Can kids drink decaffeinated tea or coffee?

Can Kids Drink Decaffeinated Tea or Coffee?

ByI Love Decaf

A parent’s honest, evidence-based guide

Your eight-year-old has just spotted you cradling a mug and pulled the exact same face they use for the biscuit tin, the iPad and anything belonging to their sibling. Can they have some? You drink decaf. You know there is barely any caffeine in it. And yet somewhere in the back of your mind, a small voice is asking whether introducing your child to coffee, even the defanged version, is the first step on a very slippery slope.

That voice is doing its job. The better news is that once you have the actual numbers in front of you, decaf tea and decaf coffee look very different from the drinks most parents quietly worry about, which are almost always the sugary, fizzy, neon-coloured ones that nobody ever thinks of as a caffeine delivery system until it is 11pm and someone small is doing laps of the landing.

The short answer

For older children and teenagers, a small cup of decaf tea or decaf coffee is, on the caffeine front, a non-event. A standard cup of brewed decaf coffee contains roughly 2 to 15 mg of caffeine. A mug of regular filter coffee contains around 95 to 140 mg. A can of cola sits at 30 to 40 mg. Decaf, in other words, is not the one you need to worry about.

Official guidance across the UK, Europe and North America is consistent: minimise caffeine for children where you sensibly can, and keep energy drinks away from them altogether. Decaf, used with common sense, sits very comfortably within that guidance.

What the official guidance actually says

The UK does not set a specific daily caffeine limit for children, but the Food Standards Agency advises that children should only consume caffeine in moderation, pointing to the European Food Safety Authority’s assessment. EFSA concluded that a daily intake of up to 3 mg of caffeine per kilogram of body weight raises no safety concern for children and adolescents.

In practical terms, that works out to roughly:

  • Around 45 mg a day for a toddler weighing around 15 kg
  • Around 75 mg a day for a primary-school child weighing around 25 kg
  • Around 140 mg a day for an 11 to 12 year old of average UK weight

The American Academy of Pediatrics recommends that children under 12 avoid caffeine entirely and that teenagers keep to no more than 100 mg a day. Canadian guidance suggests 45 mg for 4 to 6 year olds, 62 mg for 7 to 9 year olds and 85 mg for 10 to 12 year olds.

Whichever set of numbers you use, a small cup of decaf does not come close to moving the needle. You are not handing them a triple espresso. You are not even handing them a Kit Kat.

How much caffeine is actually in decaf?

Under UK and EU law, a coffee labelled decaffeinated must have at least 99.9 per cent of its caffeine removed. In practice, a standard 240 ml cup of brewed decaf coffee contains somewhere between 2 and 15 mg of caffeine, with most cups at the lower end. A cup of decaf black tea contains roughly 2 to 5 mg. Herbal and fruit infusions, which are naturally caffeine-free, contain absolutely none, because they were never caffeinated in the first place and have nothing to apologise for.

Here is the rough caffeine content of common drinks and foods that show up in family life:

  • Regular filter coffee, 240 ml mug: about 95 to 140 mg
  • Regular black tea, 240 ml mug: about 40 to 50 mg
  • Cola, 330 ml can: about 30 to 40 mg
  • Dark chocolate, 30 g at 70 per cent cocoa: about 20 to 30 mg
  • Milk chocolate bar, 50 g: under 10 mg
  • Decaf coffee, 240 ml mug: about 2 to 15 mg
  • Decaf tea, 240 ml mug: about 2 to 5 mg
  • Rooibos, peppermint, chamomile and fruit infusions: zero mg

A chocolate bar in the after-school lunchbox will usually deliver more caffeine than a mug of decaf. A single can of cola delivers several times more. The bedtime chaos you were attributing to a sip of your coffee is almost certainly the Freddo they ate on the bus.

Why size matters more than age

Calpol dosing is worked out by age because age is a rough proxy for body weight, and body weight is what actually matters when calculating how much of anything a small body can handle. Caffeine works the same way. A 12 year old weighing 45 kg can tolerate considerably more than a 5 year old weighing 18 kg, even though neither of them needs caffeine in any meaningful sense and both of them will absolutely claim they do.

If you are inclined to let an older child have the occasional small cup of decaf tea with you, the risk from the caffeine itself is essentially theoretical. For a younger child, the honest answer is that there is no nutritional reason to introduce tea or coffee of any kind, and there are better options: water, milk, a fruit infusion, a cup of rooibos, something that does not require a parental risk assessment at half past seven in the evening.

The real caffeine traps for children

Parents who spend time worrying about a sip of decaf often miss where the caffeine actually lives in a child’s day. The main concern is not hot drinks. It is high-caffeine energy drinks, which are so concentrated that a single 500 ml can contains 160 to 200 mg of caffeine, more than the entire safe daily intake for an 11 year old, dressed up in a can that looks like it was designed specifically to appeal to 11 year olds. Which it was.

That is why the UK government has moved to ban the sale of high-caffeine energy drinks to children under 16, with major UK supermarkets and convenience stores already declining to sell them voluntarily since 2018.

The other less obvious sources are:

  • Cola, which adds up quickly if it is the default mealtime drink
  • Chocolate, especially dark chocolate and hot chocolate made with real cocoa
  • Iced tea and bottled tea drinks, which vary wildly by brand
  • Some over-the-counter cold and flu medicines for children
  • Coffee-flavoured ice cream, yoghurts and desserts

If your child is doing circuits of the bedroom at 10pm, conduct a thorough debrief of the afternoon’s snack situation before blaming the half-cup of decaf they had with you at teatime.

What about decaf tea specifically?

Decaf black tea, decaf green tea and decaf Earl Grey all contain tiny residual amounts of caffeine, generally between 2 and 5 mg per cup. Herbal, fruit and rooibos teas contain no caffeine at all because they never had any. Rooibos in particular is an excellent choice for a child who wants a warm drink that feels properly grown-up without actually being a grown-up drink in any pharmacological sense.

A warm mug of rooibos, peppermint, chamomile or a fruit blend is a perfectly sensible way to bring a child into the ritual of a hot drink without any caffeine arithmetic or bedtime consequences whatsoever.

A sensible parent’s rule of thumb

  • Under 12: skip caffeinated drinks including regular tea and coffee. An occasional sip of decaf from your mug is fine, but there is no reason to make it a regular habit. Decaf fruit infusions and rooibos are the better everyday choice, and they will not stage a revolt at 9pm.
  • 12 and up: decaf tea or decaf coffee in normal cup sizes is, on the caffeine front, genuinely nothing to worry about. Keep an eye on total caffeine from all sources across the day, with energy drinks firmly off the menu.
  • Nobody under 16 should be drinking high-caffeine energy drinks. UK supermarkets already agree, and so does every parent who has lived through the consequences.

Frequently asked questions

Is decaf coffee safe for a 10 year old?

The caffeine in a cup of decaf, typically 2 to 15 mg, sits well within the 3 mg per kilogram threshold EFSA considers safe for children. For a 10 year old, a small cup of decaf is not a safety concern. Whether it is a habit worth building is a separate parenting question that only you can answer, ideally while drinking a decaf in peace.

How much caffeine is in a cup of decaf tea?

Decaf black tea usually contains 2 to 5 mg of caffeine per 240 ml cup. Herbal and fruit infusions are naturally caffeine-free. Rooibos contains zero caffeine and zero drama.

Can my child drink decaf before bed?

Yes. The caffeine levels are too low to interfere with sleep in most children. Whatever is actually keeping them up, it almost certainly has a foil wrapper and was consumed on the way home from school.

Is it true that decaf still has a lot of caffeine?

No. UK and EU regulations require at least 99.9 per cent of the caffeine to be removed. A cup of decaf contains a fraction of what a regular cup contains. Anyone telling you otherwise is probably also worried about wi-fi.

What is the difference between decaf tea and herbal tea for children?

Decaf tea is made from real tea leaves with the caffeine removed, leaving a tiny residual amount. Herbal and fruit infusions such as peppermint, chamomile, rooibos and fruit blends are made from plants that never contained caffeine and are completely caffeine-free. They are also, it must be said, considerably more exciting in the flavour department.

The bottom line

Decaf tea and decaf coffee are, for practical purposes, a non-issue where children are concerned. The caffeine numbers are trivial next to the things children already eat and drink without anyone blinking. The real conversation about children and caffeine is about energy drinks, cola and the hot chocolate they sneak on the way home from school while maintaining complete plausible deniability.

If you are drinking decaf yourself, you have already done the hard work. Everything else is sensible parenting, a firm line on energy drinks and perhaps a cup of rooibos so the small person at your elbow feels properly included in the ritual without anyone paying for it at bedtime.

Browse the full I Love Decaf range of decaf coffee, decaf tea and naturally caffeine-free herbal and fruit infusions.

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