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Review summary

Created with AI, based on recent reviews

Evaluating 56 reviews, reviewers overwhelmingly had a great experience with this company. Customers consistently praise the products for their effectiveness, quality, and pleasant taste, often highlighting the science-backed formulas and the absence of stomach issues during use. Many appreciate the convenience of the packaging and the ease of calculating carbohydrate intake. The delivery service is frequently mentioned as fast and efficient. However, some people were dissatisfied with the taste of certain products, describing them as unpleasant or aggressive. A few customers also noted that the energy drink did not mix smoothly. Additionally, some reviewers felt that the high sodium content in the highest-carb gels makes them less suitable for top-level professional athletes who require higher carbohydrate intake.

What people talk about most

Product

Reviewers mention positive feedback about product. Customers consistently praise the products for their... See more

Quality

People report positive experiences with quality. Customers consistently praise the products for their... See more

Price

Reviewers highlight positive aspects of price. Many consumers consider the price-performance ratio to be... See more

Delivery service

Users describe positive interactions with delivery service. Customers consistently praise the fast shipping,... See more

Reviews shaping this summary

Rated 5 out of 5 stars

I've been using Nduranz products throughout my ultra-marathon training and racing, and I absolutely love them. The science behind the formulas gives me real confidence in what I'm putting into my body... See more

Rated 5 out of 5 stars

the nduranz products are very simple and effective sport food. no gimmicks - just functional ingredients that are based on broad scientific results. I use these products in training and races for ye... See more

Rated 5 out of 5 stars

I’ve been using Nduranz products for over a year now and they’re my favourite brand I’ve tried yet. Zero gi issues (even while pushing over 120g/h during running), great flavours and convenient packag... See more


Company details

  1. Sports Nutrition Shop
  2. Vitamin & Supplements Shop

Written by the company

We help athletes reach their potential by providing them with sports nutrition products that are based on the latest scientific evidence.


Contact info

4.8

Excellent

TrustScore 5 out of 5

217 reviews

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Replied to 100% of negative reviews

Typically replies within 1 week

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Rated 5 out of 5 stars

Outstanding effect on performances

Outstanding effect on performances, both pre and intra workout: gels are really digestible and great in terms of both carbohydrates and electrolytes; still, training bars have a great flavor and the NRGY drink is great for long workouts.

4 August 2025
Unprompted review
Rated 5 out of 5 stars

Highly recommend !

I've been using Nduranz products throughout my ultra-marathon training and racing, and I absolutely love them. The science behind the formulas gives me real confidence in what I'm putting into my body and how it supports my performance. The 45g carb gels have been a total game changer! I’m especially impressed with the Regen Recovery drink ! since making it a regular part of my routine, I’ve noticed a huge difference in my recovery and how I feel overall

3 August 2025
Unprompted review
Rated 5 out of 5 stars

Perfect Experience with Nduranz

Ordering from Nduranz was an awesome experience from start to finish. The website is super easy to navigate, the checkout process is smooth, and despite shipping to Poland, the package arrived incredibly fast, seriously impressive delivery time!

The products themselves? Absolutely top-notch. The flavors are fantastic, not overly sweet, super easy on the stomach, and perfect during both training and racing. You can really tell that Nduranz knows what endurance athletes need.

Customer service was also spot-on, quick, friendly, and helpful in every interaction. You don’t always get that level of support, especially with international orders, so that was a big plus.

Overall? Just amazing. Great products, great people, great vibes. I’ll definitely be ordering again, highly recommended!

24 July 2025
Unprompted review
Rated 5 out of 5 stars

Great products and great customer service

For me, the best fuel for training by far, the nrgy gel, training bar and effervescent tablets are 🔝, fast delivery, within a week, from Slovenia to Spain and of course, great customer service. Thanks, Nduranz ❤️.

4 August 2025
Unprompted review
Rated 5 out of 5 stars

I’ve been using Nduranz products for…

I’ve been using Nduranz products for over a year now and they’re my favourite brand I’ve tried yet. Zero gi issues (even while pushing over 120g/h during running), great flavours and convenient packaging. Highly recommend!

4 August 2025
Unprompted review
Rated 5 out of 5 stars

Great Lower Cost Bicarb Alternative - No Stomach Issues

I purchased the Nduranz Bicarb to compare it to Maurten, which is much more expensive. Several runners have tried it, and none have experienced any stomach discomfort, and many have PR'd. Shipping was fast, but it was a little pricey to the US, so I'd recommend consolidating orders to lower the per-product shipping cost. I 100% recommend this product as a lower-cost bicarb alternative.

3 May 2025
Unprompted review
Rated 4 out of 5 stars

Because have 45 Gr carbs

Because have 45 Gr carbs in plic, ok for stomach, feel good. Don't have enough salt, for me, I take salt pills supplementary.

1 May 2024
Unprompted review
Nduranz logo

Reply from Nduranz

Hi,
Our gel contains 730 mg of salt per serving, which is among the highest on the market. While it's possible to supplement additional salt, it's important to balance it with adequate fluid intake to support proper hydration and minimize the risk of gastrointestinal discomfort.

Rated 5 out of 5 stars

Amazing product

Amazing product, have complete trust for all of my long distance training sessions and races. No stomach issues and love the fact that it also supplements my body’s electrolyte needs. Really like the refill gel bottles.

14 July 2024
Unprompted review
Rated 5 out of 5 stars

Great Quality

Great product, being able to hit high carb numbers with out any digestive issues make this product a great choice for any athlete.
The competitive price also makes this one of the best products out there 👌

8 May 2024
Unprompted review
Rated 5 out of 5 stars

I am only using these products for a…

I am only using these products for a week now and already I am experiencing a vast improvement. I have done over 220 marathons to date and I had been having trouble with energy. Just over a week ago someone recommended Nduranz products and I have to say they surpass everything else that I have tried. At the weekend I did the Clare Burren marathon and with the help from these products it was the most enjoyable in quite some time and I am coming up on 72 years. I can now look forward to a lot more enjoyable running thanks to this company. Ps I am not getting paid for this comment, just speaking the truth.

25 May 2024
Unprompted review
Rated 5 out of 5 stars

Great gels

Great nutritional values in a good format. The unflavoured gels are exceptional!

3 May 2024
Unprompted review

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