Tea has naturally contained caffeine for thousands of years.
But if you’ve ever looked at a cup of traditional green tea and thought, I love this, but I need more energy, you’re not alone.
That’s one of the ideas behind Kubo.
We make organic tea with significantly more caffeine than a traditional cup by combining our tea blends with caffeine derived from organic green tea.
Here’s how it works.
Does Green Tea Naturally Have Caffeine?
Yes.
Green tea comes from the Camellia sinensis plant—the same plant used to produce black tea, white tea, and oolong tea.
Caffeine occurs naturally in the tea plant, although the amount that ends up in your cup can vary based on the tea, growing conditions, serving size, water temperature, and brewing time.
Traditional brewed tea generally contains considerably less caffeine than a typical cup of coffee.
Kubo was created to change that.
How Does Kubo Get 140–155 mg of Caffeine?
In addition to the caffeine naturally present in our tea leaves, Kubo blends are infused with caffeine derived from organic green tea.
That brings our finished blends to approximately:
140 mg caffeine per cup in many of our green-tea-based blends.
155 mg caffeine per cup in many of our black-tea-based blends.
Exact caffeine content depends on the Kubo blend you choose.
It’s high-energy tea designed for people who want more from their cup.
Why Not Just Drink an Energy Drink?
You absolutely can.
But sometimes you don’t want a can of something sweet or heavily flavored.
Kubo gives you another choice: brew real organic tea, choose the flavor you actually want, and get serious caffeine without added sugar.
Our teas are:
High Caffeine
Approximately 140–155 mg per cup, depending on the blend.
Zero Sugar
Energy doesn’t have to taste syrupy.
Made with Organic Ingredients
Tea, botanicals, spices, fruits, mushrooms, and functional ingredients vary by blend.
Available Hot or Iced
Your morning energy doesn’t have to look the same every day.
Packed in Plant-Based Tea Bags
A simple brewing ritual without conventional plastic tea bags.
Which High-Caffeine Tea Should I Choose?
That’s the fun part.
If you like bold black tea, start with Earl Grey, Coconut Chai, or Lemon Mango.
If you prefer green tea, try Tropical Green or Japanese Sencha Matcha.
Want something functional? Explore Lion’s Mane Chai, Reishi English Breakfast, or Chaga Citrus & Passion.
And if you’re an iced-tea person, Peach Mango, Raspberry, and Half & Half were made for the fridge and a tall glass of ice.
For maximum get-up-and-go flavor, there’s Energize Yerba Mate—a blend of yerba mate, green tea, guayusa, spearmint, and functional botanicals.
Is 140–155 mg of Caffeine a Lot?
It’s significantly more caffeine than you’ll find in many traditionally brewed teas.
Caffeine tolerance, however, is personal.
The FDA has cited 400 mg of caffeine per day as an amount not generally associated with negative effects for most healthy adults, but sensitivity varies considerably from person to person.
Your total matters, too. Coffee, tea, soda, energy drinks, chocolate, supplements, and some medications can all contribute caffeine throughout the day.
Listen to your body and choose the amount that works for you.
A Different Kind of Tea Ritual
Kubo started with a pretty simple idea:
Why should tea drinkers have to choose between the drink they love and the energy they want?
We don’t think they should.
So we took organic tea, turned up the caffeine, skipped the sugar, and started building blends around flavor and functional ingredients.
The result is tea made for mornings, meetings, workouts, afternoons—and anyone who’s ready to rethink what a cup of tea can do.
Welcome to high-energy tea.
Individual caffeine sensitivity varies. Consider your total daily caffeine intake from all sources. People who are pregnant, breastfeeding, taking certain medications, or who have questions about caffeine intake should consult an appropriate healthcare professional.