Journal

Chart comparing caffeine in coffee, tea and green tea

Does chai have caffeine? Chai tea and chai latt...

Chai is spiced black tea, so it contains caffeine; here are the black tea figures, what is known about chai lattes and how to find caffeine-free chai.

Does chai have caffeine? Chai tea and chai latt...

Chai is spiced black tea, so it contains caffeine; here are the black tea figures, what is known about chai lattes and how to find caffeine-free chai.

Chart of UK caffeine reference amounts

Does caffeine raise blood pressure?

What the British Heart Foundation says about caffeine and blood pressure, how long to wait before a check and how much caffeine is in common drinks.

Does caffeine raise blood pressure?

What the British Heart Foundation says about caffeine and blood pressure, how long to wait before a check and how much caffeine is in common drinks.

Close-up of a caffeine pouch

Caffeine sensitivity: why caffeine affects peop...

Why people react differently to caffeine, the symptoms the FSA lists at high intakes, how sensitivity differs from allergy and the official limits.

Caffeine sensitivity: why caffeine affects peop...

Why people react differently to caffeine, the symptoms the FSA lists at high intakes, how sensitivity differs from allergy and the official limits.

Chart comparing caffeine in a cup of coffee and a caffeine pouch

How much caffeine is in a latte, flat white or ...

Caffeine in lattes, flat whites, cappuccinos, americanos and filter coffee at UK chains, from Starbucks' own guide and the chains' figures compiled by Which?.

How much caffeine is in a latte, flat white or ...

Caffeine in lattes, flat whites, cappuccinos, americanos and filter coffee at UK chains, from Starbucks' own guide and the chains' figures compiled by Which?.

A nicotine-free caffeine pouch held between two fingers

Does Lucozade have caffeine? Lucozade Energy, S...

Which Lucozade drinks contain caffeine, what the UK labels state and how the 150 mg per litre high-caffeine warning rule applies.

Does Lucozade have caffeine? Lucozade Energy, S...

Which Lucozade drinks contain caffeine, what the UK labels state and how the 150 mg per litre high-caffeine warning rule applies.

A can of pouches on a desk by a window

Which fizzy drinks have caffeine? Fanta, Sprite...

A drink-by-drink answer on caffeine in Fanta, Sprite, Irn-Bru, Dr Pepper, Tango, 7UP, Mountain Dew and the colas, using UK labels and makers' figures.

Which fizzy drinks have caffeine? Fanta, Sprite...

A drink-by-drink answer on caffeine in Fanta, Sprite, Irn-Bru, Dr Pepper, Tango, 7UP, Mountain Dew and the colas, using UK labels and makers' figures.

A caffeine pouch in the palm of a hand

Does Pepsi Max have caffeine?

Pepsi Max, regular Pepsi and Pepsi Max Cherry contain caffeine, Pepsi Max No Caffeine does not; here is what the UK labels show and how cola compares.

Does Pepsi Max have caffeine?

Pepsi Max, regular Pepsi and Pepsi Max Cherry contain caffeine, Pepsi Max No Caffeine does not; here is what the UK labels show and how cola compares.

Chart comparing caffeine in a cup of coffee and a caffeine pouch

Caffeine calculator: how much caffeine have you...

Add up your caffeine from coffee, tea, cola, energy drinks, chocolate and pouches and compare it with the UK guidance.

Caffeine calculator: how much caffeine have you...

Add up your caffeine from coffee, tea, cola, energy drinks, chocolate and pouches and compare it with the UK guidance.

Chart comparing caffeine in coffee, tea and green tea

Caffeine while breastfeeding: how much is OK?

UK guidance on caffeine while breastfeeding: the 200 mg daily figure, how caffeine passes into breast milk and lower-caffeine alternatives.

Caffeine while breastfeeding: how much is OK?

UK guidance on caffeine while breastfeeding: the 200 mg daily figure, how caffeine passes into breast milk and lower-caffeine alternatives.

Chart of UK caffeine reference amounts

Caffeine powder: UK safety guidance and facts

What caffeine powder is, what the FSA and FSS say about caffeine supplements, the UK daily limits and what to do if someone has taken too much.

Caffeine powder: UK safety guidance and facts

What caffeine powder is, what the FSA and FSS say about caffeine supplements, the UK daily limits and what to do if someone has taken too much.

Close-up of a caffeine pouch

Caffeine-free tea: herbal teas and decaf tea ex...

Which teas are naturally caffeine-free, how much caffeine is left in decaf tea, and which teas do contain caffeine.

Caffeine-free tea: herbal teas and decaf tea ex...

Which teas are naturally caffeine-free, how much caffeine is left in decaf tea, and which teas do contain caffeine.

Chart comparing caffeine in coffee, tea and green tea

Does green tea have caffeine? Green tea, Earl G...

How much caffeine is in green tea, Earl Grey and everyday black tea such as Yorkshire Tea, compared with coffee.

Does green tea have caffeine? Green tea, Earl G...

How much caffeine is in green tea, Earl Grey and everyday black tea such as Yorkshire Tea, compared with coffee.

A caffeine pouch in the palm of a hand

Does chocolate have caffeine? Hot chocolate, da...

How much caffeine is in hot chocolate and in dark, milk and white chocolate, with NHS, EUFIC and British Nutrition Foundation figures side by side.

Does chocolate have caffeine? Hot chocolate, da...

How much caffeine is in hot chocolate and in dark, milk and white chocolate, with NHS, EUFIC and British Nutrition Foundation figures side by side.

A can of pouches on a desk by a window

Does Coke Zero have caffeine?

Regular Coca-Cola Zero Sugar contains caffeine, the Zero Caffeine version does not; here is what Coca-Cola publishes and how to check the can.

Does Coke Zero have caffeine?

Regular Coca-Cola Zero Sugar contains caffeine, the Zero Caffeine version does not; here is what Coca-Cola publishes and how to check the can.

Chart comparing caffeine in a cup of coffee and a caffeine pouch

How much caffeine is in a cup of coffee?

How much caffeine is in a cup of instant, filter and coffee-shop coffee, using NHS and EUFIC figures, and how many cups reach the UK daily limits.

How much caffeine is in a cup of coffee?

How much caffeine is in a cup of instant, filter and coffee-shop coffee, using NHS and EUFIC figures, and how many cups reach the UK daily limits.

A can of Optimal Native pouches in the pocket of a backpack

Coffee alternatives in the UK: options and caff...

Coffee alternatives compared by caffeine: tea, matcha, decaf, chicory and rooibos, and caffeine pouches.

Coffee alternatives in the UK: options and caff...

Coffee alternatives compared by caffeine: tea, matcha, decaf, chicory and rooibos, and caffeine pouches.

Close-up of a caffeine pouch held between fingertips

Caffeine tablets and caffeine gum: how much caf...

Caffeine tablets commonly contain 50–200 mg each and caffeine gum 50–100 mg per piece. Both count towards the same daily total as coffee.

Caffeine tablets and caffeine gum: how much caf...

Caffeine tablets commonly contain 50–200 mg each and caffeine gum 50–100 mg per piece. Both count towards the same daily total as coffee.

Chart: caffeine per can of energy drink

How much caffeine is in Monster and Red Bull?

A 250 ml Red Bull has 80 mg of caffeine and a 500 ml Monster has 160 mg. Both are 32 mg per 100 ml; sugar-free versions have the same...

How much caffeine is in Monster and Red Bull?

A 250 ml Red Bull has 80 mg of caffeine and a 500 ml Monster has 160 mg. Both are 32 mg per 100 ml; sugar-free versions have the same...

A single pouch held in a hand against a light background

Caffeine-free energy drinks: what's in them ins...

Caffeine-free energy drinks usually rely on B vitamins, electrolytes or taurine. Guarana, yerba mate, green tea and green coffee extracts all contain caffeine.

Caffeine-free energy drinks: what's in them ins...

Caffeine-free energy drinks usually rely on B vitamins, electrolytes or taurine. Guarana, yerba mate, green tea and green coffee extracts all contain caffeine.

Chart: sugar and caffeine in an energy drink compared with a caffeine pouch

Sugar-free energy drinks: what's actually in them

Sugar-free energy drinks swap sugar for sweeteners but usually keep the same caffeine: often 32 mg per 100 ml.

Sugar-free energy drinks: what's actually in them

Sugar-free energy drinks swap sugar for sweeteners but usually keep the same caffeine: often 32 mg per 100 ml.

A white caffeine pouch held between two fingers

How long does caffeine last? Half-life explained

Caffeine has an average half-life of about four hours in healthy adults (range 2–8 hours), so about half of it is still in your body four hours later.

How long does caffeine last? Half-life explained

Caffeine has an average half-life of about four hours in healthy adults (range 2–8 hours), so about half of it is still in your body four hours later.

Chart: caffeine per serving in coffee, espresso, tea and energy drinks

Caffeine withdrawal: symptoms and how long it l...

Caffeine withdrawal symptoms, mainly headache, usually start 12–24 hours after the last caffeine, peak at 20–51 hours and last 2–9 days.

Caffeine withdrawal: symptoms and how long it l...

Caffeine withdrawal symptoms, mainly headache, usually start 12–24 hours after the last caffeine, peak at 20–51 hours and last 2–9 days.

Chart: caffeine reference amounts, including 200 mg a day in pregnancy

Caffeine in pregnancy: UK guidance explained

The NHS advises no more than 200 mg of caffeine a day in pregnancy. How much caffeine is in coffee, tea, cola, energy drinks and chocolate.

Caffeine in pregnancy: UK guidance explained

The NHS advises no more than 200 mg of caffeine a day in pregnancy. How much caffeine is in coffee, tea, cola, energy drinks and chocolate.

Chart: caffeine per can of cola and energy drinks

How much caffeine is in cola? Coke, Diet Coke a...

A can of cola has about 40 mg of caffeine (NHS). Coca-Cola Original Taste 330 ml has 34 mg and Diet Coke 46 mg per can.

How much caffeine is in cola? Coke, Diet Coke a...

A can of cola has about 40 mg of caffeine (NHS). Coca-Cola Original Taste 330 ml has 34 mg and Diet Coke 46 mg per can.

Chart: caffeine in coffee, espresso, black tea and green tea

Decaf coffee: how much caffeine is left?

Decaf coffee is not caffeine-free: a 200 ml cup has about 4 mg of caffeine, compared with about 90 mg in regular filter coffee.

Decaf coffee: how much caffeine is left?

Decaf coffee is not caffeine-free: a 200 ml cup has about 4 mg of caffeine, compared with about 90 mg in regular filter coffee.

A can of Optimal Native pouches on a desk by a window

How much caffeine is in an espresso?

A single espresso has about 80 mg of caffeine, but espressos from 20 coffee shops measured between 51 mg and 322 mg.

How much caffeine is in an espresso?

A single espresso has about 80 mg of caffeine, but espressos from 20 coffee shops measured between 51 mg and 322 mg.

Hand placing a can of Optimal Native pouches on a desk next to a laptop

Caffeine in matcha vs coffee: how much is in each?

Matcha contains about 19–44 mg of caffeine per gram of powder, so a 1–2 g cup has roughly 19–89 mg. A cup of instant coffee has about 100 mg.

Caffeine in matcha vs coffee: how much is in each?

Matcha contains about 19–44 mg of caffeine per gram of powder, so a 1–2 g cup has roughly 19–89 mg. A cup of instant coffee has about 100 mg.

Placing an Optimal Native nicotine-free pouch

Nicotine-free pouches explained: what they are ...

Nicotine-free pouches are small pouches that sit under your upper lip and contain no nicotine and no tobacco.

Nicotine-free pouches explained: what they are ...

Nicotine-free pouches are small pouches that sit under your upper lip and contain no nicotine and no tobacco.

A can of Optimal Native caffeine pouches

What is caffeine snus? Nicotine-free caffeine p...

Caffeine snus is another name for caffeine pouches: small pouches that sit under your upper lip and contain caffeine, with no tobacco and no nicotine.

What is caffeine snus? Nicotine-free caffeine p...

Caffeine snus is another name for caffeine pouches: small pouches that sit under your upper lip and contain caffeine, with no tobacco and no nicotine.

Optimal Native can on a backpack in a gym changing room

Energy drinks and under-16s: the new UK rules e...

England plans to ban the sale of high-caffeine energy drinks to under-16s from April 2027. What the rule covers, which drinks count and what it means for shoppers.

Energy drinks and under-16s: the new UK rules e...

England plans to ban the sale of high-caffeine energy drinks to under-16s from April 2027. What the rule covers, which drinks count and what it means for shoppers.

Optimal Native caffeine pouch cans with pouches

Coffee pouches: what they are and how they comp...

What coffee pouches are, how they differ from caffeine pouches, and how a pouch compares with a cup of coffee on caffeine, sugar and format.

Coffee pouches: what they are and how they comp...

What coffee pouches are, how they differ from caffeine pouches, and how a pouch compares with a cup of coffee on caffeine, sugar and format.

Person placing a caffeine pouch under the upper lip

L-theanine and caffeine: what they are and wher...

What L-theanine and caffeine are, where they are found, how much is in a cup of tea, and how much is in Optimal Native pouches.

L-theanine and caffeine: what they are and wher...

What L-theanine and caffeine are, where they are found, how much is in a cup of tea, and how much is in Optimal Native pouches.

Optimal Native can on a backpack in a gym changing room

Energy drinks with the least caffeine: how to r...

How to find the energy drinks with the least caffeine in UK shops: label rules, can sizes and caffeine-free options.

Energy drinks with the least caffeine: how to r...

How to find the energy drinks with the least caffeine in UK shops: label rules, can sizes and caffeine-free options.

Optimal Native can on a backpack

Caffeine in coffee vs tea vs green tea: how muc...

How much caffeine is in coffee, espresso, black tea and green tea, why it varies, and how caffeine pouches compare.

Caffeine in coffee vs tea vs green tea: how muc...

How much caffeine is in coffee, espresso, black tea and green tea, why it varies, and how caffeine pouches compare.

Optimal Native caffeine pouch cans with pouches

How much caffeine is too much? UK guidance expl...

What the UK food safety agencies say about daily caffeine, single doses and pregnancy, and how to count caffeine from coffee, tea, energy drinks and pouches.

How much caffeine is too much? UK guidance expl...

What the UK food safety agencies say about daily caffeine, single doses and pregnancy, and how to count caffeine from coffee, tea, energy drinks and pouches.

Person placing a caffeine pouch under the upper lip

Caffeine pouches vs energy drinks: sugar, caffe...

How caffeine pouches and energy drinks compare on sugar, caffeine, format and the new UK rules.

Caffeine pouches vs energy drinks: sugar, caffe...

How caffeine pouches and energy drinks compare on sugar, caffeine, format and the new UK rules.

Optimal Native caffeine pouch cans with pouches

Caffeine pouches in the UK: what they are, how ...

Caffeine pouches, caffeine snus, energy pouches: what they are, how much caffeine they contain and how they compare with coffee and energy drinks.

Caffeine pouches in the UK: what they are, how ...

Caffeine pouches, caffeine snus, energy pouches: what they are, how much caffeine they contain and how they compare with coffee and energy drinks.