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New to Hammer and want a quick start view here
- Ultra Running fuelling guide here
Fuelling a long event? Read our Perpetuem Long-Distance Fuelling Guide — when to use Perpetuem vs gels, mixing ratios, calorie targets, and race-day strategy for 3hr+ efforts.
Perpetuem is designed for athletes who need steady energy during long-distance events, including marathons, ultra-running, triathlon, sportive rides and multi-hour training days. Unlike shorter-session sports drinks, Perpetuem combines carbohydrate with protein and healthy fat, making it a strong choice when your event goes beyond the usual 2–3 hour window. It is especially useful when you want drinkable calories that are easy to sip consistently over several hours.
Hammer Perpetuem single-serving sachets are a convenient way to test the formula and different flavours before committing to a full tub.
Perpetuem is a drinkable endurance fuel developed for long training sessions and races, particularly efforts lasting more than three hours. Its formula combines complex carbohydrates, protein and healthy fat, making it different from shorter-duration sports drinks and energy gels.
Why Choose the Sachets?
- One convenient single serving
- Ideal for testing Perpetuem flavours
- Easy to carry during training or racing
- Suitable for cycling, triathlon, ultra-running and long-distance events
- A practical option for occasional use or travel
Mix the sachet with water according to the instructions on the packaging. Individual calorie and fluid requirements vary, so adjust your intake according to your body weight, conditions, intensity and experience.
Perpetuem supplies endurance fuel but should not be treated as your only hydration source. Carry separate water and use Endurolytes or Endurolytes Fizz when additional electrolyte support is required.
Enjoyed your trial sachet? Choose a full Perpetuem tub for better value during regular training and racing
Why choose Perpetuem for long-distance events?
- Designed for longer workouts, races and endurance events
- Ideal for marathons, ultra-running, triathlon and long cycling events
- Combines carbohydrate with protein and healthy fat
- Useful when gels alone become hard to stomach
- Works well as a “meal in a bottle” style endurance fuel
When the miles pile up, Perpetuem delivers steady, long-lasting fuel your body can depend on. Ideal for endurance athletes who want consistent energy without the rollercoaster, it’s a trusted choice for staying strong through long training sessions, races, and all-day efforts. Thanks to its satisfying formula, Perpetuem helps keep hunger at bay, while its added protein sets it apart from many gels that offer quick energy but little staying power.
INGREDIENT BREAKDOWN
2.0 = TAPIOCA Maltodextrin – Non-GMO and unsprayed, tapioca is the king of complex carbs! Far less processed, guaranteed no GMO content, lower mono and disaccharide content/much higher percentage of polysaccharide content (courtesy of its lower Dextrose Equivalent), less sodium content, and even closer to the desired neutral pH, tapioca is the sugar and corn alternative we’ve been wanting to bring to you for years is finally here!
Isolated Soy Protein – A dry powder food ingredient that has been separated or isolated from the other components of the soybean, making it 90 to 95 percent protein, and nearly carbohydrate- and fat-free.
Soy Lecithin – The extract from soybean oil, lecithin is an easily digestible source of healthful fat. This helps create a feeling of satiety and also supports the body’s natural fat-burning capabilities.
Sodium (Tribasic) Phosphate – This compound enhances the functioning of all three of the body’s ATP-producing energy systems—the short-term ATP-CP system, the medium-term lactic acid system, and the long-term oxygen/aerobic system.
A primary benefit of sodium (tribasic) phosphate is its ability to buffer blood acidity and help maintain a more ideal acid-alkaline balance by neutralizing excess hydrogen ions within the muscle cell. Effectively buffering lactic acid extends energy production within this system. This nutrient also increases 2,3 diphosphoglycerate (2,3-DPG). This compound, found in red blood cells helps release oxygen from hemoglobin into the muscle cells. An increase in 2,3-DPG will improve the availability of oxygen to working muscles during exercise.
L-Carnosine – This dipeptide (a combination of two amino acids) L-carnosine is a potent lactic acid buffer. It also offers antioxidant support.
L-Carnitine Tartrate – L-Carnitine Tartrate is a compound containing L-carnitine chelated (“bonded”) to L-tartrate, which is a salt of tartaric acid. L-carnitine is the key nutrient involved in the shuttling of fatty acids into the cell for energy production. Tartrate is a potent antioxidant.
Choline Bitartrate - A type of B-complex vitamin that helps with efficient use of body fat stores as energy. Choline bitartrate also supports enhanced cognition, learning, and memory.
Stevia – A natural, calorie-free sweeter derived from the leaves of Stevia rebaudiana, a plant native to Central and South America. It does not affect blood sugar levels or contribute to tooth decay like sugar does.
Chromium Polynicotinate – This trace mineral helps regulate blood sugar and plays a vital role in energy production.
Energy Smart® (Grape Juice, Rice Dextrin) – This all-natural, low-sugar sweetener plays an important role in Hammer Gel’s delicious flavor while contributing minimally to the overall carbohydrate content. Energy Smart® is certified non-GMO, gluten-free, and allergen-free.
New to endurance fuelling? Read our Beginner's Guide to Endurance Fuelling Beginners Guide to Endurance Fuelling — covering what to eat before, during and after training, how many calories you need, and which products to start with.
Or try our new bundles and save 10% when you mix and match your products.
NUTRITIONAL INFORMATION
Please see other nutritional facts for flavours as displayed on our website.
VIDEOS
Let customers speak for us
Hammer Nutrition Perpetuem was a key part of my fuelling strategy for the Leeds Ironman last weekend.
It gave me steady, reliable energy throughout the race and, most importantly, sat really well in my stomach.
No heavy feeling, I was able to keep fuelling consistently right throughout my cycling. A great product for long-distance — so glad this was recommended to me during my early training in preparation.
Extremely useful to use whilst cycling, removes the faff of opening gels whilst cycling and the solid bottle makes it easy to get in / out of jersey pockets.
Brilliant product - i use these in all my endurance events - some lasting up to 20 hours. These are great to ensure you get the required electrolytes without over hydrating.
Great product! Very good quality supplement
Great service and the products are amazing, especially for endurance sports. I'm a big fan of the Endrolytes Electrolyte Caps. Their magnesium supplement and vitamin D are also very very good! I would highly recommend.
I’ve used Hammer products for around 6 years now & my favourite by a mile is the hammer Perpetuem, it’s fueled my last 100 mile ultra marathon not to mention multiple long distance triathlon's . It has 180calories per serving and it’s 34g of carbs & 5g of protein seems to work well . I’d strongly recommend for anyone who wants to take on ultra races as this fuel will support you when you need it most .
I started using Hammer Heed and Perpetuem 5 years ago and it's been such a game changer for my. Finding nutrition you can trust is so important for any athlete and I highly recommend Hammer Nutrition for any distance and any sport.
I couldnt race without hammer products. Heed is my favourite, such an amazing product. Paired with the gels it makes a great fueling recipe. Always fast shipping
Wonderful product for general Well being and Recovery. Great quick shipping.
Love all your products. I personally will concentrate on the perpetuum for my long swim(45km) as it feels like a meal every 4mins.
Thank you
great taste! great weight to calorie ratio! thanks
Great quality feel and easy to drink from whilst riding.
No plastic smells either.
Just need a few different colours?
Frequently Asked Questions
How long will my delivery take and how much does it cost?
Orders placed before 2:00 PM (UK time) are dispatched the same working day. Standard delivery to mainland Great Britain takes 2–5 days at a flat rate of £3.50, or free on orders over £10.
Large tubs are automatically upgraded to DPD next-day delivery. Shipping to Northern Ireland, the Channel Islands, and the Scottish Highlands costs £4.50, or free on orders over £80.
Can I change or cancel my order after placing it?
Because we process and dispatch orders quickly, we are usually unable to modify products, delivery methods, or addresses after submission.
To cancel an order, you must contact us on the same calendar day it was placed. If dispatch has already occurred, you can return the unused items within 14 days at your own shipping expense.
What is your returns policy if I change my mind?
You have 14 days from the day after delivery to cancel your order. Items must be unused, in their original packaging, and in resaleable condition. Important Step:
You must email us via the bottom of our Home Page first to obtain a Returns Authorisation Number and a free Royal Mail returns sticker; unauthorised returns cannot be processed.
Note that opened, sealed supplements cannot be returned for hygiene reasons.
What should I do if my order is damaged, faulty, or incorrect?
Check your parcel immediately upon arrival. If there is an issue, notify us within 48 hours of delivery via teh contact us at the bottom of our Home page.
Please include your order number, a description of the issue, and photos of the damaged items and packaging. We will provide a free replacement or full refund.
How long do refunds take to process?
Once your return is received, inspected, and approved, we process refunds back to your original payment method (card, PayPal, or bank transfer).
This typically takes place within 7 working days, and always within a maximum window of 30 days.
Are Hammer Nutrition products safe for drug-tested athletes?
Yes. Key products within our range—including Endurolytes (4ct/120ct), Endurolytes Extreme (3ct/120ct), Endurolytes Extreme Powder, and Endurolytes Fizz - are officially Informed Sport certified.
Additionally, our products are manufactured in strict ISO, GMP-compliant, and SQF Level 3 Certified facilities to ensure the highest standards of food safety and purity.
What do you use to flavour your sports nutrition products?
We use only premium ingredients with zero artificial flavours, artificial sweeteners, or chemical colorants.
Our natural flavours are extracted from real food sources (such as fruits, essential oils, and botanicals) in full compliance with FDA regulations.
They are entirely derived from non-allergenic materials and are formulated for a clean, subtle, non-sweet taste.
What should I do if my order has not arrived?
Estimated transit times are 2–5 days. If your parcel has not arrived within 5 days of placing your order, notify us immediately via our contact us at the bottom of our Home page.
We will launch an investigation with the carrier and provide updates or arrange a replacement where appropriate.
Do you accept backorders for out-of-stock items?
No, we do not accept backorders. If an item is currently unavailable, you can enter your email address in the "email me when back in stock" widget directly on the product page to receive an automated real-time notification the moment inventory is replenished.
Are your supplements suitable for specific dietary restrictions?
Our clean sports nutrition range is formulated to support optimal body function and is completely free from gluten, artificial preservatives, and artificial colorants.
If you have specific medical conditions or severe allergen concerns, we recommend checking the explicit ingredient panels or consulting a healthcare professional prior to consumption.
