Best Electrolytes UK 2026 — Expert Picks
Whether you train fasted, do endurance sports, or just want to feel more hydrated, electrolytes make a noticeable difference. Plain water is not enough when you are sweating. These are the UK products I use year-round.
Hydration Multiplier
Liquid IV — Cellular transport technology for fast hydration
Pros
- Uses ORS science for rapid absorption
- Great taste range
- Convenient stick packs
Cons
- Contains added sugar for transport
- Expensive per sachet
Zero Sugar Electrolyte Tabs
High5 — UK endurance brand with zero calories
Pros
- Zero sugar and calories
- Effervescent tablet dissolves instantly
- Designed for UK athletes
Cons
- Lower sodium than clinical ORS
- Artificial sweeteners used
Electrolyte Powder
Bulk — Cost-effective bulk powder
Pros
- Full electrolyte profile
- Can custom-dose to needs
- No artificial sweeteners option
Cons
- Plain version tastes salty
- Need to measure each serving
LMNT Electrolyte Drink Mix
LMNT — High sodium for keto and fasting
Pros
- 1000mg sodium per packet
- No sugar or fillers
- Designed for low-carb athletes
Cons
- Very high sodium not for everyone
- Must import to UK
O.R.S Hydration Tablets
O.R.S — NHS-recommended oral rehydration
Pros
- Follows WHO oral rehydration formula
- Available in UK pharmacies
- Proven for dehydration recovery
Cons
- Taste is medicinal
- Lower electrolyte variety
Buying Guide: What to Look For
Look for products with sodium, potassium, and magnesium as the core electrolytes. Sodium is the most important for hydration. If you train intensely or in heat, aim for 500-1000mg sodium per litre. Sugar-containing formulas absorb faster (glucose-sodium cotransport) but are not necessary for everyone. Avoid products that are mostly sugar with token electrolytes.
Frequently Asked Questions
Do I need electrolytes if I just drink water?
If you exercise for over 60 minutes, train in heat, eat a low-carb diet, or drink a lot of plain water, you may be diluting your electrolytes. Adding them can improve hydration, energy, and prevent cramps.
How much sodium do I need during exercise?
A general guideline is 300-600mg sodium per litre of fluid during exercise. Heavy sweaters or those in hot environments may need 700-1000mg per litre.
Can I make my own electrolyte drink?
Yes. Mix 1/4 teaspoon salt, juice of half a lemon, and a teaspoon of honey in 500ml water. It is cheap and effective, though commercial products are more convenient and precisely dosed.
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