Best Electrolytes UK 2026 — What to Look For
Best electrolytes UK 2026 — what to look for
Electrolytes are essential minerals — sodium, potassium, magnesium, calcium and chloride — that regulate fluid balance, nerve function, muscle contraction and energy production in every cell of the body. Most people are mildly electrolyte deficient without realising it, particularly in the UK where sweating, exercise, stress and low dietary mineral intake all deplete electrolyte levels. The supplement market for electrolytes has grown significantly but the quality varies enormously. Here is exactly what to look for.
What makes the best electrolyte supplement?
1. All five key electrolytes included
Many products focus only on sodium, potassium and magnesium. A comprehensive electrolyte supplement should include all five key electrolytes — sodium, potassium, magnesium, calcium and chloride — because they work together in the body. Missing one creates imbalances that the others cannot compensate for.
2. Clinically meaningful doses
The label milligrams matter. Many electrolyte products contain so little of each mineral that they produce no meaningful physiological effect. Look for at least 200mg of sodium, 150mg of potassium and 50mg of magnesium per serving as a minimum meaningful dose. Products with just 5 to 10mg of each are effectively water with branding.
3. No added sugars
Traditional sports drinks use sugar to drive fluid absorption — but at the cost of significant calorie intake and blood sugar spikes. Modern electrolyte supplements use sodium-driven absorption mechanisms instead, which are more efficient and do not require sugar. Avoid any electrolyte product with added sugars or high-calorie sweeteners.
4. Added B vitamins for energy
The best electrolyte supplements include B vitamins alongside the minerals. B vitamins are essential co-factors for energy metabolism and are depleted by the same factors that deplete electrolytes — exercise, stress and poor diet. Including B vitamins in an electrolyte formula addresses both hydration and energy simultaneously.
5. Convenient format
The best format for daily electrolyte use is a single-serve sachet or tablet that dissolves completely in water. Loose powders with inconsistent measuring and large bottles of pre-made drinks are both less practical for daily use. A sachet format provides consistent dosing and portability.
Who needs electrolyte supplements in the UK?
- Runners and endurance athletes: sodium and potassium losses through sweat are significant during prolonged exercise and need active replacement
- Women during perimenopause and menopause: hormonal changes affect fluid regulation and electrolyte balance — many women find electrolyte supplementation reduces fatigue and improves energy
- Anyone with a high-stress lifestyle: cortisol depletes magnesium and potassium — the most common electrolyte deficiencies in stressed adults
- People on low-carbohydrate diets: reduced carbohydrate intake lowers insulin levels which increases renal excretion of sodium and other electrolytes
- Anyone experiencing fatigue, muscle cramps or headaches: these are among the most common symptoms of mild electrolyte imbalance
Electrolytes and menopause
Oestrogen plays a role in fluid regulation and electrolyte balance. As oestrogen declines during perimenopause, many women notice increased fatigue, muscle cramps and reduced exercise tolerance — all of which can be signs of electrolyte imbalance. Magnesium deficiency in particular is extremely common in menopausal women and compounds the sleep, mood and energy challenges of the hormonal transition.
Combining electrolyte supplementation with Kollo Balance+ — which includes magnesium alongside lion's mane, ashwagandha and sage — addresses both the electrolyte and hormonal aspects of menopausal fatigue and energy decline.
Kollo Electrolytes+
Kollo Electrolytes+ delivers a comprehensive electrolyte formula with sodium, potassium, magnesium and B vitamins in a convenient daily sachet. Sugar-free, naturally flavoured and designed for daily use rather than occasional sports recovery. For the full picture of how electrolytes fit into a daily wellness routine, read our guide to the best supplements for women over 40.
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.
