Maximise your training and the time you spend at altitude.
First Endurance creates the most exciting and researched endurance products in the world. Here are the top choices for anyone who trains at altitude.
Optygen HP
OptygenHP is clinically proven to increase VO2Max, increase the body’s ability to adapt to high levels of physical stress, increase anaerobic threshold and reduce lactic acid.
Two of the main adaptogens used in Optygen HP (Rhodiola and Cordyceps CS4) were first used by Tibetan Sherpas to help climb Mt Everest. Clinical research has shown these adaptogens improve performance and increase the body’s ability to adapt to high levels of physical stress.
- Increases VO2Max
- Increases anaerobic threshold
- Reduces lactic acid & modulates Cortisol
Multi-V Endurance Multi-vitamin
MultiV is designed to meet the unique requirements of endurance athletes. Features include clinically effective doses of iron, vitamin K2, vitamin D, and unparalleled antioxidant protection.
- High-Potency Endurance Multivitamin
- Improves Oxygen Utilization
- Contains Ferrochel Iron for Peak Performance
Ultragen
Ultragen is the most advanced recovery formulation ever developed. Each serving of Ultragen delivers the levels of nutrients that have been shown in clinical research to maximise recovery and give you an extra edge over the competition.
- Rapid and Complete Endurance Recovery Formula
- Refuels Exhausted Muscles and Maximizes Performance
- Gluten-free & Lactose-free
- Recover faster than ever before
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EFS Drink
With the highest electrolyte content available, EFS drink mix provides everything you need to maximise endurance and performance during exercise.
A key ingredient, Malic acid, stimulates oxygen consumption by increasing mitochondrial uptake. It also allows the body to make more ATP more efficiently - even under low oxygen, or hypoxic conditions.
- Endurance Drink Mix
- Prevents Cramping & Dehydration
- Contains Malic Acid
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EFS Drink sachets - Tray of 10
With the highest electrolyte content available, EFS drink mix provides everything you need to maximise endurance and performance during exercise.
A key ingredient, Malic acid, stimulates oxygen consumption by increasing mitochondrial uptake. It also allows the body to make more ATP more efficiently - even under low oxygen, or hypoxic conditions.
- Endurance Drink Mix
- Prevents Cramping & Dehydration
- Contains Malic Acid

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EFS Liquid Shots - Tray of 6
EFS Liquid Shots are designed to be used in place of gels that can slow down absorption and digestion. Features include a 400-calorie supercharged endurance formula that boasts over 1500mg of electrolytes, 1000mg of amino acids and 100 grams of carbohydrates.
- 400 high-quality calories
- Over 1500mg electrolytes
- 1000mg of amino acids
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