SIS HYDRO | Everyday effervescent electrolyte tablets - 6x4.3g / Lemon - Hydration Tablets

SIS HYDRO | Everyday effervescent electrolyte tablets

6x4.3g / Lemon
£7.29
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SIS HYDRO | Everyday effervescent electrolyte tablets - 6x4.3g / Lemon - Hydration Tablets

SIS HYDRO | Everyday effervescent electrolyte tablets

£7.29
Free Delivery When You Spend £100
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FOR SAME DAY DISPATCH
  • Replace what sweat takes away to help maintain performance from first rep to final whistle
  • Clean, low-calorie hydration with no added sugar and no heavy aftertaste
  • Fast-dissolving, drop-and-go tablets—perfect for bottles, shakers, and travel
  • With vitamins B1, B2, and B6 to support normal energy release and protein metabolism
  • Built for training, hot weather, indoor sessions, commuting, and everyday hydration

SIS HYDRO – Everyday Effervescent Electrolyte Tablets

When the heat is on or the pace is relentless, plain water can’t always keep up. SIS HYDRO transforms your bottle into a crisp, effective electrolyte drink that encourages steady sipping and helps you stay on top of hydration—without the sugar hit. Each convenient tablet delivers a targeted blend of sodium, potassium, magnesium, and calcium plus vitamins B1, B2, and B6 to support energy-yielding metabolism. With virtually zero calories and a clean, refreshing taste, it’s the smarter way to hydrate so you can train, compete, and live at your best.

Why choose SIS HYDRO?

  • High-impact electrolyte support: 789 mg of essential electrolytes per serving with a sodium-forward profile to help replace sweat losses and maintain normal fluid balance.
  • Feel-good hydration: Low-calorie formula with no added sugar—no sticky sweetness, no sugar spikes, just clean, refreshing hydration.
  • B‑vitamin support: B1 and B2 contribute to normal energy release from carbohydrates, while B6 supports normal protein metabolism.
  • Convenient and fast: Effervescent tablets dissolve quickly—ideal for the gym, long rides, pitch-side, or your daily commute.
  • Versatile for every day: Use before training to preload, sip during hard efforts or hot days, and top up post‑session to rehydrate effectively.

Made for real-world sweat

From turbo trainer intervals to summer 10Ks, from five‑a‑side under the lights to busy days on your feet—SIS HYDRO helps you stay hydrated and ready. It’s built for runners, cyclists, triathletes, team-sport athletes, gym-goers, and anyone who wants a low-calorie electrolyte boost for daily hydration. Keep a tube in your kit bag or desk drawer and make great hydration the easiest habit in your routine.

Built on sports science

Even modest fluid and electrolyte losses can affect how you feel, move, and focus. HYDRO is formulated to help replace what you lose in sweat and encourage consistent drinking, supporting sustained effort so you can keep your goals in sight.

Product highlights

  • Category: Effervescent electrolyte tablets
  • Electrolytes: Sodium, potassium, magnesium, calcium
  • Vitamins: B1, B2, B6
  • Calories: Virtually none (no added sugars)
  • Format: Single-serve, fast-dissolving tablets
  • Per serving: 789 mg essential electrolytes

Who is it for?

  • Runners, cyclists, triathletes, and gym-goers
  • Team-sport athletes training or competing year-round
  • Anyone seeking a low-calorie electrolyte boost for daily hydration, hot weather, or indoor sessions

Directions

SUGGESTED USE
Add 1 tablet to 500ml of water and let it dissolve. Once prepared consume within 24 hours.

Warnings

Do not consume more than 4 tablets per day.

Additional info

  • Brand: SIS
  • EAN: 5025324013777

Expiry

6x4.3g / Lemon 30-09-2027

Barcodes

6x4.3g / Berry 5025324013777
6x4.3g / Lemon 5025324013784
6x4.3g / Orange Mango 5025324013791
8x20 Tabs / Berry 50253240856042
8x20 Tabs / Lemon 50253240852082
  • 5 stars: 12 (50%)
  • 4 stars: 9 (38%)
  • 3 stars: 3 (13%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
K
Keri Williams
Cheaper to buy per sachet from the supermarket

Very acquired taste, much stronger tasting that other brands....... Tesco sells these for £1 a sachet and sometime on offer at just £0.80.

D
D Mcelroy
Amazing taste

Love the taste and how easy they mix - really refreshing

K
Keri Williams
Cheaper to buy per sachet from the supermarket

Very acquired taste, much stronger tasting that other brands....... Tesco sells these for £1 a sachet and sometime on offer at just £0.80.

O
Oleksandr L
Personal opinion as all bodies are different

Works well for my stomach

P
Pete
Hydration sorted

Absolutely brilliant, tastes like mild strawberry milkshake and works a treat. Tried one during a 23km walk and kept me hydrated and going. Helps to body to maintain hydration and not lose water through pee.

Had no side effects at all. Will definitely try again and probably buy more in the future. The instructions say mix with 500ml of water but my bottles are 750ml and worked very well.

S
Sue D'Nym
Very strong flavour

The flavour is really strong. I mean, surprisingly strong. Usually, I put electrolytes into a glass of water, but the instructions say to put in 500ml water and you really need that much to dilute it down. Even then, it's very strong. I bought the sachets for convenience if I'm travelling, but don't think I'll make this a regular thing.

S
Sue D'Nym
Very strong flavour

The flavour is really strong. I mean, surprisingly strong. Usually, I put electrolytes into a glass of water, but the instructions say to put in 500ml water and you really need that much to dilute it down. Even then, it's very strong. I bought the sachets for convenience if I'm travelling, but don't think I'll make this a regular thing.

K
Keri Williams
Cheaper to buy per sachet from the supermarket

Very acquired taste, much stronger tasting that other brands....... Tesco sells these for £1 a sachet and sometime on offer at just £0.80.

D
D Mcelroy
Amazing taste

Love the taste and how easy they mix - really refreshing

O
Oleksandr L
Personal opinion as all bodies are different

Works well for my stomach

D
D Mcelroy
Amazing taste

Love the taste and how easy they mix - really refreshing

A
Adam
Great Taste - Too Expensive for Long Term

Individually wrapped sachets, just add to water. Super simple to use.

The flavour is fantastic. Sweet, but also has that electrolyte salty taste which makes you know it's doing something.

Bit on the pricey side, but a good way to test the product. Cheaper alternatives if looking for large quantities

S
Sue D'Nym
Very strong flavour

The flavour is really strong. I mean, surprisingly strong. Usually, I put electrolytes into a glass of water, but the instructions say to put in 500ml water and you really need that much to dilute it down. Even then, it's very strong. I bought the sachets for convenience if I'm travelling, but don't think I'll make this a regular thing.

T
The0N3
Tasty and refreshing salty lemonade.

With multiple heatwaves hitting the UK and my sweat pouring every time I exit the house, it is important not only to stay hydrated, but also to restore the minerals your body loses.

I have tried a few electrolyte brands and while some of them are better than others, the majority of them I just do not find particularly palatable and hence avoid drinking (which defeats the purpose).

This electrolyte mix by SiS however is an exception - while it still absolutely has the characteristic taste of electroly drinks, I found the combination with lemons to be very nice.

I could best describe the drink as something akin to a salty lemonade, which I found pleasant and easy to drink.

As expected the drink also contains most of the main nutrients you need when rehydrating and it all comes in very small pouches that mix with water very easily.

At the time of writing this 6 pack is £4.91 (discounted from £8), which makes a single pouch ~82 pence.

This is a little steep for what this is and there is a lot of competition what available for much less per serving.

Having said that, the combination of brand name, compact form factor and good taste may persuade you with sticking with SiS.

Overall, I think this is a good product, though at a slightly elevated price.

A
Adam
Great Taste - Too Expensive for Long Term

Individually wrapped sachets, just add to water. Super simple to use.

The flavour is fantastic. Sweet, but also has that electrolyte salty taste which makes you know it's doing something.

Bit on the pricey side, but a good way to test the product. Cheaper alternatives if looking for large quantities

L
Leanne E
Good price, great flavour

Taste like strawberry nesquik. Great product

O
Oleksandr L
Personal opinion as all bodies are different

Works well for my stomach

P
Pete
Hydration sorted

Absolutely brilliant, tastes like mild strawberry milkshake and works a treat. Tried one during a 23km walk and kept me hydrated and going. Helps to body to maintain hydration and not lose water through pee.

Had no side effects at all. Will definitely try again and probably buy more in the future. The instructions say mix with 500ml of water but my bottles are 750ml and worked very well.

L
Leanne E
Good price, great flavour

Taste like strawberry nesquik. Great product

L
Leanne E
Good price, great flavour

Taste like strawberry nesquik. Great product

T
The0N3
Tasty and refreshing salty lemonade.

With multiple heatwaves hitting the UK and my sweat pouring every time I exit the house, it is important not only to stay hydrated, but also to restore the minerals your body loses.

I have tried a few electrolyte brands and while some of them are better than others, the majority of them I just do not find particularly palatable and hence avoid drinking (which defeats the purpose).

This electrolyte mix by SiS however is an exception - while it still absolutely has the characteristic taste of electroly drinks, I found the combination with lemons to be very nice.

I could best describe the drink as something akin to a salty lemonade, which I found pleasant and easy to drink.

As expected the drink also contains most of the main nutrients you need when rehydrating and it all comes in very small pouches that mix with water very easily.

At the time of writing this 6 pack is £4.91 (discounted from £8), which makes a single pouch ~82 pence.

This is a little steep for what this is and there is a lot of competition what available for much less per serving.

Having said that, the combination of brand name, compact form factor and good taste may persuade you with sticking with SiS.

Overall, I think this is a good product, though at a slightly elevated price.

T
The0N3
Tasty and refreshing salty lemonade.

With multiple heatwaves hitting the UK and my sweat pouring every time I exit the house, it is important not only to stay hydrated, but also to restore the minerals your body loses.

I have tried a few electrolyte brands and while some of them are better than others, the majority of them I just do not find particularly palatable and hence avoid drinking (which defeats the purpose).

This electrolyte mix by SiS however is an exception - while it still absolutely has the characteristic taste of electroly drinks, I found the combination with lemons to be very nice.

I could best describe the drink as something akin to a salty lemonade, which I found pleasant and easy to drink.

As expected the drink also contains most of the main nutrients you need when rehydrating and it all comes in very small pouches that mix with water very easily.

At the time of writing this 6 pack is £4.91 (discounted from £8), which makes a single pouch ~82 pence.

This is a little steep for what this is and there is a lot of competition what available for much less per serving.

Having said that, the combination of brand name, compact form factor and good taste may persuade you with sticking with SiS.

Overall, I think this is a good product, though at a slightly elevated price.

A
Adam
Great Taste - Too Expensive for Long Term

Individually wrapped sachets, just add to water. Super simple to use.

The flavour is fantastic. Sweet, but also has that electrolyte salty taste which makes you know it's doing something.

Bit on the pricey side, but a good way to test the product. Cheaper alternatives if looking for large quantities

P
Pete
Hydration sorted

Absolutely brilliant, tastes like mild strawberry milkshake and works a treat. Tried one during a 23km walk and kept me hydrated and going. Helps to body to maintain hydration and not lose water through pee.

Had no side effects at all. Will definitely try again and probably buy more in the future. The instructions say mix with 500ml of water but my bottles are 750ml and worked very well.

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