Quick answer: for most healthy adults, an energy drink now and then isn't harmful. The problems come from three things: too much sugar, too much caffeine in a day, and the wrong people drinking them. Get those right and the can matters far less than the label suggests.
What actually makes an energy drink bad for you
| The issue | Why it matters | What to look for |
|---|---|---|
| Sugar | Adults should have no more than 30g of free sugars a day. A 500ml full-sugar can can hit 55g on its own. | Under 5g a can |
| Caffeine per day | UK guidance is up to 400mg a day for healthy adults, and up to 200mg in one go. | The dose per can, clearly stated |
| How many cans | Two or three big cans plus coffee can take you past 400mg. | A daily limit on the label |
| Who drinks them | Not suitable for children, or pregnant or breastfeeding women. | A "high caffeine content" warning |
Signs you've had too much caffeine
- Feeling jittery, restless or anxious.
- A fast or pounding heartbeat.
- Trouble getting to sleep.
- Headaches or an upset stomach.
If that's you, cut back and count every source: coffee, tea, cola and cans. If coffee gives you the jitters, read energy drinks without jitters.
The under-16 ban
England plans to ban the sale of drinks with more than 150mg of caffeine per litre to under-16s, in shops, vending machines and online, from April 2027, subject to Parliament. Most energy drinks, PÜRCHARGE included, are above that line. They're made for adults.
How to pick a better one
- Under 5g of sugar a can. See our best low sugar energy drinks.
- A moderate caffeine dose, roughly 75 to 150mg a can.
- A short ingredients list you can read without searching.
- Still rather than fizzy, if fizz leaves you bloated.
Where PÜRCHARGE fits
We make it, so judge for yourself. It's a still energy water with 125mg of caffeine from green coffee, 3.8g of sugar from fruit juice, stevia, green tea extract (a natural source of L-theanine), enXtra®, rhodiola, Panax ginseng, electrolytes and nine vitamins. Caffeine contributes to increased alertness and improved concentration. Not for under-16s, pregnant or breastfeeding women. Max two cans a day.
Compare the options in best healthy energy drinks UK, or shop PÜRCHARGE.
FAQs
Is one energy drink a day bad for you?
For most healthy adults, one can a day is fine if it's low in sugar and your total caffeine stays under 400mg. A full-sugar can every day is a different story.
Are sugar-free energy drinks better for you?
They cut the sugar, which is the biggest issue. The caffeine is still there, so the daily limit still applies.
Why are energy drinks being banned for under-16s?
High-caffeine drinks aren't recommended for children. The planned ban in England makes the existing guidance law for drinks over 150mg of caffeine per litre.
