Updated: 09/19/2017
By Summer Banks Aug 10, 2017

Professional athletes and weekend warriors want performance supplements that work. So, what about First Endurance? We scoured the web for information on side effects, ingredients and clinical research. Additionally, we read through a significant number of customer experiences. Finally, we gathered all the facts to give you the details you want (and need).

First Endurance Readers: Click here to find out why we're giving away samples of our product, Burn HD.

What is First Endurance?

To start, First Endurance is a company that produces and sells performance products, including First Endurance EFS, OptygenHP, Pre-Race, MultiV, and First Endurance Ultragen Recovery Drink. Instructions on how to use the formulas depend on which one you’re using. The ingredients include multivitamins, electrolytes, beta-alanine, and caffeine. EFS Sports formulates several supplements in the line to be stacked.

First Endurance, a company based in Salt Lake City, Utah, was created in 2002. It claims the mission of creating supplements to improve endurance and performance. There’s an online store on the official website, making it easy to purchase. We like that the owners are athletes and that the company has a strong focus on sports nutrition, but read on…

Bad Taste – “Is It Too Much to Bear?”

Our first issue with First Endurance was the claims of bad taste. “If there’s one thing we come across hundreds of times a year it’s the taste of some workout supplements,” offers our Research Editor. “The EFS sports drink is not the only product, but it is one of the more popular and one not everyone enjoys drinking.”

“If you took old coffee grounds, put them in an old car battery and poured water through them, that’s what this tastes like,” said one customer.

“I am sure it is a great product except for absolutely nasty tropical flavor,” agreed another individual.

Despite these reviews, some people enjoyed the taste.

“The taste is very light and pleasant…” mentioned a consumer.

Another stated, “Taste is good; not too sweet or salty.”

First Endurance Ingredients – “Do They Actually Work?”

We also found First Endurance reviews talking about how the products just didn’t work as claimed. “Customers look for reviews before they purchase a product. Unfortunately for companies out there, buyers who have a bad experience tend to leave reviews before those who have good experiences.”

One review stated, “I feel no significant difference in health or well-being.”

“Maybe I didn’t use it for long enough but didn’t seem to matter when I did use them. I think eating healthier plays a bigger role,” read another testimonial.

However, some individuals found First Endurance to work just fine.

“I can’t explain the science and I’m not a nutritionist, so I don’t have any real explanation other than this is one product that works as advertised,” wrote one consumer.

Another agreed, writing, “It works! I’m doing this with half the suggested dosage too!”

After years of experience, we found that it can take something that seems small to ruin the chance of measurable results. If First Endurance doesn’t work or is of low quality, that’s not the best thing.

The Science – “Where is the Research?”

According to the official website, all First Endurance products are approved by their Endurance Research Board, which is made up of physicians and health professionals that work for the company. However, they do not properly link to outside research. Before we can support any product or company, we like to see a substantial amount of science to back it up. There’s are studies out there into many of the ingredients, we’re just not sure why 1st Endurance didn’t bother to share any.

The Bottom Line – Does First Endurance Work?

So, are we racing out to buy First Endurance EFS, Ultragen, Optygen HP or other supplements? We like that the company offers plenty of information on their products and has a strong focus on sports nutrition, but we can’t help but have concerns. First, some reviews claim several of the supplements don’t exactly taste the best. There’s also the issue with reviews claiming the ingredients just don’t work – though you can find the same with just about every company.

If you want to lose weight, we suggest a high-quality product with ingredients tested in human research. We think it’s a good idea to find a company willing to get in there and find the research to support the promises and share it when they find it.

Among the best products we have seen this year is one called Dietspotlight Burn. The ingredient list, available as a label on the official website, is clinically tested with research published in peer-reviewed journals all over the world. Users report having lost weight and feeling changes in a short amount of time and side effects aren’t something frequently shared.

Additionally, the company behind Dietspotlight Burn is so confident in their product that they are offering a Special Trial Offer.

Learn More About Burn HD »
Summer Banks Dietspotlight Author
About the Author:

Summer Banks, Director of Content at Dietspotlight, has researched over 5000 weight-loss programs, pills, shakes and diet plans. Previously, she managed 15 supplement brands, worked with doctors specializing in weight loss and completed coursework in nutrition at Stanford University. full bio.

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