one of the most tightly regulated systems in the body, and disruption in either direction has immediate functional consequences. Most UK adults consume less than the recommended 3,500mg of potassium per day. Supplementing potassium alongside sodium ensures the critical balance between these two electrolytes is maintained rather than skewed by sodium supplementation alone.
Aquamin® MgAG (Magnesium Hydroxide)
Aquamin® MgAG is a premium, marine-sourced magnesium ingredient derived from seawater – a naturally mineral-rich source that provides magnesium alongside a broad spectrum of trace minerals. Magnesium is involved in over 300 enzymatic reactions in the body, including those governing energy production, muscle relaxation, nervous system regulation and sleep quality. It is the electrolyte most commonly deficient in the UK population – with estimates suggesting that up to 70% of adults do not meet the recommended daily intake. Aquamin® is chosen over synthetic magnesium sources for its superior bioavailability and natural mineral complexity.
Dicalcium Phosphate – 134mg Calcium, 105mg Phosphorus
Calcium and phosphate are the primary minerals in bone, but both also function as electrolytes in their ionised forms. Calcium is essential for muscle contraction – including cardiac muscle – nerve transmission and blood clotting. Phosphate plays a critical role in energy metabolism as a component of ATP (adenosine triphosphate). Dicalcium phosphate provides both minerals simultaneously in a highly bioavailable form, supporting the bone health, energy and neuromuscular function aspects of the electrolyte system.
Vitamin C (Sodium Ascorbate) – 80mg (100% NRV)
Vitamin C as sodium ascorbate is a buffered, non-acidic form of Vitamin C that is gentler on the digestive system than ascorbic acid – particularly relevant in a hydration formula that may be consumed during or after exercise. Beyond its well-established immune and antioxidant roles, Vitamin C supports the absorption of iron, contributes to the reduction of oxidative stress during exercise and supports connective tissue repair. In the context of an electrolyte formula, it adds meaningful nutritional value without contributing to digestive discomfort.
Zinc (as Zinc Citrate) – 10mg (100% NRV)
Zinc is an essential mineral for immune function, normal skin maintenance, wound healing and collagen synthesis. At 10mg – 100% of the daily NRV – this is a meaningful, full-dose inclusion that complements the hydration and energy focus of the formula with important skin and immune support.
Vitamin B5 (Calcium Pantothenate) – 6mg (100% NRV)
Vitamin B5 is essential for energy metabolism – specifically for the synthesis of coenzyme A, which is required for the oxidation of fatty acids and carbohydrates to produce ATP. In plain terms, B5 is directly involved in how efficiently the body converts food into usable energy. During exercise or periods of high energy demand, adequate B5 supports the metabolic processes that keep energy production running smoothly.
Vitamin B6 (Pyridoxine Hydrochloride) – 1.4mg (100% NRV)
Vitamin B6 contributes to normal energy-yielding metabolism, the reduction of tiredness and fatigue, normal psychological function and the regulation of hormonal activity. It also supports protein metabolism and the synthesis of neurotransmitters including serotonin and dopamine – making it a valuable inclusion in a formula designed not just for physical hydration but for overall daily energy and cognitive function.
Who Needs Electrolytes?
The short answer is everyone – but certain groups have particularly high requirements or are at heightened risk of deficiency.
Active individuals: Even moderate exercise significantly increases electrolyte loss through sweat. The common advice to simply drink more water during exercise can actually worsen electrolyte imbalance if the water is not accompanied by sodium and other minerals – a condition known as hyponatraemia.
Women during perimenopause and menopause: Hormonal changes during the menopause transition directly affect fluid and electrolyte regulation. Oestrogen influences sodium retention and kidney function, and its decline can contribute to increased electrolyte loss and dysregulation. Many women going through menopause find that electrolyte supplementation meaningfully improves energy, reduces cramping and supports better sleep – outcomes that align with the specific hormonal mechanisms involved.
People who consume caffeine or alcohol regularly: Both caffeine and alcohol are diuretics – they increase urine output and accelerate the excretion of electrolytes, particularly sodium, potassium and magnesium. Regular consumers of coffee, tea or alcohol have higher baseline electrolyte requirements than those who do not.
Those following low-carbohydrate or ketogenic diets: Reducing carbohydrate intake lowers insulin levels, which in turn reduces the kidney's retention of sodium. The result is significantly increased sodium – and consequently potassium and magnesium – excretion, particularly in the early stages of dietary transition.
Electrolytes vs Plain Water – Why Hydration Is More Than Just Drinking More
One of the most persistent misconceptions about hydration is that drinking more water solves the problem. It does not – at least not on its own.
Water moves across cell membranes by osmosis, following electrolytes. If you drink large volumes of plain water without adequate electrolytes, you dilute the electrolyte concentration in your blood – which can actually worsen cellular hydration and trigger the same symptoms as dehydration: fatigue, headaches, muscle weakness and cognitive impairment.
True hydration requires water and electrolytes in the right ratio. This is why Kollo Electrolytes+ is designed not just to replace fluid but to optimise the electrolyte environment in which cellular hydration takes place.
When and How to Use Kollo Electrolytes+
Daily hydration: One sachet mixed into 500ml of water, taken at any point during the day. For most people, morning or mid-morning works well – addressing the electrolyte deficit that builds during sleep.
Around exercise: Take one sachet 30–60 minutes before exercise, or during longer training sessions. Post-exercise supplementation supports recovery by replacing what was lost through sweat.
During illness: Fever, vomiting and diarrhoea all cause rapid electrolyte loss. Kollo Electrolytes+ provides a clean, effective way to support rehydration during and after illness without the artificial colours, sweeteners and excessive sugar found in mainstream sports drinks.
Hot weather and travel: Heat and air travel both increase fluid and electrolyte loss significantly. Taking Kollo Electrolytes+ during hot days or on long flights is a simple, effective way to maintain hydration and energy.
For a complete daily wellness routine, many Kollo customers combine Electrolytes+ with Kollo Premium Liquid Marine Collagen – supporting hydration and performance alongside skin, hair and joint health from the inside out.
Precision hydration. Not just water.
Seven active ingredients. Aquamin® marine magnesium. Himalayan sodium. Clean, effective electrolyte replenishment for every day.
Shop Kollo Electrolytes+ →Why Kollo Electrolytes+ Is Different from Sports Drinks
Mainstream sports drinks are primarily sugar delivery vehicles with a small amount of electrolytes added. They were designed to provide energy during prolonged endurance exercise – not to address the everyday electrolyte needs of active, health-conscious adults.
Kollo Electrolytes+ contains no sugar, no artificial colours, no synthetic sweeteners and no unnecessary fillers. Every ingredient serves a specific nutritional function. The result is a formula that delivers genuine electrolyte replenishment without the blood sugar spike, crash and caloric load of conventional sports drinks.
Frequently Asked Questions
What are the best electrolytes in the UK?
The best electrolyte supplement provides a balanced combination of sodium, potassium, magnesium and calcium alongside supporting nutrients, without unnecessary sugar or artificial additives. Kollo Electrolytes+ delivers all of these through premium ingredient sources including Aquamin® marine magnesium and Himalayan Pink Salt, with added B vitamins and Vitamin C for energy and immune support.
Do I need electrolytes if I drink enough water?
Yes – water and electrolytes are not interchangeable. Drinking large amounts of plain water without adequate electrolytes can actually dilute the mineral concentration in your blood, impairing cellular hydration. True hydration requires both fluid and the electrolytes that regulate how that fluid is distributed and used at the cellular level.
Can I take electrolytes every day?
Yes – daily electrolyte supplementation is safe and beneficial for most people. Electrolytes are water-soluble minerals that the body excretes regularly; daily replenishment simply maintains optimal levels rather than allowing them to deplete between occasional supplementation.
Are electrolytes good for menopause?
Yes – hormonal changes during perimenopause and menopause directly affect fluid and electrolyte regulation. Many women find that consistent electrolyte supplementation meaningfully improves energy levels, reduces muscle cramping, supports better sleep and helps manage some of the fatigue associated with the menopause transition.
What is Aquamin® MgAG?
Aquamin® MgAG is a premium, marine-sourced magnesium ingredient derived from seawater. It provides highly bioavailable magnesium alongside naturally occurring trace minerals, making it a superior source compared to synthetic magnesium compounds. It is the form of magnesium used in Kollo Electrolytes+.
Do electrolytes help with muscle cramps?
Yes – muscle cramps during or after exercise are frequently caused by sodium and magnesium depletion through sweat. Replacing these electrolytes before, during and after exercise significantly reduces cramping frequency and severity in most people.
Are Kollo Electrolytes+ sugar-free?
Yes – Kollo Electrolytes+ contains no sugar, no artificial sweeteners and no artificial colours. It is a clean, precision-dosed electrolyte formula with no unnecessary additives.
Looking for a complete supplement routine? Read our guide to the best supplements for women over 40 — covering collagen, menopause support, creatine and electrolytes in one complete daily stack.
Eight active ingredients. 800mg Sodium. 100mg Aquamin® Magnesium. 260mg Potassium. Zinc, Calcium, Phosphorus, Vitamin C and B Vitamins – all at 100% NRV.
No sugar. No artificial colours. No compromise.
Real hydration for every day – not just match day.
Shop Kollo Electrolytes+ →
Kollo Health was co-founded by Jenni Falconer - TV presenter, Smooth Radio breakfast host, ten-time London Marathon runner and host of the RunPod podcast. Read her story and why she created Kollo.
