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From magnesium waters to electrolyte drinks – your round-up of workout companions
Written byJodi M Johnson
Reviewed byHeeral Patel
From magnesium water to electrolytes, soluble tablets and gels, there are lots of ways to replenish and refresh as you work up a sweat. We ask our in-house nutritionist how it all works...
Our top picks
Purely from plants
Tenzing
Tenzing Natural Energy Drink Pineapple & Passion Fruit 330ml
18+
16+
£2.20
Citrus & botanicals
TriActive
TriActive Pre-Workout Electrolyte Effervescent Ginger & Lemongrass 20 Tablets
Save up to 1/2 Price
£6.00
£8.00
Blackcurrant
SiS
SiS GO Isotonic Energy Gel Blackcurrant 60ml
£1.65
Most of us know that staying hydrated contributes to our overall wellbeing. Water helps us to regulate our temperature, delivers nutrients to cells and supports the normal functioning of our organs.1 What you may not know is that staying hydrated during an intensive workout isn't always that simple.
When you sweat, you also lose electrolytes (essential minerals in your sweat), meaning that these too need to be replaced.2 Our nutritionist, Leila Weller-Kis, points out “electrolytes help distribute more water in the body, by helping balance the water to make sure it gets everywhere it's needed”.
We’ve pulled together a list of our favourite products to help quench your thirst, support your energy levels and keep you feeling your best during intense gym sessions or endurance exercise. You’ll discover why we love them, what they do, their benefits and why you love them too – especially when it comes to fuelling workouts.
Refreshing ideas for your workouts
Meet your new pre-workout: a triple-action combo designed to support body, mind and muscle. TriActive delivers 150mg of slow-release caffeine (the equivalent of 2.5 instant coffees) to give your gym session the pep it needs.1
It contains electrolytes to support hydration, as well as vitamin B12 for normal psychological function and vitamin B5 (pantothenic acid) to help the body turn food into energy and help reduce tiredness and fatigue.2,3,4
Blend three level teaspoons with 300ml of water for a refreshing, raspberry and lime flavoured pre-workout drink. Now, time to hit the gym...
Always forget your pre-workout? No problem: throw these effervescent tablets in your gym bag and you’re set wherever you go.
Each contains 50% of your daily vitamin C for normal bones and cartilage, and to support immune health.5-8 And that’s not all – there are essential minerals magnesium and potassium too.
Just dissolve one sugar-free tablet in 200ml water and you’ve got an orange drink at the ready.
Hydration is your workout’s best friend: not having the fluids you need can impact exercise.
That’s why we love our TriActive electrolyte tablets, made to deliver essential salts to your body.
There’s 125mg magnesium – 33% of your NRV – to aid electrolyte balance, support normal muscle function and help reduce tiredness and fatigue.9-12
There’s also 50% of your daily vitamin C for energy support – together, this zingy ginger and lemongrass blend provides a triple formula that supports mind, body and muscles.
Ready to get up and go? Dissolve one tablet into 200ml water and enjoy its zingy flavour.
Looking for an electrolyte drink that supports post-exercise recovery and hydration? We Hunter & Gathered that’d be the case.
Tap into the primal power of earth-derived minerals – sodium, potassium and magnesium, to support your mental and physical performance.
Not sure which flavour to pick? Discover your new favourite with this multipack of mixed berry, lemon and lime or simply unflavoured. When you’ve found yours, good news, you can also buy a box of each of these individually.
There’s more... These Restore sachets contain no added sugar or sweeteners and are keto, low-carb, gluten free and paleo-friendly. We’ll drink to that!
ActiPH is the first and only alkaline water on the market with the highest pH of any bottled water in UK.
From the fresh Shropshire Spring, this ionised water has a pH of 9.0 and is uniquely blended with a combination of electrolytes, such as magnesium, sodium and potassium.
What our customers say: “I have a hard time getting enough water throughout the day. This has a lovely clean taste and makes drinking water for me so much more enjoyable.” - Nadine
Dextrose is a naturally occurring, primary source of energy for our bodies.
These refreshing orange tablets not only offer 88% dextrose, but they also contain vitamin C, which contributes to the normal function of the immune system.3 Win win.
What our customers say: “I absolutely love this product! They melt in the mouth and give you energy.” - 10na
TENZING offers a plant-based invigorating pineapple and passion fruit drink containing electrolytes and vitamin C.
The brand was inspired by one of the first two men to summit Mount Everest - and the Himalayan Sherpas.
What our customers say: “Very good energy drink, thoroughly recommended.” - Daryl
One of the most abundant minerals in the body, magnesium supports many functions and is very important for energy release, helping to convert food into energy.4
Magnesium is an essential electrolyte. Each can contains 180mg of elemental magnesium and offers an easy, effective and great-tasting way that contributes to your body’s daily magnesium requirements.
What our customers say: “Very refreshing flavour and an easy way to get magnesium. Best served on ice in a long glass or chilled can.” -
BelgraviaBunny
When you’re training hard or just feeling a little depleted, staying hydrated isn’t always easy. This blue raspberry powder blends five key electrolytes with essential B vitamins to help support fluid balance and energy levels. Plus, magnesium5 plays a role in keeping your electrolytes in check, while vitamin B66 helps the body to use and store energy.
Mix one scoop with water whenever you need a hydration support – before your workout, during a sweaty session or even after a late night. It’s a refreshing way to rehydrate and keep your energy steady.
The final say
Hydration plays a significant role in maintaining overall wellbeing, while energy sources can also have you feeling ready to do another round in the gym (or lap around the park).
Wondering how else you can replenish yourself after a workout? Check out these muscle recovery foods.
The subjective customer reviews should not be regarded as medical or health advice; no reliance should therefore be placed on them; and they are not endorsed by Holland & Barrett. If you have any health problems or questions regarding the suitability of any product, please contact a health professional.
1. NHS Fife. Caffeine [Internet]. NHS Fife [reviewed 2020 May; cited 2025 Jul 23]. Available from: https://www.nhsfife.org/media/f7r7z2nz/caffeine-handout.pdf
2. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6485
3. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6432
4. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6435
5. NHS. Vitamin C [Internet]. NHS [reviewed 2020 Aug 3; cited 2025 Jul 23]. Available from: https://www.nhs.uk/conditions/vitamins-and-minerals/vitamin-c/
6. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6500
7. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6502
8. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6510
9. NHS. Vitamins and minerals – others [Internet]. NHS [reviewed 2020 Aug 3; cited 2025 Jul 23]. Available from: https://www.nhs.uk/conditions/vitamins-and-minerals/others/
10. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6402
11. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6405
12. European Commission. Characteristics [Internet]. European Commission [cited 2025 Jul 23]. Available from: https://ec.europa.eu/food/food-feed-portal/screen/health-claims/eu-register/details/POL-HC-6401
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