Science in Sport (SiS) Reviews 64,815

I’ve been using Rego Recovery for over 20 years and it’s still the best. The taste has changed recently, I think this is due to a sweetener. My only gripe is the packaging, it’s not easy to close th... See more

The gels themselves are good, but the packaging can be difficult to open with sweaty or numb fingers! It would be very helpful to have a perforation or to have the rip-off notch slightly lower in rela... See more

The actual goods ordered were a high standard and as described. However having paid for next day delivery it actually took 4 days to arrive. Do not pay for next day delivery it’s a scam

Gave a previous 3 star review and couldn't find a way to edit so updating here. In short, Evri lost the order, SiS were quick to refund when contacted and the order verified as lost. The ever contrary... See more

Before making a purchase, I inquired about delivery times in the UK because I was only going to be there for a week. I arrived on Saturday, and since they don't work weekends, I only received a respon... See more

I have used these gels for some time. As a type 1 diabetic they are a pretty good remedy for low blood sugar, offering correction a little slower than glucose but performant in most scenarios. Sadly,... See more

I had an issue with a subscription delivery but SiS speedily resolved it with a choice of re-delivery or refund. Happy to say I ended up with the products I wanted very shortly afterwards.

Seem to have completely random stock levels. They don’t seem to make protein bars anymore. I can’t be certain because customer service didn’t respond when I asked why they’d stopped my subscription. S... See more

Been using choc rego for nearly 15 years the large tubs are now bags and the flavour has changed a little but still enjoyable. The new shakers are much better meaning your shake is ready quicker and m... See more

Vitamins arrived quickly, and once arrived the item batch number was listed on informed sport so it was safe for my son to take. Thanks, we will definitely buy again. Is there any way the current bat... See more

I’ve been using SIS recovery shakes throughout my marathon training and they’ve made a real difference. Not only do they taste great, but they’ve helped me hit my running goals and build lean muscl... See more

SiS High quality healthy sports nutritional products keep me (a vegetarian) energized throughout my very busy working week, when I seldom get time to eat proper meals. A life saver!

The berry flavour are the best tasting electrolytes in my opinion! And the subscription service is easy, they even sent me a free gift after a 2 or 3 months

Received the free sample The GO Isotonic Gels in particular are great because they don’t require water, which is perfect during long runs or rides. Received a free sample number 1002741299 The... See more

Can always rely on a quick reliable dispatch from SIS. Sadly on this occasion the courier failed on all levels. Thankfully SIS came to the rescue with an immediate re-order on the missing goods. Than... See more

Writing to describe our experience. Have been a long term subscriber of some protein powder. On several occasions we have complained re taste changes to some batches, but each time we have either rece... See more

An item from my order was missing, i emailed to check what had happened & Beth had literally replied within minutes letting me know it was out of stock at the time but would be delivered the v... See more

I’ve been using SIS for over five years now, I’ve used a wide range of products and they’re always great quality. They’re customer service team have always been fantastic and friendly which makes such... See more

I had two orders delivered to me within two weeks costing over £120, one apparently on subscription- which I did not set up. Paid twice for a return courier - didn’t arrive. Still have the return par... See more

I recently ordered directly from the SiS website and the whole process was super easy and smooth. The website is user-friendly, ordering took just a few minutes, and I got a confirmation right away.... See more

Contacted SIS to see if they could help us with some products for our volunteers on South Snowdonia Search and Rescue team. Johnathan was extremely helpful and we received a very generous donation of... See more

I have used SIS in the past, the hydro electrolytes tablets. I have a 4hr grading coming up soon and some extra boosts throughout, as it is going to be intense...so I ordered the hydro gel fuel. Thes... See more

I made an order for a SIS item through a third party, and unfortunately I was sent the wrong item. I tried to resolve the issue through the third party, but they were atrocious and just ignored a... See more

So I managed to put some energy chews in my basket x 3 my fault. It wasn't until I checked out I realized and it was a Sunday morning. I quickly found the customer services email and exp... See more

Used the SiS Marathon fuelling guide to select a range of gels and chews to use for training runs and prepare for marathon fuelling during the race. Fast order completion and delivered in 2 days, fa... See more

Easy ordering process and prompt delivery. Website is very easy to navigate and I am a regular user over many years. Good selection of products and at a competitive price. Delivery made next... See more

Great Company! Fast Delivery! Great Products especially the Super Strength Cod Liver Oil Capsules to keep these old knees going when Me and Rodders go out Cycling together. Luvvly Jubbly!

Arrived quickly and tastes just as good as I remembered (not used it for a few years) but as training & racing intensity is in the up felt I needed it’

The perfect running gels for the subscription price. They're only beaten by the competition when there are other offers and discounts, but for frequent runners, it's a no-brainer to stock up on SiS pr... See more

Somewhere along the line, you have to trust what a company is telling you. SIS I do believe us one of those you can put your trust in, and believe in their products. Long story short, I am using t... See more

Had the misfortune of having a parcel lost whilst out for delivery but after an email to customer services, a new package was sent out and delivered by lunchtime the next day. Great response by the Si... See more

I ordered a bottle which arrived quickly and was as advertised. Unfortunately there was a weird smell that wouldn't go away despite washing. I got in contact and Johnathan was very helpful and sent me... See more

I love the concept of subscription order. Great products on constant timely deliveries. Makes training life a little bit more easier. Shipping was made on time.

I've used their isotonic gels and hydration tablets for a while. They work great and taste really good with no unpleasant aftertaste like many others. Ordering online is easy, and the delivery was qui... See more

I was recovering from a shoulder injury and expected to recover in about 2 to 3 weeks. Then for the first time I tried these tablets just bought. Results were great I recovered just in few days i... See more

Fantastic products and blazing-fast delivery! The website is a breeze to use, with clear product info and an amazing subscription discount. Highly recommend!

Purchased 3 water bottles However one had a leak But customer service immediately got back to me and replaced the bottle with another two !!! Next day delivery as well Fantastic service SI... See more

The ordered product was delivered as expected and within the promised timeframe.

Had a problem with one delivery and contacted sis big thumbs up to Beth for sorting it out many thanks

Jonathan helped me with my requests and was very quick with follow up and reply and solved my issue. Thank you!

Great size. Easy to open and consume. Jelly like texture. Comes in great different flavours.

SiS are great , just a shame they are using Evri to deliver there orders.

Great product and standard delivery within a couple f days with tracking included.

Evri lost my parcel and SiS sent one out straight away. Brilliant service.

I now only buy my products direct with SIS, to ensure the best quality!

Chosen products suits my type of activity, good notification and delivery.

From service to delivery everything was amazing. Super fast

Top class customer service and products

Very happy with flavour and performance