With a good range of flavours, and available with or without caffeine, these mini tubes are ideal for hydrating on the go…

Nuun’s Hydration Sport range of the best electrolyte drinks is available with or without caffeine and contains a good blend of electrolytes. The sodium content of these tablets is enough at 300mg to ward off hyponatraemia and promote good hydration during moderate or intense exercise.

Men’s Fitness verdict

Containing natural sweeteners & colourings, these sugar-free tablets offer a good blend of electrolytes and dissolve well with water. The flavours could be stronger, but there are 13 to choose from.
  • Good blend of electrolytes
  • Naturally sweetened and coloured
  • Versions available without caffeine
  • Flavour is not the strongest
  • Pack size is small, containing only 10 tablets

How we tested the best electrolyte drinks

Nutritionist Rob Hobson has tested eight of the best electrolyte drinks to help you find the right one to support your hydration and recovery needs. An award-winning, registered nutritionist and sports nutritionist with over 15 years of experience, Rob is a distinguished expert in the fields of nutrition, health, and sports. During the testing process, Rob tested each electrolyte drink for taste, solubility and effectiveness in terms of their hydration and nutritional benefits.

As each tube only contains 10 tablets, they’re convenient to carry around in a pocket or kit bag.

Nuun Hydration Sport benefits

These tablets are sugar-free, sweetened with natural sweetener stevia and naturally coloured with beetroot powder. I was particularly impressed by the ingredient list, which was the most natural of all the electrolytes I’ve reviewed.

As each tube only contains 10 tablets, they’re the most convenient on test to carry around in a pocket or kit bag. At 65p per serving, they’re not the cheapest, and if you want to fill a larger water bottle you’ll need to double the dose, increasing the cost.

They’re available online only, but there are 13 flavours to choose from, including four caffeinated versions.

Nuun Hydration Sport: performance on test

I found these electrolyte tablets dissolved well in water and didn’t require any shaking. Nuun recommends one tablet should be dissolved in 475ml water per serving. So, if you’re filling a 750ml water bottle for training or competition you’ll need more than one tablet so it’s not too diluted. Just bare in mind that multiple doses will mean taking in more than the 300mg sodium in each tablet. That may be too much, particularly for light sweaters.

The lemon and lime flavour I tested has a pleasant flavour, although it’s not as strong as some of the other electrolyte tablets I’ve tried. This might not be the electrolyte drink for you if you prefer a more intense or sweeter taste.

Serving size:1 tablet in 475ml water
Sodium per serving:300mg
Price per serving:65p
Flavours:13 flavours available (4 caffeinated)