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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Review summary
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Delivery was next day an products are outstanding. The only protein I’ve been able to digest within 10-15 minutes of training window without digestion issues. Would highly recommend this product for... See more
I’ve been using this product for years but first time I’ve ordered direct from the manufacturer. I am so impressed. The price was great. Next day delivery was fantastic with an hour allotted deliver... See more
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 direct... See more
Company details
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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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3.9
Great
223 reviews
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Banana and Strawberry gold standard…
Banana and Strawberry gold standard flavours tastes really nice. The powder mixes well with water.
Delivered to my door within 48 hours.
30 September 2026
May use AI-assist with repliesRead more
At Trustpilot, it's all about human content. This business can also access our AI-assisted response tool which helps them draft replies.
Fantastic product and arrived on time.
29 September 2026
Reply from Optimum Nutrition UK
Hi Ema,
We are glad you enjoyed your experience with the timely delivery of your item. Thank you for your positive feedback.
Taste lovely good product 💪
29 September 2026
Reply from Optimum Nutrition UK
Hi Nerijus,
We are glad you enjoyed your experience and we really appreciate your great feedback on the delicious flavor and quality of our product.
Reply from Optimum Nutrition UK
Hi Magnus,
We're glad you enjoyed your experience with our seamless order handling and top-quality items. Thank you so much for sharing your positive feedback with us!
Reply from Optimum Nutrition UK
Hi Val,
We are glad you enjoyed your experience with our fast shipping service. Thank you so much for your positive feedback.
Lost parcel now ignoring me
Lost parcel now ignoring me, their proof of delivery is some drivers feet, they proclaimed that it was received by myself even tho I was 15 miles away at work lol joke of a company please avoid
29 September 2026
Reply from Optimum Nutrition UK
Hi Martyn,
Thank you for your review. We're sorry to hear about your experience.
We can confirm that an investigation has been opened with our logistics partner regarding the delivery of your parcel. We can also see that our Customer Support team has been in contact with you and has provided updates.
Once the investigation has been completed, we'll be able to determine the appropriate resolution.
We hope this helps, and we're determined to resolving this for you.
Quite bad experience
Quite bad experience. Protein quality is bad. You cannot justify the exorbitant price for this
22 September 2026
Reply from Optimum Nutrition UK
Hi Chetan,
Thank you for your feedback. We're sorry to hear that you were disappointed with your experience.
We will share your feedback with our team, as customer input helps us improve.
We appreciate you giving our product a try and taking the time to leave a review.
Reply from Optimum Nutrition UK
Hi Prashanth,
Thank you for your wonderful feedback. We're glad to hear that your experience was positive.
We wish you a wonderful day ahead:)
Reply from Optimum Nutrition UK
Hi Dola,
Thank you for your wonderful feedback. We're glad to hear that your experience was positive.
We wish you a wonderful day ahead:)
Bought two products and can see the…
Bought two products and can see the difference - I am diagnosed with Parkinson's and the ON UK shakes are really helping me to retain my muscle mass and size
28 August 2026
Reply from Optimum Nutrition UK
Hi Anton,
We are happy to hear that our products are supporting your health journey. Thank you for sharing your positive experience with maintaining your strength.
Reply from Optimum Nutrition UK
Hi Melanie,
We are so glad to hear that you enjoyed our protein powder and appreciate your kind words about our communication!
Reply from Optimum Nutrition UK
Hi Milz,
We're so happy to hear you enjoyed our products and that the delivery was on schedule! We truly appreciate your kind words.
Lost my parcel and then stopped…
Lost my parcel and then stopped responding to customer service emails, whilst the phone contact wasn’t active
15 September 2026
Reply from Optimum Nutrition UK
Hi Aaron,
Thank you for your feedback, and bringing this matter to our attention.
We're happy to confirm, that our customer support team has now reached out to you, providing the proof of delivery and map stamp so that your package gets collected.
We truly apologize for the inconvenience caused, and we're here to ensure that your next delivery will be smoother:)
Tastes great mixes really well and most…
Tastes great mixes really well and most importantly keeps me full until late lunchtime, would definitely recommend ☺️
21 September 2026
Reply from Optimum Nutrition UK
Hi Diane,
We're so happy to hear our product keeps you full and satisfied! We appreciate you recommending it.
Reply from Optimum Nutrition UK
Hi Benny,
We're so happy to hear that ! Thank you for your wonderful feedback.
Reply from Optimum Nutrition UK
Hi Tilly,
We're so happy to hear you enjoy our drink so much! We truly appreciate your kind words and positive feedback.
Reply from Optimum Nutrition UK
Hi Regina,
Thank you for your feedback, and we would like to apologize for this experience.
We are happy that you managed to reach out to our customer suppport team and get assisted, and we're here to ensure that your next experience will be better:)
Thank you once again for your support!
Fast delivery
11 September 2026
Reply from Optimum Nutrition UK
Hi Jerald,
Your support means a lot to us, and we're grateful that you took the time to share your feedback.
check weight on tubes
Ordered 152 servings, initially received 136. Reached out and received another 15, but the total is still 1 short of what I paid for.
16 September 2026
Reply from Optimum Nutrition UK
Hi Thomas,
Thank you for reaching out, and we're sorry to hear about this issue.
To have this resolved for you, please contact our Customer Support team directly and provide your order details along with a brief explanation of the discrepancy.
We'll be happy to review the case and work with you to find a solution.
I had query regarding if its suitable…
I had query regarding if its suitable for halal and they replied in detail and told me which one are suitable.
16 September 2026
Reply from Optimum Nutrition UK
Hi Muhammad,
We're so glad we could assist you with your halal query in detail. We appreciate your positive feedback!
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