Difference between caffeine in Tea & Coffee

Difference between caffeine in Tea & Coffee

A Cup of Tea or Coffee: What’s the Difference? 

Do you ever find yourself debating whether to make a cup of coffee or tea? You know both will give you a caffeine boost, but do you know which one is better for your health? As a Tea sommelier and someone who gave up coffee 15 years ago, this has been a question I have come back to time and time again and often get asked.  

In this blog post, we’ll explore the differences between caffeine in tea and coffee and help you make an informed decision about which caffeinated beverage to choose.  

 What is caffeine?  

Caffeine is a stimulant found in many plants, including tea and coffee. It has been used as a stimulant for centuries. Caffeine is a central nervous system stimulant, meaning that it can temporarily improve alertness and reduce fatigue. 

Caffeine works by blocking the action of adenosine, a neurotransmitter that promotes sleep and suppresses arousal. This can cause increased activity in the brain and the release of other neurotransmitters like dopamine and norepinephrine, which can lead to feelings of increased energy, focus, and productivity. 

While caffeine can have some benefits in moderation, excessive consumption can lead to negative effects like jitteriness, anxiety, and insomnia. 

But how does it differ between these two popular beverages? Let’s take a look.  

The Amount of Caffeine in Tea vs Coffee 

While both tea and coffee contain caffeine, there are some differences in the way that caffeine is present and how it affects the body. 

  1. Caffeine content: Generally, coffee contains more caffeine than tea. A typical 8-ounce cup of brewed coffee can contain anywhere from 70 to 140 milligrams of caffeine, while an 8-ounce cup of black tea contains around 25 to 48 milligrams of caffeine. 
  1. Absorption rate: Caffeine in coffee is absorbed more quickly than caffeine in tea. This means that the effects of coffee, including increased energy and alertness, can be felt more quickly than with tea. 
  1. Other compounds: Tea contains other compounds like L-theanine, an amino acid that can promote relaxation and reduce stress. These compounds can counteract some of the negative effects of caffeine, such as jitters or anxiety. Coffee, on the other hand, does not contain L-theanine, but it does contain other beneficial compounds like antioxidants. 

Caffeine in Tea 

The caffeine content in tea can vary depending on several factors, such as the type of tea, the brewing time and temperature, and the quality of the tea leaves. Here is a general comparison of caffeine content in different types of tea: 

  1. Black tea: Black tea typically contains the most caffeine among all tea types. An 8-ounce cup of black tea can contain anywhere from 25 to 48 milligrams of caffeine, depending on factors such as the brewing time and temperature. 
  1. Green tea: Green tea contains less caffeine than black tea, but still has a moderate amount. An 8-ounce cup of green tea can contain anywhere from 20 to 30 milligrams of caffeine. 
  1. Oolong tea: Oolong tea is a partially oxidized tea, which can have varying caffeine levels depending on the processing method. Generally, oolong tea contains less caffeine than black tea, but more than green tea. 
  1. White tea: White tea is the least processed tea and typically contains the least amount of caffeine. An 8-ounce cup of white tea can contain anywhere from 15 to 20 milligrams of caffeine. 

Caffeine in Coffee  

Caffeine content in coffee can vary depending on a number of factors, including the type of coffee, brewing method, and serving size. Here is a general comparison of caffeine content in different types of coffee: 

  1. Espresso: Espresso is a concentrated coffee beverage that is typically served in small, 1-2 ounce servings. Despite its small size, espresso contains a relatively high amount of caffeine per ounce compared to other coffee types. An 1-ounce shot of espresso typically contains around 40-75 milligrams of caffeine. 
  1. Drip coffee: Drip coffee is a brewed coffee beverage that is typically made by steeping coffee grounds in hot water using a coffee maker. The caffeine content in drip coffee can vary depending on the type of coffee beans used, the brewing method, and the serving size. A standard 8-ounce cup of drip coffee can contain anywhere from 70 to 140 milligrams of caffeine. 
  1. Cold brew coffee: Cold brew coffee is made by steeping coffee grounds in cold water for an extended period of time, usually 12-24 hours. The result is a smooth and less acidic coffee beverage that typically contains less caffeine per serving than drip coffee. An 8-ounce cup of cold brew coffee typically contains around 50-100 milligrams of caffeine. 
  1. Instant coffee: Instant coffee is a type of coffee that is made by drying and processing coffee beans into a powder. The caffeine content in instant coffee can vary depending on the brand and serving size, but generally contains less caffeine per serving than drip coffee. An 8-ounce cup of instant coffee typically contains around 60-80 milligrams of caffeine.  

The Health Benefits & Risks Associated with Caffeine Intake 

 While both beverages contain some amount of caffeine, they also have their own unique health benefits and risks associated with their consumption.  

Tea contains polyphenols—compounds that act as antioxidants—which can help reduce inflammation and improve heart health.  

Coffee also contains beneficial compounds such as chlorogenic acid—an antioxidant thought to help protect against diabetes—and magnesium—a mineral important for muscle relaxation and energy production.  

As for risks associated with drinking caffeinated drinks, research suggests that too much may increase anxiety levels or disrupt sleep patterns. It's important to remember that everyone's tolerance for caffeine differs; so it’s best to monitor the impact on your own health and wellbeing.  


Ultimately, deciding whether to drink coffee or tea comes down to personal preference; however, if you are looking for an alternative to coffee that still offers some form of stimulation without the extra dose of caffeine then try herbal teas such as Mother Cuppa which are completely caffeine free and packed full of antioxidants. https://mothercuppatea.com/ 


And if you do decide to drink caffeinated beverages regularly then just be sure to monitor your intake so that it does not interfere with your sleeping pattern or cause any adverse effects on your overall health.

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