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What Tea Has the Most Caffeine?

Updated: Apr 12


woman holding a cup of tea

Types of Tea and Caffeine Content

According to Vicony Teas Company there are nine types of tea; green tea, black tea, white tea, yellow tea, Oolong tea, dark tea, Pu Erh tea, scented tea and Herbal tea. We will focus on five of those tea types.

Black Tea

Black tea in general has a higher caffeine content versus all other types of tea. Black to has about 40 to 70 milligrams of caffeine per eight ounces. Compared to eight ounces of coffee having 95 to 200 milligrams of caffeine.


Oolong Tea

Oolong tea is neither black or green tea. It is a tea created through a process which includes withering the plant under strong sun. But first, the leaves are bruised by tossing or shaking them. This initiates the n oxidation process that will give oolong tea leaves their flavor. Oolong tea's caffeine content is around 37 to 55 milligrams of caffeine per eight ounce serving.


Green Tea

Green tea has 35 to 45 milligrams of caffeine per eight ounce serving. Green tea is known for having many health benefits and does not have as much caffeine as black or oolong tea.


White Tea

White tea has the lowest amount of caffeine of all teas with 15 to 30 milligrams per eight ounce serving. White tea is known to be one of the most delicate tea varieties because it is the least processed.


Herbal Tea

Herbal teas like rooibos chamomile, ginger, moringa or peppermint do not contain caffeine. These teas are not made from the leaves of camellia sinensis, the tea plant. They are made instead from dried flowers, leaves, seeds, or roots that are generally caffeine-free. If you are looking for a tea to drink at night and want to sleep, herbal tea would be your best option.

Brands of Tea with High Caffeine Content


HiCAF® Teas by The Republic of Tea

The Republic of Tea has line of tea called HiCAF® . This line of tea has 110 milligrams of caffeine in an eight ounce serving. About the same as a cup of coffee. This tea comes in six varieties; Cinnamon toast black tea, toasted coconut black tea, caramel black tea, Pom-berry black tea, breakfast black tea and gingermint green tea. Link


hicaf tea republic of tea

Zest Tea

Zest Tea claims to be "The most caffeinated tea on the market." Zest Tea has a whopping 135 to 155 milligrams of caffeine in an eight ounce serving, higher than a cup of coffee. A cup of coffee has about 125 milligrams of caffeine per serving. Zest Tea has a large selection to choose from. The tea comes in tea bags, sparkling tea, loose leaf and CBD loose leaf. Link

zest caffeine tea

Fast Lane Tea by Celestial Tea

Fast Lane® high-energy caffeinated tea contains robust black tea leaves from Assam India and the Indonesian island of Java. Celestial tea adds extra caffeine, cola nut and eleuthero to create a strong caffeine loaded tea. Flavored with cinnamon, nutmeg and licorice. Contains 80 to 100 milligrams of caffeine.


celestial seasonings fast lane tea

Brew Dr Uplift Yerba Mate Tea

Yerba mate is not a true tea. It does not come from the Camellia sinensis plant. Yerba mate comes from the naturally caffeinated leaves of a native species of holly tree, Ilex Paraguariensis, found deep in the South American Atlantic rainforest. Brew Dr combines yerba mate, guayusa, and green tea with organic fruit juices to create a natural energy drink. It contains 150 milligrams of caffeine.


Brew Dr Uplift Yerba Mate Tea


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