Runners’ favourite High 5’s electrolyte tablets are free of sugar but full of flavor.
High 5 is one of the best electrolyte drinks brands that’s been around for a long time and is particularly popular with runners. So Zero hydration tablets are a product from a trusted player in the sports nutrition supplement market. They contain a range of electrolytes (five – hence the name of the company and its flagship product) and enough sodium (250mg per serving) to prevent hyponatremia and support good hydration during exercise.
Men’s Fitness verdict
Ideal when you’re training for extended periods or competing, these tasty tablets dissolve easily and take up minimal room in your kit bag. At 40p per serving, it’s also good value for money.- Great taste with lots of flavors to choose from
- Good value for money
- Convenient as mixes with 750ml water (sports bottle size)
- Heavy, salty sweaters may want more sodium per serving
- Vitamin C is not needed for hydration
- Some flavors contain small amounts of caffeine
Why you can trust Men’s Fitness
We spend hours testing every product or service we review, so you can be sure you’re buying the best. Find out more about how we test. Our team of reviewers includes experienced product testers, PTs, nutritionists and fitness writers – as well as the core MF team – who know exactly what sets the best products apart from the rest. These electrolyte drinks were tested by nutritionist Rob Hobson.
High 5 Zero performance on test
High 5 Zero tablets are suitable for anyone engaging in prolonged exercise. However, heavy, salty sweaters may want something with a slightly higher sodium content. The citrus flavour I tested has a nice balance of sweet and tangy flavour. The tablets are sugar-free and sweetened with sucralose, so they’re low in calories. They’re made with natural colorings too.
High 5 recommends a dose of 1 tablet in 750 ml of water, which is enough to fill a standard-sized water bottle. So I’d say it’s convenient when you’re training for extended periods or competing in an event. If you wanted a higher amount of sodium, you could add two tablets, though that would probably make the drink too sweet. On test, I found these Zero tablets dissolve easily in water without any additional shaking.
High 5 Zero additional ingredients
The tablets contain vitamin C, which is a useful inclusion for several reasons. It’s known to improve immunity and plays an important role as an antioxidant, but it’s not necessary for hydration. However, it’s important to note endurance athletes should avoid any supplements containing antioxidants during the adaptation phase of their training.
Some flavors contain green tea, which has a little caffeine. It’s a minimal amount, but it’s still worth bearing in mind. Particularly if you’re sensitive to caffeine or tend to train late at night.
High 5 uses the same compact and convenient tube packaging as the likes of SIS, so will take up minimal room in your kit bag. At 40p per serving it’s good value for money and there are nine flavors to choose from.
| Serving size | 1 tablet in 750ml water |
| Sodium per serving | 250mg |
| Price per serving | 40p |
| Flavors | 9 available |
How we test electrolyte powders
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 its hydration and nutritional benefits.
