Optimum Nutrition Reviews 

179
TrustScore 2 out of 5

1.9

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Rated 1 out of 5 stars

I order 2 * 5kg bags of protein and one of them arrived damaged with a large split down the side of the bag spilling the contents into the delivery box. After 3 weeks of emailing ON customer services... See more

Rated 5 out of 5 stars

I have been ordering from ON since Jan 2026 since Amazon is restricting the amounts. This time when I ordered, UPS lost a case, I filed a claim with UPS, but was frustrated after not being able to re... See more

Rated 1 out of 5 stars

I've ordered one 5kg bag of protein powder, and after almost two weeks it hasn't arrived. I've sent an email as well with no response so far.

Rated 1 out of 5 stars

Company which pushed their product through subscription which cant be canceled. When you try it this message "Your subscription contract is frozen by your shop owner." interrupt the process. Highly re... See more

Company details

  1. Beauty & Well-being

Information provided by various external sources

Optimum Nutrition: Creators of 100% Whey Protein (The Worlds #1 Protein Powder), Pro Complex, Diet Products, Strength and Recovery Supplements, and other health and nutrition products.


Contact info

1.9

Poor

TrustScore 2 out of 5

179 reviews

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1-star

No recent history of asking for reviews

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Replied to 8% of negative reviews

Typically replies within 1 week

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1.9

All reviews

(179)

30 reviews in the last 12 months

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Rated 5 out of 5 stars

First class service as always 😊

These negative comments are unbelievable lol. Been using Optimum Nutrition Gold Standard whey protein, and pre workout for past three years. Would never think of using anything else. As quite simply they are the best. There website is well layed out, and so straightforward to order. Email notifications are sent as soon as my order is placed. And again when my items are posted. Tracking and delivery is first class too. Never yet waited more than four days for my products. Keep up the great work Optimum nutrition. If it wasn't for your great products, I wouldn't be in the brilliant shape I am now. 😊👏🏽👏🏽👏🏽

22 May 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you so much for the review! Glad to hear you have always had a good experience with us and that our product contributed to your goals. We really appreciate it :) Hope to see you again soon! Team Optimum Nutrition

Rated 5 out of 5 stars

No problems, just another online purchase.

Ordered on the 20th Apr, 2x 100% whey protein double choc 2.27kg. Got tracking from FedEx cross border, items being sent from NL and another tracking from Evri who would deliver rest of the way once in the UK.
Received items today 25th Apr, packaged well and both tubs inside had outer and inner seals intact. My experience was 10/10 and I will order again if the prices are still good.

25 April 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for the feedback! Very great to hear you had a good experience with us and the delivery service. We are looking forward for your next order :) Team Optimum Nutrition

Rated 1 out of 5 stars

Order never arrived - customer service awful

Order never arrived and had little to no communication. Thankfully Klarna will investigate. Shocking as I've used the products a long time. Pretty disappointed, would never order again.

25 April 2023
Unprompted review
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Reply from Optimum Nutrition

Hi there, I'm sorry to hear about this poor experience! Could you please contact our customer service team if your issue has still yet to be resolved or you have further issues?

Rated 1 out of 5 stars

I don’t recommend due to collaboration…

I don’t recommend due to collaboration with Patryk2703. He sells your products on Amazon. Nutrition company Solgar Poland already withdrew the contract with him

8 April 2023
Unprompted review
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Reply from Optimum Nutrition

We’re sorry to hear that. Thanks for getting in touch and providing this feedback. The person you have mentioned has no official relationship with Optimum Nutrition.

Rated 1 out of 5 stars

No option to cancel & no 'code not valid' error

This company does it's best to mislead people. I applied a code for 20% off and got a message saying that the code was accepted. I clicked "Review & pay" but instead of being able to review, and see that the code was not applied, it just placed the order. There is no option to cancel an order even if u create an account. There is some small print that says you can cancel by telephone but only within 10 minutes of the order. I tried but they don't answer the fone.
I emailed twice, many hours before the item was dispatched but that apparently isn't good enough. Customer service wasn't available on the weekend.
An email from the company just says I can refuse delivery but I'm pretty sure they'll find a way to keep my money if I do that.
I've asked for details of how to return but I'm sure they'll make that difficult too.
Very shoddy service for such a big company.
The ON Gold standard protein in French Vanilla is the best I've found so it's a shame the website and process lets them down.
The product is available £20 cheaper in a local store so I'll stay off the website in future!

19 March 2023
Unprompted review
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Reply from Optimum Nutrition

Hi there, we're really sorry to hear about this poor experience! If you are still experiencing issues with this order please get back in touch with our Customer Service so we can try to make this a better customer experience!

Rated 5 out of 5 stars

Not sure what all the negative reviews are about

Not sure what all the negative reviews are about personally.

Ordered directly for some whey protein and pre workout (I usually get it from the gym but they were out of stock on the flavour I like)

I ordered while half asleep in the morning before work and got the wrong flavour, so I rang them and Shan was very helpful and refunded me straight away and also kindly sent me the 15% off code I initially used so I could order again.

No issues at all, ordered again and it's being delivered through DHL and not evri...

Honestly they probably get hundreds of orders per week and seems like only a few have had issues with their orders, and in my experience the customer service was great.

Will definitely be ordering from them again. The only downside is that the price of the protein is a little high, but most proteins are these days.

3 March 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you so much for your review and the feedback! We are very glad to hear you are satisfied with your order and also our service. It is nice to hear the order and the delivery was succesful. We are happy to hear you are ordering with us again and looking forward to it. Hope to see you soon again!
Kind regards,
Team Optimum Nutrition

Rated 1 out of 5 stars

Avoid like the plague

Avoid. Surprised a leading brand like this could be so shoddy. I've never had to raise a credit card dispute before but they simply ignore emails and tweets for non-delivery. They also use Evri which means there's more than a chance your order won't turn up. Terrible experience all round.

24 January 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for the feedback! We are very sorry to hear your order was not delivered. A postal investigation was started which took a little longer than expected. Unfortunately, your order was delcared lost. We are very sorry for the inconvenience since this is not the service we would like to provide. We will file a complaint with Evir. Also, in the mean time, the purchase amount was refunded. You have had contact with the customer service and we hope you are satisfied with the solution. If not, please let us know.
Kind regards, Team Optimum Nutrition

Rated 1 out of 5 stars

Misleading/Mediocre website, Poor Customer Support

Order Nr ONUK71470834
Ordered a present for my nephew for 127gbp. There was a promotion going for a free backpack. They also basically forced me to use a welcome discount code. Their mediocre website accepted 2 of those codes without any error or notification. i intentionally set up my order in order to receive a backpack. So i thought everything is all right and we were waiting for the package to arrive to the UK from their storage in NL. Little did i know that a welcome discount code and the minimum order amount code for the backpack are not stackable.(makes sense? no). To sum up, me and my nephew are disappointed.
Also i had to use VPN, otherwise, the website always showed an error. (great start for shopping).
SUBTOTAL: £ 146.97
DISCOUNT: £ 19.95
SHIPPING COSTS: £ 0.00
TAX: £ 21.17
TOTAL: £ 127.02

6 February 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for the review and sorry to hear you are not satisfied with your order. Indeed two codes were used for the order. These two codes are not stackable, which means that you cannot have the newsletter discount as well as receiving the backpack, we are sorry for the misunderstanding. You can always find the terms and conditions for our current promotions here https://www.optimumnutrition.com/en-gb/ON-T&C-promo or contact us to provide you with more information on the codes.
We hope you understand and that you are satisfied with the rest of the order.
Kind regards,
Team Optimum Nutrition

Rated 1 out of 5 stars

Why did I not check reviews before I…

Why did I not check reviews before I ordered still waiting for delivery till date looking at other reviews I don’t think I will get my order please be warned go buy from other websites and make sure you read reviews first stay away from this company even with 50% off save your self you will end up loosing money and time .

1 February 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for the feedback! Sorry to hear something went wrong with your order and you had this experience with us. We would like to look into this for you as this is not the service we want to deliver. Unfortunately, we do not have any contact information from you. Please leave this here so we can contact you or contact our customer service. Thanks in advance!
Kind regards, Team Optimum Nutrition

Rated 1 out of 5 stars

I bought creatine from this company…

I bought creatine from this company after opening it stinks of godless diesel and there is a black protective sticker. After taking it, I vomited for two days and had a headache. They do an investigation very bad service.

30 January 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for your review. We are very sorry to hear you had this experience with one of our products. That is of course not what we want. We always have a complaint procedure in place where we ask you to provide us with as much information as you can so we can investigate the matter further. We take these complaints very serious and we appreciate this information so we can further improve our products and processes. Unfortunately, we do not have any contact information from you. Please leave this here so we can contact you or contact our customer service. Thanks in advance!
Kind regards, Team Optimum Nutrition

Rated 1 out of 5 stars

I ordered few items around 1st January

I ordered few items around 1st January. It was showing that i will get it in 6th Jan. I waited all day no one came to deliver. Tried calling the customer on 10 Jan informed about it to customer representative Shan, he said he will look into it did not hear anything after that. On 17th January called again another agent picked some lady don't know her name. She said it will be resolved within 2days , she was not even listening to the query properly. I asked her what if it is not resolved in 2 days she said they will refund the money in that case. I asked her to send me the proof of discussion in a email which she said she will do, but she did not. I also asked her if there is by way i can collect it from the delivery company as they don't seem to be delivering and it's long time. But she kept saying will be resolved in 2 days.

On 24 January i emailed again to check if it is resolved if not cancel and return. It's 4 days now still no response.

well optimum Nutrition is big brand and they have great products. But their customer service is just shameful.
Below is the header from the only mail i got from the lm
Re: [#460371] Incoming call with 447423710554 on Tue, Jan 10 at 11:57:15 AM

17 January 2023
Unprompted review
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Reply from Optimum Nutrition

Thank you for the feedback! We are very sorry to hear your order was not delivered. A postal investigation was started which took a little longer than expected. Unfortunately, your order was delcared lost. We are very sorry for the inconvenience since this is not the service we would like to provide. We will file a complaint with the carrier. We are also sorry for the unclear communication. Due to a busy period, it took longer for us to respond. In the mean time, the purchase amount was refunded and we have sent you a discount code for the inconvenience. You have had contact with the customer service and we hope you are satisfied with the solution. If not, please let us know. Sorry again for your experience!
Kind regards, Team Optimum Nutrition

Rated 1 out of 5 stars

Why has serious mass changed its formulas? The original formula was the best!

Please optimum nutrition can you go back to your original serious mass flavours? They tasted so good! The new formula of serious mass tastes so bad and has a really bad aftertaste to it!! At least if your going to change the product surely you would make it better not taste worse. It used to be the best mass gainer but now sadly isn’t anymore really needs improvement!!

20 January 2023
Unprompted review
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Reply from Optimum Nutrition

Hey there! We are sorry to hear you are not enjoying our Serious Mass product.

We want to hear more about this so that we can help you further. Can you therefore please email us at: customersupport@optimumnutrition.com

A member of our team will be more than happy to address any concerns you have regarding your product.

Rated 1 out of 5 stars

A truly awful outfit

A truly awful outfit.
3 weeks after placing my order still not had my refund or delivery of the product.
Chased the matter on several occasions, always seem to reach the same customer call handler - who will regularly hang up the phone, and unable to resolve the issue. Avoid this company at all costs. I would pay more for a product with one of the competitors, just to avoid this cowboy service.

** emailed and called on more occasions than I care to remember. Please don't mislead people into thinking you are good at customer service***

4 January 2023
Unprompted review
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Reply from Optimum Nutrition

We thank you kindly for leaving this review, we are saddened of course to hear the nature of this. Regarding this situation, would you please be so kind and contact us via email with your order number- we will be sure to help you as best we can and address all areas you mentioned. – Our email is: customersupport@optimumnutrition.com, we look forwards to helping you here.


Rated 1 out of 5 stars

Package lost, not refunded.

I put one star because I couldn't put zero. Ordered for 120€ of products in November, they used a cheap courrier, package was lost, I contacted them for a refund and they said that they would wait to receive to package back to issue a refund. I told them that this problem was between them and the courrier and that I shouldn't have to wait for a refund, still no money back. Avoid this company at all costs.

14 January 2023
Unprompted review
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Reply from Optimum Nutrition

Good Afternoon,

I am really sorry to hear your experience with us. This is not what we want. If you would please be so kind and present me with your order number I will then look into this situation for you and have this situation resolved as soon as possible!

-Katie- Optimum Nutrition Customer Service.

Rated 1 out of 5 stars

Why have they changed the formula of the serious mass?

The old formula of the serious mass flavours were the best especially the strawberry one the new formulas that they have now taste so artificial and have a weird aftertaste any chance you could go back to the original flavours? The new formulas are so bad

18 December 2022
Unprompted review
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Reply from Optimum Nutrition

Hey there, thanks for this review. I am terribly sorry to hear that do not enjoy your bag of Serious Mass. We would like to hear more about this, so would you please contact us at customersupport@optimumnutrition.com A member of our team will be more than happy to address any concerns you have.

Katie- Customer Service Representative.

Rated 5 out of 5 stars

Awesome staff

Awesome staff! Hailey and Nick are huge assets to the company. Informative and helpful. Plus funny as hell! Only place I go to for supplements

15 December 2022
Unprompted review
Rated 1 out of 5 stars

Avoid Or Be Prepared To Get Angry

This company have one staff member here in the UK who is going under the false name of Shan. He is young and very inexperienced in customer service but is well-oiled in the art of blagging customers when it comes to missing orders, replacements or refunds. Take your time to read the countless reviews all saying they are being ignored when orders go missing.

I have written a letter which I am going to send to the owners of Optimum Nutrition about the poor standard of service many people are experiencing here in the UK. The company head office will not be aware of this so I will be making sure they will be fully in the picture.

14 December 2022
Unprompted review
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Reply from Optimum Nutrition

Hey there,

I am sorry to hear about your recent experience with us. I would like to help you here as much as possible.
Can you please therefore send an email to customersupport@optimumnutrition.com with your order number. Once we have this I will personally make sure I get to the root of this situation for you.

I am looking forwards to helping you- Katie- Customer Service Team.

Rated 1 out of 5 stars

Customer services are shocking

Customer services are shocking, ordered protein for my partners birthday on 08/11 and still not got it. Says it was delivered raised a query with them. Still nothing. His birthday was over a month ago, paid for it and not got my money back. Keep chasing and now I'm getting no reply!!

8 November 2022
Unprompted review
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Reply from Optimum Nutrition

Thank you kindly for your review. I have looked into this for you and I can see that your situation has been resolved by one of our agents.

Regarding your order being lost by the courier, we of course emphasize with you in this situation and share your frustration.

I can see that a postal investigation was started for you and once this was completed you were compensated. In the unfortunate event that a parcel is lost we do have protocols to follow so that we can find out why this happened.

All of your feedback in relation to the courier will of course be noted.

Please let me know if I can help you further- Emma, Customer Service Representative.


Rated 2 out of 5 stars

I tried the gold standard before it was…

I tried the gold standard before it was okay and tasted good too but recently I bought their 100% whey Isolate chocolate flavor and it's too sweet due to the artificial flavors in it - I couldn't find the amount of sucralose in it anywhere on the internet and I tried to call their customer service or "product specialist" who couldn't help at all she just kept saying "they don't show the percentage of sucralose in the products"

I still can't understand why would they hide this information - it's important to us consumers to know exactly how much of it is in our protein.

8 December 2022
Unprompted review
Rated 1 out of 5 stars

No Refund and Courier choice is Worse

Do not use Optimum Nutrition they refuse to refund your money and use a very cheap courier called Evri who did not deliver and since the 22nd November I have still had not parcel and no refund. Avoid at all cost you are better getting goods from elsewhere.

7 December 2022
Unprompted review
Optimum Nutrition logo

Reply from Optimum Nutrition

Hey there! I am sorry to hear about your most recent experience with us. I have looked into this for you however and can see that a refund has been issued in relation to your lost parcel.

Can you therefore please reach out to us regarding this situation so that we can look into this and help you.

Please feel free to contact: customersupport@optimumnutrition.com and quote your order number.

Looking forwards to helping you!

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