First Endurance EFS Electrolyte Drink Mix (Lemon Lime) (30 Serving Tub)

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First Endurance EFS Electrolyte Drink Mix Description:

First Endurance EFS isotonic formula delivers complete nutrition that supports physical and mental performance, redefining the limits of endurance nutrition so you can redefine your limits of endurance. Unlike most hydration mixes, EFS delivers a clinically effective dose of all 5 electrolytes (sodium, potassium, chloride, calcium, magnesium) in the levels shown to prevent cramping.

The brain plays an essential role in endurance and performance. Mental toughness and presence of mind are equally as important as fitness. You have to be able to suffer and handle stress when your body is begging you to stop. That’s why the reimagined EFS includes Suntheanine ®, a patented innovation that gives you the mental toughness you need to push further and find a gear you didn’t know you had.


  • Suntheanine® boosts mental toughness to help you push through suffering
  • Prevents cramping and dehydration—delivers 1160mg of electrolytes
  • Carbs from multiple sources provide immediate and sustained fuel
  • 7% osmolality ensures bioavailability and reduces GI distress
  • Citric and malic acids promote oxygen uptake and energy production
  • New taste profile eliminates the flavor vs function compromise


  • Flavor: Lemon Lime
  • Intended Use: Intra-Workout
  • Caffeine: -
  • Dietary Focus: -

Nutrition Facts:


This product was added to our catalog on April 8, 2021