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Optimum Nutrition UK Reviews 

192
•
TrustScore 4 out of 5

3.9

Vitamin and Supplements Store
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Review summary

Created with AI, based on recent reviews

Evaluating 182 reviews, reviewers had a great experience with this company. People love the protein products, offering delicious flavors, smooth mixability, and top-tier quality that consistently supports their daily fitness and recovery goals. Consumers frequently share that the delivery service is exceptionally fast, ensuring orders arrive safely and right on schedule. However, some people mentioned frustrating experiences with missing orders and unhelpful customer support teams that failed to resolve issues. Reviewers also noted occasional problems with damaged packages, broken seals, or items arriving in a less than desirable condition. These individuals felt disappointed by the lack of timely updates and difficulty getting proper refunds.

What people talk about most

Product

Customers consistently note positive experiences with product, frequently highlighting great taste, excellent... See more

Quality

Users describe positive interactions with quality, noting that the items deliver great results and... See more

Delivery service

Reviewers mention positive feedback about delivery service, noting that orders consistently arrive quickly,... See more

Order

Customers had ambiguous experiences with order processing, with many reviewers praising the straightforward... See more

Customer service

Consumers find customer service to be mixed, with some reporting that friendly staff are very happy to help... See more

Reviews shaping this summary

Rated 4 out of 5 stars

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

Rated 5 out of 5 stars

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

Rated 5 out of 5 stars

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

Rated 5 out of 5 stars

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

  1. Vitamin and Supplements Store
  2. also in
  3. Fitness and Nutrition Service
  4. Sports Nutrition Store

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

3.9

Great

TrustScore 4 out of 5

192 reviews

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3.9

All reviews

(192)

192 reviews in the last 12 months

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Rated 3 out of 5 stars

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.

September 16, 2026
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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.

Rated 5 out of 5 stars

One of the best nutritions brands in the business

As someone who’s trying to put on a bit of size, previously I struggled to get the calories and protein in and the best way to supplement with protein shakes and protein bars. The pre-made protein shakes, really do make a difference to get in the additional protein and I would recommend them. The brand itself is great quality the and I’ve never had issues with delivery or service.

September 14, 2026
Rated 1 out of 5 stars

So expensive product quality not good…

So expensive product quality not good like before

September 3, 2026
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Reply from Optimum Nutrition UK

Hi Maninder,

Thank you for your feedback.

We take your comments seriously and will share your feedback with our team.

We appreciate your long-term support and hope to serve you better in the future.

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