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The Feed First Endurance EFS Drink Mix
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First Endurance EFS Drink Mix

$1.95–$34.99

In stock at checkout.thefeed.com

Cramping is a signal — your body telling you the minerals keeping your muscles firing have been sweated out faster than you're replacing them. Most drink mixes hand you two or three electrolytes and call it done. That's not enough. EFS delivers a clinically effective dose of all five electrolytes, 30g of…

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See all 2,240 The Feed products·Visit checkout.thefeed.com

Flavor
Lemon Lime · Sour Watermelon · Fruit Punch · Orange Splash · 4 Pack
Size
Single Serving · 30 Serving · Variety Pack

Price and stock from checkout.thefeed.com, refreshed daily. We may earn a commission if you buy.

First Endurance EFS Drink Mix at a glance

BrandThe Feed
Price$1.95–$34.99
TypeHydration
Options5 flavors, 3 sizes
AvailabilityIn stock at checkout.thefeed.com
ReturnsContact The Feed within 30 days if food arrives unsuitable to eat for a replacement or…

Price check

At $1.95, the First Endurance EFS Drink Mix is one of The Feed's more affordable items, whose 2,239 listed products run $0.53 to $6,125.

Similar items from other brands we track run $29.99 to $49.99.

About this product

From The Feed's product listing:

Cramping is a signal — your body telling you the minerals keeping your muscles firing have been sweated out faster than you're replacing them. Most drink mixes hand you two or three electrolytes and call it done. That's not enough. EFS delivers a clinically effective dose of all five electrolytes, 30g of carbohydrates, and 1,175mg of total electrolytes in an isotonic formula your body can actually absorb. Zero artificial ingredients. This is what serious endurance fueling looks like. All Five Electrolytes, at Doses That Actually Work Sodium, potassium, chloride, calcium, and magnesium — all five at clinically supported levels, not token amounts. At 1,175mg total electrolytes per serving, EFS covers your bases the way two-electrolyte mixes never can. Isotonic Formula for Fast, Comfortable Absorption EFS mixes to a 7% carbohydrate solution — matching your body's own fluid concentration

Buying from The Feed

The Feed is one of the best places to try endurance fuel before committing, since you can buy single gels, chews, bars and drink mixes from dozens of brands in one order. Skip it if you only buy one product in bulk and can get it cheaper on subscription from the maker. Read the return rules first: opened food gets store credit, not cash, and some supplements are final sale once opened.

Returns
Contact The Feed within 30 days if food arrives unsuitable to eat for a replacement or credit. Opened food gets store credit only, gear is returnable only if damaged, and opened specialty supplements (over $40), ketones and CBD are final sale.

Read our full The Feed review and shop all products →

Frequently asked questions

How much is the First Endurance EFS Drink Mix?
The Feed lists it at $1.95–$34.99 on checkout.thefeed.com. We refresh prices throughout the day, but always confirm the final price at checkout.
What is The Feed's return policy?
Contact The Feed within 30 days if food arrives unsuitable to eat for a replacement or credit. Opened food gets store credit only, gear is returnable only if damaged, and opened specialty supplements (over $40), ketones and CBD are final sale.
What options does the First Endurance EFS Drink Mix come in?
Flavor: Lemon Lime, Sour Watermelon, Fruit Punch, Orange Splash, 4 Pack. Size: Single Serving, 30 Serving, Variety Pack.
Where can I buy the First Endurance EFS Drink Mix?
The First Endurance EFS Drink Mix is sold directly by The Feed on checkout.thefeed.com. The Shop now button on this page goes straight to the product there.
Is the First Endurance EFS Drink Mix in stock?
Yes. The Feed lists it as in stock on checkout.thefeed.com as of our latest check. Stock and prices refresh throughout the day.
Is The Feed a legit store?
The Feed is one of the best places to try endurance fuel before committing, since you can buy single gels, chews, bars and drink mixes from dozens of brands in one order. Skip it if you only buy one product in bulk and can get it cheaper on subscription from the maker. Read the return rules first: opened food gets store credit, not cash, and some supplements are final sale once opened. Our full The Feed review covers shipping, returns and what to check before ordering.
Is the First Endurance EFS Drink Mix expensive?
At $1.95 it is on the affordable end of The Feed's range ($0.53 to $6,125 across 2,239 products), and similar items from other brands run $29.99 to $49.99.

More from The Feed

Shop all The Feed →

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