First EnduranceElectrolyte Fuel System (25 Servings)(Return to Product Page)

I drink it mixed with water. I like that it comes in a powder that you mix with water and it turns into a sport drink. I wish it came in bacon flavor.

I'm prone to dehydration headaches after rides on hot days and decided to try EFS. Haven't had a headache since, and feel much better after long hot rides. Grape flavor is great, not too sweet and dilutes well in water. I'm going to be ordering more when the first can runs out.

This is a great drink if you want to avoid cramps. It tastes good and does not get too sweet.

Hammer products left me weak and cramping over and over again. I was a neophyte and very frustrated by my cycling sessions. I took a chance on First Endurance's products and have been transformed on the bike. I now have complete confidence in my ability to thrive no matter how much I push myself. No more cramping hours later when I have been in the prone position for several hours, either. For me, First Endurance was the answer.

Enjoying the Very subtle (i.e., not too sweet) flavor and have been satisfied with how well it hydrates.

I have tried a lot of drink mixes and prefer EFS because has some sweetness, but is not too sweet and has the taste. It does the job of providing hydration and energy on a hot summer day of biking or a cold winter day of XC Skiing.

Works very well in deed! Better than any types for energy products I've taken in the past. For a long ride, I usually take 1 serving 12 hours before the ride and a half of back up bottle for every 20-25 miles. Feel fresh the whole ride and helps prevent the cramps too. Didn't really care for the taste, but it tastes like salty mineral water.

Having tried most of them, I find this one the best. It does not upset my stomach, is not sweet and does the job it is supposed to do. I like the mild grape and tropical fruit flavors. Also, it dissolves easily in water and tastes great even when warm.

Been using EFS for over 10 years and have yet to find a better sports drink

EFS has less of a sugary taste and doesn't upset my stomach as much as some of the tablets I've used. It also seems to have a higher electrolyte content.

It worked all day on my 100 mile mountain pass ride

Been using EFS for years and will continue. Great product.

i dump the required amount in my drink bottles before a road ride. I used to cramp up around 40 miles, but now I can do seventy and still not have problems

I have tried them all and this one is the very best. Never upsets my stomach and provides what's needed for long rides. Subtle taste is very pleasant in a variety of flavors. Not overly sweet.