I have a sensitive stomach. Do you offer energy gels or drinks that are easier on the digestive system, maybe without artificial ingredients or acids?

Absolutely! Many endurance athletes find that certain ingredients can cause stomach upset during long efforts. Our range includes options specifically designed for sensitive stomachs. For example, our Hammer Nutrition's Citric Acid Free Drink uses maltodextrin and natural flavours, making it a gentler choice for hydration and fuel. We also offer energy gels with carefully selected ingredients to minimise digestive distress, ensuring you can focus on your performance rather than your stomach.

What's the difference between your energy gels and the sustained endurance drinks for fueling long races?

Great question! Energy gels offer a quick and concentrated carbohydrate boost, perfect for immediate energy when you need it most, like during intense intervals or pushing up a hill. Our sustained endurance drinks, on the other hand, provide a more gradual release of energy from carbohydrates like maltodextrin, along with essential electrolytes to maintain hydration and fluid balance over longer periods. They are ideal for steady-state efforts and are a fantastic option for long distance endurance drinks for sports when you need consistent fuel and hydration.

How do I know which endurance fuel is best for my training versus a race day, especially for activities like marathons or long cycling events?

The best fuel depends on the duration and intensity of your activity. For training, you might use a combination – perhaps an energy bar for a pre-long run snack, an endurance drink throughout, and a gel for a late-stage boost. For race day, it's wise to stick with what you've practiced. If you're doing a marathon or a long cycling event, consider using our endurance drinks for consistent energy and hydration, supplemented with gels during moments you anticipate needing a rapid energy surge. Experiment during your longest training sessions to find your perfect race day strategy.

Are Hammer Nutrition's energy bars a good real-food option for endurance athletes who prefer not to rely solely on gels and drinks?

Yes, our real-food bars are an excellent choice for endurance athletes looking for less processed fuel. They provide sustained energy from a blend of carbohydrates and sometimes healthy fats and proteins, making them ideal for longer efforts or as a calorie-dense snack before or during extended activities. While gels offer rapid energy and drinks focus on hydration and carbs, our bars offer a more substantial, whole-food feel that many athletes prefer for maintaining energy levels over many hours.

Collection: Endurance sports drinks

HEED Sports Drink — hydration, energy and electrolytes in one bottle. Citric acid-free, no added sugars, 6 electrolytes. Best for sessions up to ~2 hours where you want fuel and hydration together.

Perpetuem — long-distance fuel with carbs, protein and healthy fats. Designed for efforts beyond 2 hours where sustained energy and muscle protection matter most.

Finished Training? Switch From Fuelling to Recovery

HEED and Perpetuem are designed to support endurance exercise while you are training or racing. After finishing, switch to Recoverite®—Hammer Nutrition's dedicated endurance recovery sports drink containing carbohydrate, whey protein isolate, L-glutamine and five electrolytes.

Shop Recoverite → Explore Endurance Recovery Drinks → Read the Recovery Drink Guide →

Shop HEED → Electrolytes → FREE 5 Secrets Guide →

When to use	Training sessions and races up to ~2 hours. Mix 1–2 scoops into your bottle. Provides steady calories + full-spectrum electrolytes without separate capsules needed.
HEED vs Perpetuem	HEED — up to ~2 hours, carbs + electrolytes • Perpetuem — 2+ hours, carbs + protein + fats for sustained output. Switch to or combine Perpetuem on longer efforts.
HEED vs Endurolytes Fizz	HEED — electrolytes + calories in one • Endurolytes Fizz — electrolytes only, no calories. Use Fizz when you're getting calories from gels or food.

HEED Sports Drink – High Energy Electrolyte Drink

Under 2hr Drink

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HEED Sports Drink Sachets | Try Single Servings

Under 2 hour fuel

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HEED Sports Drink Sachets | Try 3 flavours

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Hammer Perpetuem – Long-Distance Endurance Fuel Tub

Over 2 hour Drink

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Hammer Perpetuem Sachet Kit – Try Before You Commit

Over 2 hour Drink

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Hammer Perpetuem – Single Serving Sachets

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I love Hammer Products... they never upset my stomach and I’ve got a sensitive one. Their products are great and reasonably priced. Plus, you can’t beat the customer service, I’ve never had a company call to make sure I like their products and do I have any questions? What!!! Nice added touch & I’ll continue to use this company. Thanks for going above & beyond.

Quality products without anything artificial. No gimmicks. No hype, just pure supplements that do why they say they will. My favorite products, in no particular order: Cola Fizz, Fully Charged, Perpetuem (Strawberry and Caffe Latte), Hammer Gel (Peanut Butter Chocolate), Chocolate Recoverite (Vegan now), Tissue Rejuvenator, and Essential Mg.

When you want proven, well-planned, and CLEAN athletic nutritional products, HAMMER is second to none. I LOVE the protein bars; both whey and vegan. Other amazing items I use regularly are Endurolytes Extreme capsules, Recoverite, Perpetuem Solids, and several of their wonderful supplements.

Their motto - Fuel Right, Feel Great - is totally accurate! Hammer does its research and provides supplements to optimize my training. I’m 68 years old and can race at the top level in master's events BECAUSE I follow their advice: Fuel Right, Feel Great.

Collection: Endurance sports drinks

Finished Training? Switch From Fuelling to Recovery

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