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
Company replied
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
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.
Contact info
4.0
Great
129 reviews
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 90% of negative reviews
Typically replies within 2 weeks
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Optimum Nutrition was 5 stars order…
Optimum Nutrition was 5 stars order tracked, arrived when said and correct, but the delivery firm was awful, left package outside front door in full view of passers by, when behind back gate was stated as drop of place, lucky to be still there when I returned, won't be ordering again as not worth hassle if it went missing. Change your delivery firm and will be used again.
6 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Warren,
Thank you for sharing your experience, and we’re truly sorry about the way your parcel was delivered.
When we provide the tracking link, the courier’s app sometimes restricts delivery to safe places or neighbours — many customers prefer this option, but in your case it clearly didn’t work as intended. We’re glad the package was still there, and we’ll escalate this with the courier so it doesn’t happen again.
We're always here for you when you need assistance:)
Delivery and production on high quality
Delivery and production on high quality
29 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Jakub,
Thank you for sharing your kind words with us.
We're always here for you.
Almost impossible to get in touch
Something went wrong when l placed the order l guess "auto fill" put in half post code wrong. That's not ON fault still COULD NOT CALL them, Return email say "not monitored" it gives options for other emails to use of which the Eu one is incorrect! ("server not found") .. Three days later l found them on fb they answered me "a couple of days later.. THANKS GOD FOR THE DELIVERY-MAN Out of the lot (DPD clerks included say we can't change any of tge address must be done by the sender EVEN IF THAT post code was NON existing)) He was the only one who took it on himself look at "safe space" where l put the right post code and deliver.
5 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Corrado,
I’m really sorry you had to go through all of that.
Unfortunately, our phone line is not currently in use, and it looks like there was a technical issue with the email inbox you tried to reach. That problem has now been fixed, but it absolutely should not have happened in the first place.
We’re here for you if you ever need support again — you can always reach us directly through customer support.
The best protein supplement out there
The best protein supplement out there. Total value for money.
5 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Prasanna,
Thank you so much for the kind words.
We're always here for you:)
Hands down the best protein I have ever…
Hands down the best protein I have ever had. The flavor is incredible and it mixes perfectly without any clumping. I’ve finally found my go-to supplement and will definitely be purchasing again. Huge thanks to the team for a top-tier product!
6 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Jess,
Thank you so much for the amazing feedback.
Enjoy every scoop!
I paid it said dispatched and nothing…
I paid it said dispatched and nothing arrived.
4 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Ian,
Thank you for taking the time to leave your feedback, and I’m truly sorry to hear about your experience with the delivery.
I’ve checked our records and can see that you already reached out to our customer service team, and a resolution has been provided. I’m glad you were able to get support, and we sincerely apologize for the inconvenience you faced along the way.
We're always here to help:)
Great whey protein
I bought strawberry flavor and i’d say best whey you can get in both terms of quality and taste
16 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Mohsen,
Thank you so much for you kind words.
We are truly happy to hear, that you had a positive experience with us:)
Really good taste double chocolat whey…
Really good taste double chocolat whey protein powder
1 May 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Kilian,
Thank you so much for your feedback. We're glad to hear that you are enjoying the product.
We hope to see you soon:)
I have not receive the product or the…
I have not receive the product or the refund
21 April 2026
Unprompted review
Best tasting protein powder
I’ve tried a few different protein powders but this is without doubt the best tasting one, might be a little bit pricey but more than makes up for it with the unreal taste, Delivery was super quick as well, will definitely be using these from now on.
24 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Wayne,
Thank you for your wonderful feedback. We're really glad to hear, that you had a positive experience with us.
Wishing you all the best, and we hope to see you back soon:)
I didn’t receive the product and can’t…
I didn’t receive the product and can’t contact ON at all. Tried several times, trough phone calls, email, instagram, can’t manage to get a reply.
Had to open a regou d request with my bank!
The tracking id provided for DPD is an old id, to a delivery done in Nov-25. My order was placed in 08 April-26. DPD said there is nothing they can do.
I haven’t had an update since the first email confirming the order.
Had to buy the same product from Amazon to manage to get the product, it arrived the same day.
Now I’m waiting on the bank analysis to get my money back, with all evidence provided that I’ve tried contact with ON multiple times.
8 April 2026
Unprompted review
The product and ON service was good but…
The product and ON service was good but the delivery wasn’t the best. The 2 protein tubs were simply put in a cardboard box with no protection. They arrived squashed and dented but luckily there was no leakages
15 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Vimal,
Thank you for sharing your feedback.
We’ll escalate this to our logistics partner so they can review the packaging process and prevent this from happening again.
If something like this ever happens or if you need assistance with a damaged item, please don’t hesitate to reach out directly to our customer support team. They’re here to help you quickly whenever an issue arises.
Reply from Optimum Nutrition UK
Hi Montis,
Thank you for your wonderful feedback. We're so glad you enjoy the products.
See you soon:)
I didn't receive my order still
17 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello,
Thank you for reaching out and we’re really sorry to hear about this.
We’ve checked the tracking on our side, and it does show that the package has already been delivered. If you’re experiencing any issues or if the parcel hasn’t reached you, could you please get in touch with our customer support team? They’ll be able to look into this further and help resolve it quickly.
We’re here to support you every step of the way.
Damaged pack
Hi - thanks for the delivery on time . But the parcel I got is damaged and protein pack is torn - with protein contaminated as got contact with air. Could u please look into it.
Thanks
12 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Mohit,
We’re really sorry to hear that your parcel arrived damaged.
We’re happy to see that you’ve already been in touch with our customer support team and that a brand‑new replacement order has been arranged for you as agreed. We hope this quickly puts things right and that you enjoy your products once they arrive.
If there’s anything else you need, we’re always here to help.
Good products and timely delivery
25 March 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Cosette,
Thank you for sharing your lovely feedback with us.
We're always here to support you.
Love this protein powder so nice mixed…
Love this protein powder so nice mixed with Greek yogurt especially Strawberry!
11 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Pablo,
That's so wonderful to hear.
We truly appreciate your feedback:)
Reply from Optimum Nutrition UK
Hi Arvin,
Thank you for your feedback, and we're glad to hear about your positive experience with us:)
Poor product quality, Shaker Bottle logos came off affter two handwashes in cold water...Spend your money elsewhere. Tried to support them as a brand but don't bother.
Bought a couple of their shaker bottles. After a couple of cold hand washes (not dishwasher), the logos on the side started coming off. Should've just bought no brand versions and saved me 80% of what I spent. If I had known their products were of such poor quality, I could've spent much less on generic no-brand shaker bottles. Tried to support them as a brand but that's my fault...
When they finally did get back to me, they said they couldn't help me because i didn't purchase from their website and asked me to contact their third party complaints team to provide them with all these details?!
-Place of purchase
-Date of purchase
-Product name
-Batch number and time stamp (preferably photo of the batch)
-Expiration date
-Summary of complaint
-Photo of the complaint
It's a lot of work to justify why their bottle is poorly made. So in short, no I won't be spending more time chasing nothing and just won't be purchasing from them again.
Spend your hard earned money elsewhere.
7 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hi Drew,
We’re really sorry to hear about your experience — that’s genuinely frustrating, and we completely understand why you’re disappointed.
Regarding the support process: because the purchase wasn’t made through our website, we’re required to follow a specific procedure so our quality team can properly investigate. We know it can feel like a lot to provide, and we’re sorry it came across as extra work on your end.
Your feedback is absolutely valid, and we’ll use it to improve both our product quality and the way we handle cases like this.
Wishing you a wonderful day ahead.
Very bad!
Very bad!! The protein powder was all over the box and the packaging of the product was compromised
4 April 2026
Unprompted review
Reply from Optimum Nutrition UK
Hello Niranjan,
We’re really sorry to hear about your experience — this absolutely shouldn’t happen. We can see that you’ve already reached out to our customer support team, and one of our agents has provided a resolution for you. We truly hope this helps and that we can offer you a much better experience next time.
Thank you for bringing this to our attention.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.