Understanding Caffeine in Tea

Understanding Caffeine in Tea, do we need a more balanced way to think about energy, focus and ritual?

Caffeine tends to be framed in extremes. For some, it is essential – ”don’t speak to me before I’ve had my morning coffee”. For others, something to cut out entirely. Tea sits somewhere quieter. It contains caffeine, yet the experience of drinking it often feels more measured, more adaptable, and easier to live with.

That comes down to more than just how much caffeine is in the cup. It is also about how it is delivered, what comes with it, and how your body processes it.

How much caffeine is in tea?

All true teas come from the plant Camellia sinensis, so they naturally contain caffeine. The amount in the cup varies, but guidance from the Tea Advisory Panel places a typical serving of tea at around 50mg of caffeine per cup. That is roughly half the level found in many coffees.

Further reviewed nutrition sources support a broader range. Depending on the type of tea and how it is prepared, a cup can contain anywhere from 20 to 70mg. Coffee tends to sit much higher, often between 90 and 200mg per serving.

These numbers are useful as a guide, though they are not fixed. Tea is particularly sensitive to how it is made. Younger buds carry more caffeine than older leaves. Finer grades release more quickly than whole leaves. An infusion in hotter water will draw out more caffeine than a shorter, gentler steep.

Caffeine is highly water-soluble and heat rapidly speeds up the process. A 3 hour cold brew will result in around half the amount of caffeine in the final cup than a 3 minute steep in boiling water.

In practice, this means the same tea can feel quite different depending on how you brew it. So, if you perhaps want a little less caffeine, try a shorter steep (hot & cold) and keep the leaves for a second dunk.

Why tea often feels different to drink…

Caffeine is the same compound, regardless of whether it comes from tea or coffee. What sets tea apart is the wider composition of the leaf.

Tea naturally contains L-theanine, an amino acid studied for its role in supporting attention and mental clarity. Research published in journals such as Nutrition Reviews and indexed on PubMed has explored how L-theanine interacts with caffeine, with findings suggesting this pairing can promote focus while also encouraging a calmer, more balanced mental state, particularly in the hours after consumption.

Tea also contains polyphenols and other plant compounds that may influence how caffeine is absorbed, contributing to a slower, more gradual release of energy.

Both tea and coffee have long histories of use and are rich in bioactive compounds, each linked to potential health benefits. The most noticeable difference lies in how caffeine is delivered. Coffee typically provides a higher dose more quickly, while tea offers a broader spectrum. From robust breakfast blends to lighter green or white teas, caffeine levels can vary significantly depending on the type and how it’s brewed.

This flexibility makes tea easier to tailor throughout the day.

In simple terms, many people experience:

• coffee as a quicker, sharper lift, sometimes accompanied by jitteriness
• tea as a more steady, sustained sense of alertness

This isn’t because tea caffeine is chemically different but because it is buffered by other plant compounds. There is also some evidence that tea’s polyphenols and structure may modulate how quickly caffeine is absorbed, contributing to a slower, steadier effect

The role of caffeine in the body
Caffeine is well studied and widely understood. In moderate amounts, it can support alertness, concentration and physical performance. Many people also find it lifts mood and improves motivation. Health authorities generally consider up to 400mg per day to be a safe upper level for most healthy adults, with lower recommendations during pregnancy.

At the same time, sensitivity varies. Some people feel unsettled even at lower levels. Sleep can be affected more than expected, especially when caffeine is consumed later in the day. There can also be a gradual build of dependence, with withdrawal symptoms such as headaches or fatigue when intake drops.

Paying attention to how your body responds tends to be more useful than following a fixed rule.

Choosing to reduce or avoid caffeine?

There are plenty of reasons someone might choose to lower their caffeine intake. Sleep quality, anxiety levels, pregnancy, or medical advice can all play a role.

For others, moderate caffeine intake fits comfortably within a balanced routine. Many dietary patterns that include tea are associated with positive health outcomes overall.
Rather than a strict divide, it often becomes a question of timing, quantity and individual response.

Luckily, we have our Decaf Breakfast Blend and Decaf Earl Grey so you don’t need to lose out on flavour. These decaf teas are gently decaffeinated using a natural CO₂ process at source, where the green leaf is treated before it’s made into tea. This method removes caffeine without the use of chemical solvents, helping to preserve the integrity of the leaf and maintain the full depth of flavour in the cup.

Caffeine-free Infusions & Rooibos…

Herbal infusions sit slightly apart. They are not made from Camellia sinensis, which means they contain no caffeine at all ( The exception in our range being Mighty Mate as it contains naturally caffeinated Yerba Mate)

They are often associated with evenings such as The Sleepy Mind, though their role is broader than that. Research suggests that both tea and herbal infusions contribute to hydration in a similar way to water when consumed regularly. Try our quenching Hibiscus if you’re looking at upping your hydration levels.

Caffeine-free blends also open up a different side of tea drinking. They have been used to support relaxation, digestion, or simply offer flavour without stimulation. They allow the ritual to continue, regardless of the time of day.

A more intuitive way to approach tea

Thinking about caffeine in terms of intention can be more useful than focusing on strength alone.
A stronger black tea or matcha can suit the morning. Green tea often works well through the middle of the day, where focus is needed without intensity.

Lighter teas or shorter infusions can take you into the afternoon.

Herbal blends carry things into the evening.

This approach reflects the range that tea naturally offers. It can be shaped around energy levels, mood, and routine without much effort.

A note on individual needs

Research into caffeine and tea continues to evolve, and individual responses vary widely. Factors such as genetics, medication, stress levels and overall diet all play a part.
If you have concerns about how caffeine affects you, or if you have been advised to monitor your intake, it is sensible to speak with a qualified healthcare professional before making significant changes.

Understanding Caffeine in Tea The Takeaway
Tea offers a way to engage with caffeine more flexibly. The range of styles, along with the presence of compounds such as L-theanine, creates a different kind of experience in the cup.
From more stimulating teas through to completely caffeine-free infusions, it becomes possible to build a rhythm that supports both energy and rest across the day.