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Rockstar Original Energy Drink: calories, sugar and caffeine by serving
A can/bottle (500ml) of Rockstar Original Energy Drink contains 255 kcal, 61g of sugar and 160mg of caffeine.
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Sugar and caffeine by serving
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Contains sweeteners — not the same as no additivesThis drink uses in place of sugar. Low sugar does not mean nutritionally neutral. WHO 2023 guidance advises against using sweetener-containing drinks as a health strategy.
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Nutrition by serving
Nutrition by serving size: Rockstar Original Energy Drink
Serving
Calories
Sugar
Caffeine
Can/Bottle (500ml)
255 kcal
61g
160mg
Sugar highlighted in amber above 33% of adult daily free sugar limit (30g), red above 75%. Caffeine highlighted in amber above 25% of adult daily limit (400mg), red above 50%.
Rockstar Original Energy Drink contains 51 kcal, 12.2g of carbohydrate (12.2g sugar), 32mg of caffeine and 0.13g of salt per 100ml.
Rockstar Original contains 12.2g of sugar per 100ml — the highest of any mainstream UK energy drink — and 61g of sugar in a 500ml can, more than double the adult daily free sugar limit. The guarana seed extract provides a secondary caffeine source alongside the added caffeine, though the total caffeine is standardised at 32mg per 100ml for labelling purposes.
UK Sugar Tax (SDIL)
Sugar Tax (SDIL)
Soft Drinks Industry Levy (upper rate: drinks above 8g sugar per 100ml). The manufacturer pays £0.24 per litre to HMRC.
Sugar
Rockstar Original Energy Drink contains 12.2g of sugar per 100ml, placing it in the upper levy band under the Soft Drinks Industry Levy. A can/bottle (500ml) delivers 61g of sugar, 203% of the adult daily free sugar limit.
Caffeine
Rockstar Original Energy Drink contains 32mg of caffeine per 100ml. A single can/bottle (500ml) delivers 160mg of caffeine, 40% of the adult daily limit (400mg). Drinks above 150mg of caffeine per litre must carry a 'high caffeine content' warning under UK law.
High-caffeine energy drinks are not recommended for children under 16, pregnant women or individuals sensitive to caffeine. The NHS advises pregnant women to limit total caffeine intake to 200mg per day from all sources.
What is in it
Energy drink
Carbonated water, sugar, citric acid, taurine, sodium citrate, caffeine, panax ginseng extract, guarana seed extract, inositol, colour (caramel E150d), niacin, pantothenic acid, B6, B12. A 500ml can contains 160mg caffeine and 61g of sugar.
Frequently asked questions
Can/Bottle (500ml): 255 kcal.
Can/Bottle (500ml): 61g of sugar (203% of the adult daily free sugar limit).
Can/Bottle (500ml): 160mg of caffeine (40% of the adult daily limit of 400mg).
Rockstar Original Energy Drink is subject to the Soft Drinks Industry Levy at the upper rate. The manufacturer pays £0.24 per litre to HMRC.
Rockstar Original Energy Drink is not recommended for children under 16 due to its high caffeine content (32mg per 100ml).
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Nutrition information from official brand UK nutrition panels, Coca-Cola GB nutrition pages, UK retailer product listings, and independent nutritionist analyses. Figures per 100ml; per-serving values are proportional estimates. Sugar Tax (SDIL) status based on UK sugar content thresholds at time of writing — brands may reformulate. Caffeine figures from EU/UK mandatory nutrition labelling. Reference intakes: EU Reference Intakes for an average adult (2,000 kcal). Fruit juice is subject to the SDIL if it contains added sugar; pure juices exempt. For guidance only, not medical advice.
