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Best Supplements for Endurance Performance

Endurance athletes need optimised oxygen delivery, efficient energy metabolism, electrolyte balance, and inflammation management to perform at their best over sustained efforts.

Top 5 Recommended Supplements

1

Beta Alanine

3.2-6.4g daily

Increases muscle carnosine for acid buffering. Benefits efforts lasting 1-10 minutes and repeated high-intensity efforts within endurance events

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2

Beetroot Juice/Nitrates

400-800mg nitrates

Increases nitric oxide, improving oxygen efficiency by 3-5%. Equivalent to 500ml beetroot juice 2-3 hours before exercise

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3

Caffeine

3-6mg/kg body weight

Reduces perceived exertion, enhances fat oxidation, and spares glycogen. Proven ergogenic aid in every endurance study

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4

Iron

Monitor ferritin levels

Endurance athletes are at high risk of depletion. Ferritin should be >50 for optimal oxygen transport. Test regularly

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5

Sodium Bicarbonate

200-300mg/kg 60-90 min before

Buffers blood pH, delaying fatigue in high-intensity endurance efforts. GI discomfort is the limiting factor

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Sample Daily Stack

1

Daily: Beta Alanine (3.2g split doses) + Iron (if needed) — load for 4 weeks

2

Race day minus 3h: Carb-rich meal

3

Race day minus 90min: Sodium Bicarbonate (200mg/kg) in water (test in training first)

4

Race day minus 60min: Beetroot shot + Caffeine (3-6mg/kg)

5

During: Electrolytes + Carbohydrates (60-90g/hour for efforts >90min)

Lifestyle Tips

Periodise nutrition — train low (carb) occasionally, race high (carb loaded)

Practice race nutrition in training — never try anything new on race day

Build aerobic base with Zone 2 training (80% of volume)

Address iron status proactively — test ferritin every 3-6 months

Altitude or heat acclimatisation provides additional endurance benefits

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This information is for educational purposes only and does not constitute medical advice. Supplement recommendations are based on published research but individual needs vary. Always consult a qualified healthcare professional before starting any supplement regimen. Amazon links are affiliate links.

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