Optimum Nutrition35 reviews
This score is based on 35 genuine reviews submitted via BritainReviews since 2021.
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Find companies you have experience with and write reviews about them! Your reviews contribute to a more transparent market and improve the reliability of companies.Serious Mass supplement
After a good experience with the site before, I had a frustrating time buying the Serious Mass supplement recently. I used PayPal to order but got no confirmation. I tried again with no luck. Finally, I used my debit card and got a confirmation, but all three orders were charged to my account. I called the Ireland office but got no reply, just a recorded message about a meeting. I then contacted the Dutch office, who sent me to Germany where they said the orders had already been sent. The Irish office later apologised for the inconvenience but didn't explain why I couldn't reach them by phone. I asked for my issue to be raised, but haven't heard back. This whole thing showed me that the customer service and website functionality need a lot of improvement.
Optimum Nutrition Essential Amin.O. Energy | Orange | 270 g
I recently bought the Optimum Nutrition Essential Amin.O. Energy in orange flavour and unfortunately, it arrived damaged. The silica pouch had split, causing the product to clump up and be unusable. I contacted customer support with all the details and photos, but they haven't been much help. The team has been ignoring my messages and suggesting I still use the spoiled product. This is not great considering the product was nearly expired, with just 3 months left out of its 20-month shelf life. All in all, my experience with Optimum Nutrition has been really disappointing in terms of both support and product quality.
Protein Powder Purchase
I wanted to let you know about my recent experience with buying protein powder from your company. Unfortunately, I had some big problems with both the delivery and customer service. I spent £400 on my order, but it wasn't delivered properly – it was just left outside a block of flats and someone took it. Even though I showed Optimum Nutrition and FedEx that I'd lost the items, they told me I'd confirmed getting them. When I talked to a representative, they didn't really help me or give me good answers about what counts as a successful delivery or how my rights as a customer were being looked after.
Protein powder and pre-workout
I can't believe some of the negative comments about these products, they are simply the best! I have been using them for the past three years and would never consider switching to anything else. The website is super easy to navigate and ordering is a breeze. I love the email notifications that keep me updated on the status of my order, and the delivery is always on point. Optimum Nutrition truly goes above and beyond to provide top-notch service and quality products. I have never had to wait more than four days for my items to arrive. Keep up the fantastic work!
2x 100% whey protein double choc 2.27kg
100% whey protein in double chocolate flavour, 2.27 kilograms.
Whey protein purchase
I ordered a 2.5kg whey protein pack online, but when it arrived, it was the wrong brand of protein. The box was already opened and instead of protein it was filled with wheat flour. It's been a whole month now and I still haven't got my money back from this company. Their customer service hasn't been helpful at all - they keep asking for videos and photos but aren't offering a solution. I've tried calling their customer care number, sending emails, and even reaching out on WhatsApp but haven't received any response. I would strongly advise against making any purchases from this website.
Protein powder purchase
I bought some protein powder from here recently, and to be honest, I was pretty disappointed with the whole thing. The website said there was a special offer on bulk protein powder for €79.99, but when I went to buy it, the price shot up to €95.20. It definitely felt like they were trying to trick people with the false advertising. I nearly went ahead and paid the higher price without even realising. I reckon lots of other folks might have done the same. It's really irritating to think that some customers might have ended up paying more than they should have.
To make matters worse, when I tried to get in touch with customer service on Facebook about it, I didn't hear a peep back for over two weeks. The lack of communication and support is just so disappointing and not what you'd expect from a professional company.Optimum Nutrition Gold Standard Pre-Workout Advanced Blue Raspberry 420g
I bought the Optimum Nutrition Gold Standard Pre-Workout Advanced Blue Raspberry 420g recently and had a really bad time with it. The taste was so bad that me and a friend felt sick right after having it. I contacted customer service for help, but they said they couldn't assist me because I didn't buy it from their website. Even though, I won't buy from Optimum Nutrition again and think it's necessary to tell others about my experience to caution them.
Lost package, unresponsive customer service
I ordered some stuff recently and you won't believe what happened - my package ended up getting lost! Can you imagine? And when I reached out to customer service for help, they didn't even bother replying. It's really unprofessional, isn't it? Such a waste of both time and money. I wouldn't suggest this place to anyone, to be honest.
Serious Mass purchase
Hey everyone, I just got something from that protein shop at the gym that's supposed to help with getting big and all that. I used to really enjoy it because it tasted amazing, but they recently changed the formula and now it's just disgusting! Why would they do that? It used to be my favourite, now it's like taking yucky medicine. Can they please go back to the old recipe? Pretty please?
Whey protein
I recently bought a tub of whey protein from your website to top up my gym supplies. But, I've got to say, my experience with Optimum Nutrition was far from satisfactory. The product came all the way from the Netherlands to the UK, which wasn't a big deal, but what happened next was really disappointing.
I had to wait longer than expected, only to find out that my parcel had supposedly been delivered to a pick-up spot at a Tesco store. When I went to the store to pick it up, the staff told me that it had already been sent back to the depot. The lack of coordination and communication on their part is just not on.
I tried to sort things out by getting in touch with customer support, but they were not very helpful. They flat out refused to give me a refund, saying that the parcel had been delivered just fine. But where's the proof of that? Who signed for it at Tesco? This lack of transparency and accountability is worrying.
It's pretty obvious that customer satisfaction isn't a priority for Optimum Nutrition, given their lack of empathy and willingness to sort things out in a friendly way.Protein powder order
I bought some protein powder from your company not long ago. However, I've had a bit of a problem with getting it delivered. It's been 3 weeks and still no sign of my order or a refund. I've tried to get in touch with customer service multiple times, but I keep talking to the same unhelpful person who can't seem to fix things. This lack of communication and slow process has really annoyed me. Honestly, I wouldn't recommend this company to anyone because of these problems.
Protein powder
I'm really not happy with the service I got from Optimum Nutrition as a customer. I bought some protein powder but my order still hasn't been delivered. It's showing as being sent back to the sender, which is really annoying. I wish I had looked into the company's reputation before buying from them. It's worrying that a well-known company like this can't get orders sorted out quickly and properly. I hope they can sort this out soon.
4KG protein isolate purchased
I bought 4KG of protein isolate from this company not long ago and I must say, their customer service was shocking. They gave me a tracking number that turned out to be non-existent. When I tried to get help by emailing their customer service, I got no response at all. The lack of communication and inability to give correct tracking details left me feeling really annoyed and let down. I'd advise anyone thinking of buying from them to do some research first.
Great tasting protein
A major problem I had with other protein products I have tried is their taste. It often feels like torture taking some of them. I bumped into reviews of Optimum Nutrition protein products and got attracted when I read that their products had a great taste. I decided to give them a try with an order of French Vanilla and Milk Chocolate. The product arrived within 1 week after my order. I was also very impressed with the taste of their protein products and have since stuck to them. I was also lucky to get a discount of 15 per cent when I made my order.
About Optimum Nutrition
Every athlete understands the importance of a proper diet in their training. An improper diet not only reduces and sometimes defeats the efforts made in training, but it could also put the athlete at risk of health complications. Therefore, all athletes not only regulate what they eat, but they also take supplements to make up for whatever nutrients they might lack. And when it comes to energy, nothing provides more than a good protein supplement. Optimum Nutrition asserts that they have what athletes need for their protein requirements. However, most athletes are very conscious of what they put into their bodies and may be wary of trying any new product. Therefore, reading honest customer reviews of Optimum Nutrition from individuals who have tried the protein supplements the company offers would be prudent.
About Optimum Nutrition
Optimum Nutrition is a company that claims to be well-known for producing and retailing a wide variety of protein-rich supplements, all targeted towards athletes. With over 30 years in the industry of providing protein supplements for athletes, Optimum Nutrition asserts that many professional athletes and gyms trust the quality of their products. They claim to reach out to more than 2 billion athletes worldwide, ensuring that all their products are made under strict quality control standards using natural ingredients created by Mother Nature. Their products are also tested before being released to customers.
Products and Services of Optimum Nutrition
Fitness-conscious individuals and athletes can find a range of products at Optimum Nutrition, including protein shakes, protein powders, protein snacks, energy supplements, pre-workout supplements, weight gain supplements, vitamins, muscle-building, and endurance supplements. Some of their popular protein shakes and powders include Gold Standard Whey, Gold Standard Plant, Gold Standard Casein, and Platinum Hydrowhey. They also offer protein snacks like Cake Bites, Protein Crisp, Protein Wafers, and Protein Almonds. Their energy products include both powders and energy drinks, such as Essential Amin.O. Energy and Essential Amin.O. Energy + Electrolytes. For pre-workout energy supplements, they have Gold Standard Pre-workout and Gold Standard Pre Advanced. Optimum Nutrition also offers weight gain supplements like Pro Gainer and Serious Mass, as well as a variety of vitamins, health, and wellness supplements.
Compliments, complaints, and tips for Optimum Nutrition
Have you tried the protein supplements from Optimum Nutrition? How do they compare to other protein supplements you've tried? Would you recommend Optimum Nutrition to other athletes? Please share an honest review of your experience with Optimum Nutrition, including any tips that could help the company improve their products and services for a better customer experience. Your feedback is valuable.
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Diet and Health | Vitamins & Supplements Reviews & Experiences
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Last update: January 2026
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Review with most votes
Great tasting protein
A major problem I had with other protein products I have tried is their taste. It often feels like torture taking some of them. I bumped into reviews of Optimum Nutrition protei... Read onBy: Brownlow Lindon