Science In Sport | Hydro Tablets + Electrolytes | 20 Tablets

Science In Sport Hydro Tabs are designed to ensure you are effectively hydrated to produce your best performance. As an effervescent tablet that readily dissolves in plain water, it represents a highly practical approach (simply drop one tablet in your 500 ml water bottle) without the calories. Hydro meets your sodium requirements at a specific concentration (30mmol/L) that is scientifically proven to produce superior hydration compared with water alone. It was developed to keep the British Sailing team optimally hydrated at the 2008 Beijing Olympics. Simply drop a tablet into water for effective hydration, with virtually no calories, before and during sports.

  • Hydration Tablets: Includes 1 tube with 20 vegan hydration tablets
  • Plus Electrolytes: Contains just the right amount of scientifically researched clinical doses of all your body's essential electrolytes, to ensure you can go further for longer by dramatically reducing fatigue from electrolyte imbalances
  • High in Sodium: Meets your sodium requirement at a specific concentration (30 mmol/Litre) that is scientifically proven to produce superior hydration compared to water alone
  • Vegan Approved: Vegan and gluten-free hydration tablets with natural flavours, B vitamins and zero sugar
  • Pioneer in Sports Nutrition: Since being established in 1992, Science In Sport has been an industry-leading company, working with research institutes, elite athletes, performance directors, and sports scientists

Why Choose?

Hydro is designed to ensure you are effectively hydrated to produce your best performance. As an effervescent tablet that readily dissolves in plain water, it represents a highly practical approach (simply drop one tablet in your 500 ml water bottle) without the calories.


Hydro meets your sodium requirements at a specific concentration (30mmol/L) that is scientifically proven to produce superior hydration compared with water alone. It was developed to keep the British Sailing team optimally hydrated at the 2008 Beijing Olympics. Simply drop a tablet into water for effective hydration, with virtually no calories, before and during sports.


  • Optimum hydration in a convenient format
  • High in sodium to help promote hydration
  • Simply drop in water to provide a high electrolyte drink
  • When hydration is required without the added calories

Hydro + Caffeine

The addition of 75mg of caffeine has been repeatedly shown by sport scientists to improve performance by providing both a physical and mental boost.


Electrolytes including sodium, potassium and magnesium are lost through sweat and need to be replaced in order to help the body maintain fluid balance, alongside an appropriate fluid intake.


Informed Sport Registered:


Our complete product range is developed using a world-class approach to banned substance testing, providing assurance for athletes.
Suitable For: Vegans, Vegetarians, Lactose free, Nut Free, Soya Free

Example below is for Lemon Flavour.

Typical ValuesPer 100gPer Tablet
Energy 758kj/177kcal 32kj/7kcal
Fat 0.5g 0.5g
of which saturates 0.3g 0.1g
Carbohydrates 16g 0.7g
of which sugars 0.9g 0.5g
Salt 20.6g 0.87g
Vitamin B1 Thiamine 4.8mg 0.2mg
Vitamin B2 Riboflavin 7.1mg 0.3mg

Ingredients:

Citric Acid, Electrolytes 37% (Sodium Bicarbonate, Sodium Chloride, Calcium Carbonate, Potassium Chloride, Tricalcium Phosphate, Magnesium Carbonate), Sorbitol, Inulin, Green Tea Extract, Colour (Beetroot Red), Natural Flavouring, Elderberry Powder (2.3%), Starch, Sweetener (Sucralose), Vitamins (Pyridoxine Hydrochloride, Riboflavin, Thiamin)

RETURNS In the event that you are no satisfied with your order you have the right to cancel within 14 days of the contract, or 14 days of receipt of the goods (whichever is the longer). If you wish to return your parcel, you can do so through our returns portal. Unfortunately, we cannot cover the cost of return postage. Please note: Returns must be made within 14 days of delivery. Any returns outside of the 14-day period may be accepted at the discretion of PhD Nutrition We are unable to offer part refunds on products that have been purchased as part of a bundle deal You are responsible for the cost of the return shipment We reserve the right to refuse returns or to charge you fees and expenses if the product is received otherwise than in accordance with our requirements

Where is my order? You will receive a confirmation email immediately after ordering and then an SMS from Evri when your order is out for delivery, usually 1-3 days after ordering. Customers will receive details of their expected delivery date from Evri via email.
How much does delivery cost? Free delivery to the UK Mainland.
Which couriers do you use? We use Evri on all orders.
How long does delivery take? Orders are typically delivered within 1-3 days from despatch.
Can I change my order details after it has been placed? Unfortunately, we are unable to amend orders after they have been placed as we generally dispatch orders soon after they have been made. This includes changing the products ordered, the delivery option, delivery address details or payment methods.