Pure Energy® — Isotonic Energy. Electrolytes. Independently Tested.
Isotonic formula. Electrolytes included. Informed Sport tested. Apple & Blackcurrant, Orange and Natural.
Mid-session dehydration is a performance killer. A 2% drop in body weight through sweat is enough to meaningfully reduce strength, endurance and focus. Most energy drinks ignore this. Pure Energy® was built around it.
An isotonic formula is absorbed at the same rate as the body’s own fluids — delivering energy and electrolytes rapidly and directly, without the gut discomfort that hypertonic drinks cause during exercise. This isn’t a detail. It’s the difference between a drink that performs and one that sits in your stomach.
Electrolytes — Sodium, Potassium, Magnesium — replace what sweat depletes, keeping muscles firing and nerves conducting from warm-up to cool-down. Energy delivery and hydration working together, not separately.
Informed Sport tested — every batch independently verified free from banned substances. For competitive athletes, that’s non-negotiable. Available in Apple & Blackcurrant, Orange and Natural.
Best for
Competitive and professional athletes
Those requiring Informed Sport certified products
Pre-workout energy and focus support
Anyone who refuses to compromise on testing standards
Why it works
Isotonic formula Absorbed at the same rate as the body’s own fluids — rapid energy and electrolyte delivery without gut discomfort during exercise.
Electrolytes (Sodium, Potassium, Magnesium) Replace what sweat depletes — maintaining muscle function, nerve signalling and hydration throughout the session.
Fast-release carbohydrates Rapid energy delivery to working muscles — sustained performance from start to finish.
What makes it different
Isotonic absorption — works with your body, not against it
Electrolytes included — energy and hydration together
Informed Sport tested — every batch independently verified
Three flavours — Apple & Blackcurrant, Orange and Natural
Trusted by elite athletes since 1997
How to Use
Mix one serving with 500ml of cold water. Drink during training or competition. Use as your primary hydration drink throughout the session for best results.
Since 1997 Bio-Synergy has been setting standards in sports nutrition. Certified B Corporation®. Made in the UK. Independently tested. Used by elite and professional athletes for over 25 years.
With both fast and slow release carbohydrates, our high-energy isotonic formula is engineered to help fuel and hydrate you during training and racing. It’s the ideal drink for longer sessions when your energy levels drop and sweat rate rises. Pure Energy® has been scientifically proven to help athletes maintain endurance performance by replacing fluids, refueling working muscles and replenishing electrolytes. This makes it more effective than water at rehydrating you and protecting you from cramp. That’s why it’s used by some of the world’s top performers and athletes.
Did you know?
Pure Energy® Elite was used by the Land Rover BAR team on their way to winning the the America’s Cup World Series in 2016.
Is Pure Energy® right for you?
If you’re an endurance athlete or you’re on the sports field for a long time, and you need to keep up your energy levels, then Pure Energy® is the ideal isotonic sports drink. With a dual source of carbohydrates and essential electrolytes, Pure Energy® can help fuel you through your longest, most demanding sessions. So, if you’re a marathon runner, triathlete, cyclist, swimmer or team sport athlete, Pure Energy® is designed just for you – helping you perform better for longer.
Looking for something else?
We’ve got you covered with a wide range of other performance products: Activeman Energy Charge, Essential Sports Fuel, Activeman Thermolean®, Whey Better® and Vegan Lean&Green®.
Superior manufacturing for superior results
As with all our products, Bio-Synergy Pure Energy® is made from only the highest quality, locally sourced ingredients. What’s more, Pure Energy® is manufactured in our own UK-based facilities by an expert team of scientists. That’s how we ensure all our products are made to the same high standards.
How to take Pure Energy®
Add 1 scoop (30g) to 1 litre of water and shake, ideally in a sports bottle or shaker. You should also be well hydrated before you exercise by drinking 1/3 and then sip throughout your workout. Make sure you have some when you have finished too.
Are you a science geek?
If you love the science behind why we do what we do – and our website isn’t technical enough for you – you’re in luck. Have a look at this report> from research conducted by XYZ Person.
Awesome company, products are on point been using the insanity pre workout and the pure energy supplement. Playing elite level 7s pure energy has helped keep the energy levels up through the rigorous training. Delivery was very quick. Jonathan Baxter
Established 1997
made in the UK
Certified B Corp®
Independently Tested
Used by Elite Athletes
Proof in performance
Trusted by high performers. Proven at every level.
Complete Your Stack
Frequently bought together for better results.
HAVE A QUESTION? WE'RE HERE TO HELP.
Customer support is available Monday to Friday 9am - 5pm. Average Answer time: 24 hours
Absolutely. All our supplements undergo rigorous testing for safety and efficacy. We adhere to the highest standards to ensure our products are free from banned substances, making them safe for athletes at all levels.
How do I know which Bio-Synergy supplement is right for me?
Our product range is designed to cater to various fitness goals, whether it's building muscle, losing weight, or enhancing endurance. For a more personalised approach we recommend a Bio-Synergy DNA test to identify the best supplement for you.
Can I take Bio-Synergy supplements with other medications?
While our supplements are safe, we recommend consulting with your doctor before starting any new supplement regimen, especially if you are currently taking other medications.
How should I store my Bio-Synergy supplements?
Keep your supplements in a cool, dry place away from direct sunlight. Make sure the cap is tightly sealed after each use to maintain their potency and freshness.
What is the return policy for Bio-Synergy supplements?
We stand behind the quality of our products. If you are not satisfied with your purchase, you can return it within 30 days for a full refund. Please visit our return policy page for detailed information.
Do Bio-Synergy supplements have any side effects?
Bio-Synergy supplements are designed to be safe and effective when used as directed. However, as with any supplement, some people may experience side effects. If you experience any adverse effects, stop use immediately and consult a healthcare professional.
How long does it take to see results from Bio-Synergy supplements?
Results can vary based on individual factors like diet, exercise, and overall health. Some may notice benefits immediately, while for others, it might take longer. Consistency and a healthy lifestyle are key to achieving the best results.
Are there any discounts available for buying Bio-Synergy supplements?
We often offer promotions and discounts. Check our website regularly, sign up for our newsletter, or follow us on social media to stay updated on our latest deals.
How long does delivery take?
Delivery is next day in the UK Monday-Thursday and 48-72 hrs at weekends. For international delivery, times will vary but generally within 7 working days
