Just bought the new clear protein (incentivised by the free creatine). Good change from whey with a nice clean taste. Originally looking to buy Gold Standard but at nearly £100 a tub that was a no go.... See more
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I don’t usually leave reviews. However, from someone who has constant gut issues, this is the only whey I’ve found (so far) which is the easiest on my stomach. Even whey isolate from USN etc hits my s... See more
Super fast delivery, next day now! Products are great, lots of choices and flavours to choose from. From a leading nutrition and performance brand, I wouldn’t expect anything else, that’s why I don’t... See more
Great flavour, mixes well without leaving any lumps like some other brands. I find that going a little bit bigger on the scoop size adds to the consistency and flavour. Morning after a heavy sessio... See more
Company details
Written by the company
Optimum Nutrition. Setting the Gold Standard in Sports Nutrition. For more than 35 years, Optimum Nutrition has been dedicated to providing athletes, fitness enthusiasts, and active individuals with the highest quality sports nutrition products in the world. Recognised globally as The World’s #1 Sports Nutrition Brand, Optimum Nutrition is trusted by millions of customers who strive every day to achieve their health and fitness goals. Our philosophy is simple: quality you can trust, products you can rely on, and results that help you perform at your best. From our state-of-the-art production facilities, we control every stage of the manufacturing process — from sourcing premium raw ingredients to rigorous quality testing — ensuring that every product meets our uncompromising standards. Best known for Gold Standard 100% Whey, the world’s best-selling whey protein powder, we also offer a wide range of products to support performance, recovery, endurance, and everyday wellbeing. Whether it’s protein powders, pre-workouts, creatine, or vitamins and minerals, each supplement is formulated with science, innovation, and the needs of active people at the forefront. At Optimum Nutrition, we are proud to support both professional athletes and everyday consumers. Our mission is to empower everyone to unlock their potential through safe, effective, and great-tasting nutrition. We continually invest in research, education, and innovation to ensure we remain at the forefront of sports nutrition. When you choose Optimum Nutrition, you choose the Gold Standard in quality, trust, and performance.
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3.9
Great
125 reviews
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Don't seem to understand the difference between a customer and a supplier
My order was delivered by DPD not to my door as instructed but to the building hallway in central London, where it was naturally immediately stolen. Instead of doing what every single other vendor would have done in this scenario which was to either offer a refund or a replacement, and sort out the delivery problem with DPD, Optimum Nutrition decided to involve me in some convoluted back-office process where my money was held hostage and I had to return documents to take part in some kind of DPD investigation. Despite multiple escalations over a number of weeks the customer service team displayed no understanding of how e-commerce works, nor the difference between a supplier claim which is frankly not my problem and a customer who has done no wrong. I had to involve my credit card company in the end who pushed for a refund on my behalf. After which Optimum Nutrition still had the gall to email me to ask me to withdraw my claim with the credit card company. Truly a surreal experience. A real shame as the product is good - just seem to have no understanding of customer experience.
June 4, 2026
Unprompted review
May use AI-assist with repliesRead more
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Can’t recommend anybody
One of two shakers I bought broke after just one usage. The latch had shifted off-centre, so it got noticeably crooked. Tried to get a response from support but nobody answered
July 7, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Boris,
Thank you for your feedback.
We're very sorry to hear about your experience and apologize for the delay in responding to your enquiry.
After reviewing the matter, we can confirm that the issue has now been resolved by our Customer Support Team.
We appreciate your patience while the matter was being addressed and thank you for bringing it to our attention.
Delayed delivery
I ordered Protein on 21 July with wrong address delivery. Moments after purchase I realised address is wrong. Emailed customer support as they not available via phone. They reassured my parcel will be delivered to correct address but until today 27 July I haven’t received my parcel and DPD mailed me my parcel would be delivered tomorrow in wrong address 😑
July 21, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Majid,
Thank you for your feedback.
We're sorry to hear about your experience and understand how frustrating this situation must have been.
After reviewing your case, we can confirm that you contacted our Customer Support Team regarding the incorrect delivery address. The matter was investigated and has since been resolved, with a replacement order sent to the correct address.
We apologize for the inconvenience caused and appreciate your patience while we worked to resolve the issue.
So I purchased the chocolate brownie…
So I purchased the chocolate brownie bar which I have previously purchased as a single pack and they are delicious. In addition to this I got the chocolate protein shakes, which again were delicious providing the additional necessary protein in easy to consume products. The products were delivered within the timeframe mentioned and I will definitely be purchasing these products again and would definitely recommend other people to purchase. Life is short and most people don’t have the time to get all their protein in, especially when you’re bulking and the products offered by this company always help.
July 22, 2026
Unprompted review
Item arrived open
Item arrived open, contacted customer services on 16th July and the response is not solving the problem. I want to RETURN for a replacement or refund, they are avoiding this. Will never order again and will just change to a different brand of product. Will be contacting my credit card provider for a chargeback
July 16, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi,
Thank you for your feedback.
We're very sorry to hear that your product arrived open and that you feel your concern has not been resolved satisfactorily.
Unfortunately, the information provided in your review does not allow us to identify your order or previous correspondence. We would therefore kindly ask that you contact our Customer Support Team again, quoting your order number and providing any relevant details so that we can review the matter fully and assist you further.
We sincerely apologize for the frustration this has caused and would appreciate the opportunity to investigate your case and work towards a resolution.
Excellent Products & First-Class Service
I’ve ordered from Optimum Nutrition UK several times now, and every experience has been excellent. The website is easy to navigate, ordering is straightforward, and delivery has always been quick and reliable.
The products are consistently high quality, and it’s reassuring to know you’re buying directly from the manufacturer. I also appreciate the regular offers and discounts, which make premium supplements even better value.
Overall, a company I trust for my sports nutrition needs, and one I’ll continue to buy from. Highly recommended.
July 18, 2026
Unprompted review
Brilliant product...great taste and…
Brilliant product...great taste and super effective
July 16, 2026
Unprompted review
I just love it!
July 15, 2026
Unprompted review
Did we even needed to ask for 5 stars i…
Did we even needed to ask for 5 stars i mean its ON, just a bit pricey but you pay premium to get premium anyway.
July 8, 2026
Unprompted review
Efficient response and quick delivery
Efficient response with good communication , and rapid delivery.
July 9, 2026
Unprompted review
Sad but true - no,longer value for money
Just bought the new clear protein (incentivised by the free creatine). Good change from whey with a nice clean taste. Originally looking to buy Gold Standard but at nearly £100 a tub that was a no go. Sadly after nearly 20 years I am now having to explore other protein powders.
July 1, 2026
Unprompted review
Product still not delivered yet its…
Product still not delivered yet its more than a week now
July 9, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Swaroop,
Thank you for your feedback.
We're sorry to hear that your order has not yet been delivered.
Unfortunately, we are unable to locate your order based on the information provided in your review.
Please contact our Customer Support Team directly with your order number so that we can investigate the shipment and assist you further.
We look forward to helping you resolve this matter as quickly as possible.
Good quality and mixes really well
Good quality and mixes really well. Nice taste
July 7, 2026
Unprompted review
Excellent delivery service and…
Excellent delivery service and delicious product
June 29, 2026
Unprompted review
Normal procedure and amazing quality…
Normal procedure and amazing quality product.
June 2, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Jose,
Thank you for your kind feedback!
We're delighted to hear that everything met your expectations and that you're enjoying the quality of the product.
We truly appreciate your support and look forward to serving you again in the future.
Reply from Optimum Nutrition UK
Hi Rene,
Thank you for reaching out to us, and letting us know about your positive experience.
We're always here for you:)
Reply from Optimum Nutrition UK
Hi Hugo,
Thank you for your wonderful feedback.
Wish you a wonderful day ahead:)
Always good quality products
Always good quality products; promptly delivered.
June 1, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Craig,
Thank you for your lovely feedback- we truly appreciate it:)
We're always here for you!
Didn’t receive my order!
Didn’t receive my order!! Emailed but no reply!!
June 11, 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Vincent,
Thank you for reaching out, and we truly apologize for the inconvenience.
Our customer has already reviewed your email, and have reached out to you to provide a resolution. Could you kindly have a look, and get back to them so that they can get this sorted out for you?
We're always here if you need further assistance, and we wish you a wonderful day ahead.
Reply from Optimum Nutrition UK
Hello Viorica,
Thank you for your kind words. We're glad to hear, that you have a positive experience with us.
We're always here for you!
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