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
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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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4.0
Great
130 reviews
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Best protein powder around
Great service and product. Ordered late afternoon and got it next day
Quality of product is great and mixes really well.
Good job!
14 January 2026
Unprompted review
They are the best
14 January 2026
Unprompted review
I have not received my order
I have not received my order.
A glitch in the system meant it was delivered to the wrong address (a previous address) however my PayPal whicbinised to pay has only got my new address so not sure how their system picked that up and now I am down a large sum of money £64 with no product to show for it.
So sadly not great.
For reference Apparently this is still being investigated but I ordered on the 29th December.
29 December 2025
Unprompted review
Reply from Optimum Nutrition UK
Hello Tamara,
We’re very sorry to hear that you haven’t received your order. After reviewing the details, we can confirm that the delivery address entered during checkout matches the address linked to your PayPal account.
Our courier has confirmed that the parcel was delivered to this address. As this is now not your current residence, we kindly recommend reaching out to the current occupants to see if they can assist in retrieving the parcel.
We truly understand how frustrating this situation is, and we’re sorry for any inconvenience caused.
Unfortunately, as the order was delivered to the address provided at the time of purchase, we’re unable to take further action from our side.
Wishing you a wonderful day ahead, and a prompt resolution!
Best protein in UK
Delivered next day, and always the best quality.
More expensive than the rest but its so good. Never causes issues with my stomach, and mixes so easily.
10 January 2026
Unprompted review
Chocolate is the best
Delivery was very quick. I bought it in the black friday sale so decent value for Money.
I went with 2 different chocolate options. Previously I had the vanilla ice cream flavour which I found sickly sweet after a few weeks.
I'd like to try other flavours but I'm commitment shy.
1 December 2025
Unprompted review
I don’t usually leave reviews BUT
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 stomach worse than ON whey, which I wouldn’t expect due to having less lactose. Mixes perfect, banana is my favourite flavour. Little expensive but can always find discounts etc.
13 January 2026
Unprompted review
I must said this product i strongly…
I must said this product i strongly recommend every week i need to make a new hole to my belt , i loosing my belly, feeling full , give strenght in the gym , absolutely 10/10 and before my protein and pum is finish i will order new one , also delivery take only 2 day no drama and you can track
13 January 2026
Unprompted review
Great flavour
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 session and taking the drink has made a big difference, no more aches & pains.
Would recommend over other brands.
12 January 2026
Unprompted review
Excellent service and good pricing…
Excellent service and good pricing online direct compared to Amazon/Boots etc. Taste was excellent (according to my son) and it mixes well. Quick delivery too.
12 December 2025
Unprompted review
Amino 2222 Lives By Its Name, Superior
I have been using Amino 2222 Superior for the last several years and it lives by its name! It is Superior to any other Amino Acids product i have used before.
Bob
30 December 2025
Unprompted review
Creatine Monohydrate TOP
Creatine Monohydrate TOP! As always From this brand!!! 100% excellent
1 December 2025
Unprompted review
Resolved Eventually, but Poor Communication
Update : Optimum Nutrition has now responded and issued a refund. However, this response came after nearly a month of silence and only after the issue was escalated publicly.
While the refund resolves the payment, the delay in addressing a food quality and safety concern is disappointing. Customers should not have to rely on public reviews to receive basic support or clarification about whether a product is safe to consume.
I ordered Protein Isolate directly from Optimum Nutrition website uk (Order #ON272682). The product I received had visible lumps, which immediately raised concerns about moisture exposure and product safety.
I contacted customer support and was asked to share photos, which I did promptly. Since then, there has been no response at all, despite multiple follow-up emails over more than a week.
This is not just a service issue — it’s a product safety and quality concern. Until confirmed safe, the product cannot be consumed, and the lack of communication is unacceptable from such a reputed brand.
Very disappointed with the after-sales support. I expected much better accountability and professionalism.
10 December 2025
Unprompted review
Reply from Optimum Nutrition UK
Thank you for contacting us and sharing your concerns. We sincerely apologize for the inconvenience caused.
To investigate this properly and escalate the matter, we kindly ask you to contact our customer service.
Once we receive these details, we’ll be able to advise you further and take the necessary steps to resolve this for you.
We appreciate your cooperation and look forward to assisting you promptly.
Best products available
16 December 2025
Unprompted review
Exemplary customer service
Can't fault the product, nor the service. Prompt delivery and an issue resolved quickly, without fuss and to a level of service that made me take note - in a good way.
Won't hesitate to buy directly from now on. A standout example of customer service and a very happy customer
3 December 2025
Unprompted review
I ordered last week and the order was…
I ordered last week and the order was delivered within a few days. Love the elite range, as I am subjected to testing procedures.
15 December 2025
Unprompted review
Top product and discount
Top product and discount. Delivery quicker than Amazon at this time of the year as well 👍
10 December 2025
Unprompted review
Flavour 2/10
Flavour 2/10. Doesn’t mix well with water or milk. Have to blend for smooth taste. They don’t do refunds. A LOT of money wasted. Won’t be buying from them again. Product smells like raw chicken.
30 November 2025
Unprompted review
Reply from Optimum Nutrition UK
Thank you for sharing your honest feedback. We’re sorry to hear that you were disappointed with the product and that it didn’t meet your expectations in terms of taste, smell, and mixability.
Taste perception can vary from person to person, however concerns about smell or product quality are something we take very seriously. We would appreciate the opportunity to review this further and clarify the situation with you.
If you haven’t already, please contact our customer service team directly and provide your order number and the batch number printed on the product. This will allow us to investigate the matter properly and see how we can support you.
We regret that your experience was not a positive one and thank you for taking the time to share your feedback, as it helps us improve.
Kind regards
Tastes like actually chocolate milk…
Tastes like actually chocolate milk which other brands lack!
4 December 2025
Unprompted review
Horrible
Horrible, never got my package, cant reach out and doesnt answer on Facebook, will n’y on Amazon next time
13 November 2025
Unprompted review
Reply from Optimum Nutrition UK
We’re very sorry to hear about your experience and understand how frustrating it is when a package doesn’t arrive and you feel unable to reach us.
Please be assured that our customer service team is happy to look into your case and support you. We kindly ask you to contact us directly via our official support channel and include your order number so we can investigate the issue as quickly as possible.
We sincerely apologize for the inconvenience and would appreciate the opportunity to resolve this matter for you.
Kind regards
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