SiS products are backed by sound science and these sodium-rich Go Hydro electrolyte tablets offer reliable hydration support, writes nutritionist Rob Hobson.

As you’d expect from one of the best electrolyte drinks brand like SiS, these tablets do exactly what they say on the tin. The most important electrolyte when exercising is sodium, and the amount used in these tablets is science-driven to promote superior hydration.

Men’s Fitness verdict

Suitable for athletes and Informed Sports approved, these electrolyte tablets provide 870mg of sodium, making them ideal for heavy sweaters. They are also sugar free, easy to mix, and excellent value.
  • Good amount of sodium
  • Lots of flavours
  • Mixes well
  • Some flavours are caffeinated
  • B vitamins may not be needed
  • High sodium not suitable for everyone

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.

sis go hydro single pack shot
The sodium content is high at 870mg – ideal for gym goers who tend to sweat a lot during exercise.

SiS Go Hydro: performance on test

These tablets are suitable for all athletes and are Informed Sports approved, making them a good choice for those engaged in professional competition. The sodium content is high at 870mg, so it’s not a good choice for people who need to restrict their intake of this mineral. But that’s good news for gym goers who tend to sweat a lot during exercise.

The tablets are sugar free and sweetened with sucralose; they also use natural colourings. The strawberry and lime flavour I tested is light and refreshing with a slight tang. You only need one tablet mixed with 500ml of water, so it’s useful for moderate to intense training sessions. I also found that the tablets dissolve quickly in water without any additional shaking.

SiS Go Hydro: additional benefits

These tablets contain B vitamins, used in the body to convert food into energy and to support a healthy nervous system and cognition. These vitamins also play a role in electrolyte transport systems in the body. Still, I don’t think they’re really needed in an electrolyte supplement, especially as they’re so abundant in our diet. Some flavours also contain green tea extract, which has a little caffeine. So make sure you check if you’re sensitive to caffeine or tend to train later in the evening.

The packaging is small and convenient so it’s no hassle to keep a tube in your kit bag. SIS is a well-established brand that produces top-quality products with sound scientific foundations – as its name suggests. At 40p per serving, Go Hydro tablets are good value and you can choose from 13 great tasting flavours. SiS products are available in many sports and fitness outlets, as well as online.

Serving size:1 tablet in 500ml water
Sodium per serving:870mg
Price per serving:40p
Flavours:13 available