People sharing drinks with a small group
Four-can packs make the number of portions clear, but four 250ml cans contain 1 litre altogether, compared with 2 litres in four 500ml cans. Consider how much each person would want in one can.
Who is buying the cans?
Adults comparing sugar profiles
Some of the multipacks discussed here are sugar-free; others contain sugar. Check the exact variant rather than assuming that can size or brand tells you its sugar content.
Adults keeping track of caffeine
A per-100ml figure needs to be read alongside can size. Tesco lists 30mg caffeine per 100ml for Monster Ultra, while Sainsbury’s lists 32mg per 100ml for Relentless Origin: that works out to 150mg and 160mg respectively in a 500ml can.
What should you check?
Start with the portion each person would receive, then compare the caffeine and sugar information for that exact can.
| Priority | What to check | Your needs |
|---|---|---|
| Can and pack size | Check both the number of cans and their volume. Four 250ml cans contain 1 litre; four 500ml cans contain 2 litres. | For sharing, I’d rather choose a can size people can finish than judge the pack by its can count alone. |
| Caffeine per can | Multiply the labelled caffeine per 100ml by the can’s volume in hundreds of millilitres. Tesco lists 30mg per 100ml for Monster Ultra, or 150mg per 500ml can; Sainsbury’s lists 32mg per 100ml for Relentless Origin, or 160mg per can. | I want to account for the caffeine in one can alongside any other caffeinated drinks or foods that day. |
| Sugar profile | Read the nutrition panel for the exact variant. Tesco lists 0g sugars per 500ml can for Monster Ultra; Sainsbury’s lists 3.7g sugars per 100ml for Relentless Origin. Sugar content does not indicate caffeine content. | A sugar-free can matters to me, but I still want to check its caffeine separately. |
| Sharing and entry conditions | Check the retailer’s age-verification terms and the particular festival’s current rules on bringing cans into the venue. Sainsbury’s says it does not sell high-caffeine energy drinks to under-16s and may request proof of age on delivery. | Before ordering for a group, I need to know who can receive the delivery and whether the cans can be brought in. |
Mistakes to avoid
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Reading caffeine per 100ml as caffeine per can
The can’s volume changes the amount consumed. Tesco’s Red Bull listing gives 32mg caffeine per 100ml, equivalent to 80mg in its 250ml can; Tesco’s Monster Ultra listing gives 30mg per 100ml, equivalent to 150mg in its 500ml can.
Calculate the amount for the can you plan to drink, and include caffeine from other drinks and foods when planning the day.
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Assuming sugar-free means less caffeine
Tesco lists 0g sugars for a 500ml Monster Ultra can, alongside caffeine at 30mg per 100ml. These are separate label details.
Check the nutrition panel and caffeine warning independently, including when choosing a sugar-free variant.
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Overlooking delivery and venue rules
Sainsbury’s says its high-caffeine energy drinks are not sold to under-16s and that proof of age may be requested on delivery. Festival entry terms are set by the individual event.
Check the retailer’s terms before ordering and the festival’s current rules before packing cans.
Brand and product-line references
These details concern the named multipacks, not every drink made by each brand.
Red Bull
Red Bull Energy Drink 4 x 250ml has four smaller cans, containing 1 litre in total.
- Tesco lists 32mg caffeine per 100ml for this drink, equivalent to 80mg per 250ml can.
- This regular variant contains sugar; check the label rather than confusing it with Red Bull Sugarfree.
Monster
Monster Energy Ultra 4 x 500ml pairs larger cans with a zero-sugar recipe.
- Tesco lists 0g sugars per 500ml can for this Ultra multipack.
- Tesco lists 30mg caffeine per 100ml, equivalent to 150mg in a 500ml can. Check the label on the particular pack you buy.
Relentless
Relentless Origin 4 x 500ml contains 2 litres across four cans.
- The four-can format provides individual 500ml portions for a group.
- Sainsbury’s lists 32mg caffeine and 3.7g sugars per 100ml for Relentless Origin; that is 160mg caffeine in a 500ml can.
Lucozade Alert
Lucozade Alert Original is listed as a four-pack of 500ml cans.
- The Amazon UK product listing states 4g sugar per 100ml for this variant.
- The same listing states 32mg caffeine per 100ml, equivalent to 160mg per 500ml can; it is not sugar-free.
Joybuy multipack options
These options cover smaller four-can portions, larger four-can portions and a 12-can pack for sharing. Check each variant’s label and the festival’s entry rules before deciding what to take.
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Rockstar Blueberry & Pomegranate 12 x 500ml
The 12-can format provides more individual cans for a group than a four-pack. Check the caffeine and sugar information on the cans before distributing them.
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Monster Energy Aussie Style Lemonade 4 x 500ml
Four 500ml cans provide 2 litres in total. Check caffeine per can and the nutrition panel for this lemonade variant rather than applying figures from Monster Ultra.
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Red Bull Energy Drink 4 x 250ml
Four 250ml cans provide smaller individual portions for sharing. Tesco lists 32mg caffeine per 100ml for this regular variant, equivalent to 80mg per can; it contains sugar.
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Red Bull Sugarfree Energy Drink 4 x 250ml
This Sugarfree variant keeps the smaller four-can format. Check its own caffeine label rather than assuming its composition is identical to regular Red Bull.
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Monster Energy Ultra Zero Sugar 4 x 500ml
This zero-sugar four-pack contains 500ml cans. Check the caffeine figure on the particular cans before planning portions; the drink is still labelled high in caffeine.
Common questions
How much caffeine is in a 500ml energy-drink can?
It depends on the drink’s labelled concentration. Tesco lists Monster Ultra at 30mg per 100ml, or 150mg per 500ml can; Sainsbury’s lists Relentless Origin at 32mg per 100ml, or 160mg per can. Calculate the amount for the exact variant you buy.
When might a 250ml can work better for sharing?
Choose a 250ml can when smaller individual portions suit the group. Tesco lists 32mg caffeine per 100ml for regular Red Bull Energy Drink, equivalent to 80mg in its 250ml can; caffeine from other drinks and foods still matters.
Can under-16s receive a high-caffeine energy-drink delivery?
Check the retailer’s policy before ordering. Sainsbury’s says it does not sell high-caffeine energy drinks to under-16s and may ask for proof of age on delivery; that retailer policy should not be assumed to describe every seller’s terms.