Famous Chinese Tea

Oolong Tea and Caffeine: What You Need to Know


How much caffeine does Oolong tea contain? Worried about staying awake if you drink Oolong tea at night due to its caffeine content? If you love tea but are concerned about caffeine, what tea should you drink? In response to these questions, we have the following suggestions.

We will take you to learn more about the caffeine content in oolong tea and how to choose oolong tea.


1.How much caffeine does Oolong tea contain?

When it comes to the caffeine content of Oolong tea, the range is quite broad. In an 8-ounce cup of tea, the caffeine content ranges from 16 milligrams to 55 milligrams.

The weakest Oolong tea varieties contain about 16 milligrams of caffeine per serving, while the strongest varieties can have over 55-60 milligrams per cup. Other varieties fall within the range of 30-40 milligrams of caffeine. Generally, Oolong tea tends to have lower caffeine levels due to the use of mature leaves.

Among oolong teas, Dahongpao is an oolong tea with a lower caffeine content, while Fenghuang Dancong is an oolong tea with a higher caffeine content.

2.What is a reasonable caffeine intake?

Oolong tea contains caffeine, and moderate intake can provide alertness. However, it's essential to be mindful of caffeine intake. For healthy adults, a daily caffeine intake is roughly between 300-400 milligrams.

An 8-ounce cup of coffee typically contains about 80-100 milligrams of caffeine, while a cup of Oolong tea contains approximately 30-40 milligrams. Therefore, a healthy adult can drink 6-8 cups of Oolong tea per day without exceeding the recommended caffeine intake limit.

However, for individuals sensitive to caffeine, pregnant women, and children, attention should be paid to caffeine intake. The metabolism of caffeine slows down during pregnancy, leading to its accumulation and potential transfer to the baby through the placenta. Therefore, Oolong tea may be burdensome for pregnant women and is not recommended. For children, those under four years old should avoid caffeine, and for children aged four and above, the recommended intake is approximately 1 milligram per 2.5 kilograms of body weight.

3.What are the effects of caffeine?

Caffeine is a compound known as methylxanthine, and it acts as a stimulant.

Its primary stimulant effect is due to its binding to adenosine receptors in the brain. Adenosine, a byproduct of energy production (ATP), attaches to receptors throughout the day, causing a feeling of tiredness. Because caffeine structurally resembles adenosine, it can replace adenosine on these receptors, alleviating the feeling of fatigue.

Therefore, the beneficial effects of caffeine include alertness, fatigue reduction, and diuretic properties.

4.What harm can excessive caffeine consumption cause?

Excessive caffeine intake can lead to overstimulation and excitement, affecting the nervous system and causing negative effects such as anxiety and nervousness.

It may also result in increased blood pressure and vascular stiffness.

5.How to control caffeine intake during Oolong tea consumption?


If you want to control the caffeine content of oolong tea, then firstly, we recommend that you choose oolong tea with low caffeine content. Secondly, we recommend that you choose loose leaf oolong tea instead of tea bags. The beauty of loose leaf tea is that you can brew it by brewing it. Brewing methods to control caffeine intake in tea.

When it comes to brewing loose leaf tea, you have five tips to control the amount of caffeine you drink:

  • The first is the amount of tea leaves; more tea leaves mean more caffeine, and vice versa.
  • The second is the steeping time; shorter steeping times effectively reduce caffeine intake.
  • The third is lowering the water temperature; caffeine in tea leaves releases more with higher water temperatures. Using 80-degree water to brew tea will result in lower caffeine content than using boiling water. Cold brewing is also an effective method to minimize caffeine release, making it suitable for those sensitive to caffeine.
  • The fifth is rinsing the tea leaves with boiling water before brewing, which can reduce caffeine content by about 50%.

6.Recommended Oolong Tea


Loose leaf oolong tea not only has the benefit of being able to control caffeine intake through the brewing method, but also has many other advantages that make it perfect for a healthy daily drink. If you are new to tea and have never tried oolong tea, then we highly recommend you start with the Tea Sampler. This allows you to taste multiple oolong teas at one time at the lowest cost.

If you are still hesitant about how to buy good oolong tea online, you can try iTeaworld's oolong tea sampler, which contains four classic loose leaf oolong teas: Dahongpao, Tieguanyin, Fenghuang Dancong and Minnan Shuixian. iTeaworld promises to provide the best loose leaf tea rather than low cost tea.

· Da Hong Pao: Da Hong Pao has a rich and smooth taste with a fragrant orchid aroma.

· TieGuanyin: TieGuanyin has a fresh and brisk taste with a quick and lasting sweetness, featuring the unique "Guan Yin Yun" (rhythm of Guanyin).

· Fenghuang Dancong: Fenghuang Dancong, known as the "perfume of teas," offers a rich, mellow, and fresh taste with a long-lasting fragrance.

· Minnan Shuixian: Minnan Shuixian has a sweet, mellow, and fresh taste with a high and lingering aroma.

About iTeaworld’s Oolong Tea Reviews

iTeaworld has been deeply involved in China's tea industry for 15 years and has its own century-old tea garden and tea factory. The founder of iTeaworld loves tea very much and has an in-depth understanding of tea. He has always believed that something as valuable as Chinese tea should be promoted to the world, so that Chinese tea can be loved by the world. So he created the brand iTeaworld. Not only to promote Chinese culture, but also to let people around the world drink real Chinese tea.

At present, people from many countries have drank iTeaworld tea. They will post their true evaluations of the tea on Reddit, Instagram, and Youtube. They can even view the evaluations of iTeaworld tea on some independent blog sites.
Here are some real reviews about iTeaworld’s Oolong Tea

“I’ve had Tieguanyin before but iteaworld stepped it up on quality. Sweet vegetal and creamy notes and covered the entire palate.”
--from Reddit

"According to the package, this tea comes from old trees that are older than 100 years old.
Since I have a full-size package of this tea, I decided to try it first, and boy was I taken aback by the incredibly intense peach aroma.
It made me wonder how they achieved such a strong aroma without adding any additional flavorings!
Until the third steep, following the gongfu style, the tea retained this delightful peach fragrance.
After that, the roasted undertones became more prominent, and personally, I enjoyed the tea slightly less.
Nonetheless, it is a tea that I believe will likely become one of my favorites from this selection."
--from Reddit


If you want a stimulating effect while controlling caffeine intake, substituting Oolong tea for coffee is a good choice. Regardless of the source of caffeine, excessive consumption of tea and coffee can lead to certain adverse effects. In some special cases, such as pregnancy or sensitivity in the stomach, drinking 2-3 cups of Oolong tea per day is suitable.

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