Science in Sport Products

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About Science in Sport: Showing 2 products available across UK supermarkets. Prices are updated regularly to ensure accuracy. Cross-store products show the cheapest available price.

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About Science in Sport

Science in Sport (SiS) is a leading UK endurance nutrition brand founded in 1992, pioneering scientifically-based sports nutrition for athletes at all levels. The company revolutionised the industry by creating the world's first isotonic energy gel - the GO Isotonic Gel that can be consumed without water. Based in Blackburn, Lancashire, where they operate a state-of-the-art 160,000 square foot manufacturing facility opened in 2022, SiS maintains the highest standards of quality including rigorous banned substance testing trusted by elite athletes. The brand supplies over 320 professional teams, organisations, and national sports teams worldwide, and won the Queen's Award for Enterprise in 2015. The GO range of isotonic energy gels provides 20g+ of easily digestible carbohydrates using maltodextrin, maintaining a low-sugar profile. Available in flavours including Orange and Pineapple, these vegan and gluten-free gels are designed to fuel performance without causing bloating. The range also includes caffeine variants (75mg or 150mg) and electrolyte-enhanced options. SiS (which also owns PhD Nutrition) represents the gold standard in endurance sports nutrition. Compare Science in Sport energy gel prices at Grocefully to find the best deals across UK supermarkets for your training and race-day fuelling.

FAQs

Grocefully is a smart grocery shopping app that automatically compares prices across all major UK supermarkets (Tesco, ASDA, Sainsbury's, Morrisons, etc.) and helps you buy from the cheapest stores. When you place an order, you authorise Grocefully to act as your purchasing agent — we place orders on your behalf at each supermarket, so you get the best prices without the hassle of managing multiple orders yourself.

Our users save up to 30% on their total grocery bill. For a typical £100 weekly shop, that's up to £30 in savings even after our 5% service fee. The exact amount depends on your shopping habits and the products you buy.

We currently support Tesco, Asda, Sainsburys, Morrisons, Iceland, and Ocado. We're constantly adding new stores and will notify you when more become available. Note: Grocefully is an independent service and is not affiliated with, endorsed by, or a partner of any of these supermarkets.

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Yes! You can link your loyalty cards from each supermarket and continue earning points on all your purchases. We'll automatically apply any available discounts.

We charge a simple 5% service fee on your total order value. For example, if your groceries cost £100, you'll pay £5 as a service fee. This covers our costs for finding you the best prices, handling multiple orders, and providing customer support.

Our users save up to 30% per shop. Even after the 5% service fee, you're still saving up to 25% on average. For a £100 shop, you could save up to £30 and pay £5 in fees, netting you up to £25 in savings!

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If you're not happy with your savings, contact our support team. We'll review your order and if we didn't save you money (after accounting for our fee), we'll refund the service fee. Your satisfaction is our priority.

Yes, you can modify orders up until the supermarket's cut-off time (usually a few hours before delivery). Any changes are automatically synced across all your orders.

If an item is out of stock, we'll automatically find the next cheapest option from another store or suggest a suitable replacement. You can set preferences for how you want us to handle substitutions.

Since you're purchasing directly from each supermarket (with Grocefully acting as your agent), refunds for grocery items are subject to each supermarket's policies. For issues with groceries, we'll coordinate with the relevant supermarket on your behalf. For our service fee, we offer a money-back guarantee if we didn't save you money.

Our customer support team is here to help resolve any issues. We'll coordinate with the relevant supermarket on your behalf to get the issue resolved as quickly as possible.

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