Is there Caffeine in Green Tea?

green tea plantation

Green tea is one of the most popular hot beverages in the world. It’s great taste and array of health benefits make it a popular drink to consume.

People have been drinking green tea for centuries but it’s only in modern times that we have seen the effects green tea can have on us.

Scientists can analyse the compounds and chemicals that are contained within green tea. 

One compound that has been studied in depth is caffeine. 

People often wonder if green tea is a loose leaf tea that contains caffeine and if it does how much exactly?

In this post, we will answer that very question and dive a little deeper into caffeine and its relationship with green tea. 


Does Green Tea Have Caffeine?

Yes, green tea does contain caffeine, although the amount is generally lower compared to black tea and coffee. 

The caffeine content in green tea can vary depending on factors such as the type of tea, brewing time, and water temperature. 

Green tea also contains other compounds, such as L-theanine, which can have a calming effect and mitigate some of the jitteriness associated with caffeine. 

The combination of caffeine and L-theanine in green tea is often credited with providing a more balanced and sustained energy boost compared to other caffeinated beverages. 

It’s important for individuals sensitive to caffeine to be mindful of their green tea consumption, and if necessary, opt for decaffeinated varieties.

green tea brewed in glass mug


How Much Caffeine Is in a Cup of Green Tea?

The caffeine content in a cup of green tea can vary based on several factors, including the type of tea, the brewing method, and the serving size.

On average, a cup of green tea contains approximately 20 to 45 milligrams of caffeine. 

However, these values are general estimates, and actual caffeine levels may fall outside this range depending on specific circumstances.

Brewing time and water temperature also play a role. Longer steeping times and higher water temperatures can extract more caffeine from the tea leaves. 

Conversely, shorter brewing times or cooler water may result in a milder cup with lower caffeine levels.

Also how the green tea is presented can have an effect on the caffeine levels as bagged tea tends to be more caffeinated than loose leaf tea.

green tea plant closeup


Types of Green Tea and Their Caffeine Levels

Green tea comes in various types, each with its distinct flavour profile, processing methods, and caffeine levels. 

These include:

  • Sencha – is one of the most popular green teas in Japan, known for its bright green colour and grassy flavour. It has a moderate amount of caffeine with around 20-30 milligrams of caffeine per average-sized cup.
  • Matcha a powdered green tea used in traditional Japanese tea ceremonies. It has a vibrant green colour and a rich, umami flavour. Due to the consumption of the whole tea leaf, matcha contains more caffeine, averaging around 35-70 milligrams per serving.
  • Dragon Well (Longjing) – a renowned Chinese green tea, Dragon Well is pan-fired, resulting in a flat, smooth leaf with a nutty and sweet taste. Similar to Sencha, Dragon Well contains approximately 20-30 milligrams of caffeine per cup.
  • Gunpowderis tightly rolled into small pellets, resembling gunpowder, and has a bold, slightly smoky flavour. The tightly rolled leaves may release more caffeine, with levels ranging from 30-40 milligrams per cup.
  • Gyokuro – a high-quality Japanese green tea shaded from the sun before harvest, resulting in a sweet and complex flavour. Gyokuro’s shading process increases its caffeine content, with levels around 35-50 milligrams per cup.


What is the Healthiest Caffeinated Tea?

Determining the healthiest caffeinated tea depends on various factors, including individual health goals and preferences. 

Green tea is often regarded as one of the healthiest options due to its high levels of antioxidants, particularly catechins, which have been linked to numerous health benefits, including improved heart health and potential cancer prevention. 

Matcha tea, a powdered form of green tea, is also gaining popularity for its concentrated nutrient content. 

White tea, minimally processed and delicate in flavour, is another nutritious choice, as it retains a higher amount of antioxidants compared to more processed teas. 

Herbal teas such as peppermint or chamomile, though typically caffeine-free, are popular for their health-promoting properties. 

The healthiest caffeinated tea really depends on your specific health needs and taste preferences. 

matcha green tea drink collection


How Much Caffeine Should I Consume In a Day?

The ideal daily caffeine intake varies from person to person, influenced by factors such as individual sensitivity, overall health and lifestyle. 

According to general guidelines, moderate caffeine consumption is considered safe for most adults, typically ranging between 200 to 400 milligrams per day

This equates to roughly one to two cups of brewed coffee or two to four cups of green tea, depending on the strength and brewing method. 

It’s crucial to be mindful of other sources of caffeine, such as energy drinks, fizzy drinks, and certain medications, as these can contribute to the overall daily intake.

Excessive caffeine consumption can lead to side effects like: 

  • Insomnia.
  • Jitteriness.
  • Increased heart rate. 
  • Dizziness.
  • Tremors.

If you’re pregnant or have a particular health condition you may need to limit your caffeine intake further.

Check out our guide to the best energising teas.


Choose your Green Loose Leaf Tea

Although green tea does contain caffeine there are many factors that play a part in the level of caffeine present.

Green tea should be enjoyed in moderation like most beverages that contain caffeine.

It’s perfectly safe to drink green tea, just as long as you’re mindful of the caffeine it contains and that you don’t drink excessive amounts.

At Leaf Tea, we have a wide variety of green teas available for you to enjoy.

These vary in health benefits and caffeine content so make sure to browse our full library and order one best suited to your needs.

Contact us for more information on any of our loose-leaf teas.