A cozy black tea blended with warm cinnamon and crisp apple, delivering 150 mg of natural caffeine for steady morning energy and clear focus without jitters.
If you read the label before your first sip, Zest is made for you. Built with transparent, functional ingredients and no unnecessary additives.
Restores what your body needs for energy that lasts
Natural tea-derived caffeine and L-Theanine support sustained energy and mental clarity throughout your demanding days.
Coffee-level caffeine, tea-level calm
Each serving delivers 150 mg of natural caffeine alongside L-Theanine to help promote focused energy with a smoother feel and fewer jitters than caffeine alone.
Gentle on your digestive system
Unlike coffee's harsh acids, Zest Tea is easy on your stomach. No reflux, no discomfort, just reliable performance.
Powered by thoughtfully selected ingredients
If you read the label before your first sip, Zest is made for you. Built with transparent, functional ingredients and no unnecessary additives.
Restores what your body needs for energy that lasts
Natural tea-derived caffeine and L-Theanine support sustained energy and mental clarity throughout your demanding days.
Coffee-level caffeine, tea-level calm
Each serving delivers 150 mg of natural caffeine alongside L-Theanine to help promote focused energy with a smoother feel and fewer jitters than caffeine alone.
Gentle on your digestive system
Unlike coffee's harsh acids, Zest Tea is easy on your stomach. No reflux, no discomfort, just reliable performance.
*Based on customer-reported experiences and clinical studies on caffeine + L-Theanine. Individual results may vary. Zest is not intended to diagnose, treat, cure, or prevent any disease.
Microplastic Free
Plant Fiber Teabag
GMO free
Vegan
Zero Calories
Keto Diet
How We Stack Up
Caffeine levels per cup:
Reg. Green Tea
35mg
Reg. Black Tea
50mg
Coffee
120mg
Zest Green Tea
135mg
Zest Black Tea
150mg
Feel the synergy
Coffee-level energy. Better performance. Fraction of the cost. Natural ingredients. This is the smarter choice.
Coffee/Energy drinks
97%
Would recommend Zest to their friends.
94%
Say Zest boosts their energy
81%
Say Zest helps them stay focused without the jitters or crash.
98%
Say they enjoy the flavor
How L-Theanine Makes Caffeine Better
Clinical studies have shown that caffeine + L-Theanine improves attention, accuracy, and cognitive performance better than caffeine alone. The combination also helps to reduce the jitters, crash, and anxiety commonly associated with caffeine consumption.
US VS THEM
Not all energy sources work the same. Zest is built for smooth, focused days.
Energy Feel
Focus
Jitters / Anxiety
Crash
Energy Duration
Sugar
Artificial Ingredients
Stomach Friendly
Best For
Zest Energy Tea
Smooth & steady
Calm, clear focus
None (L-Theanine)
6–8 hours
0 g
Sustained Focus
Coffee
Spike → crash
Wired
Common
Afternoon crash
2–4 hours
0 g
Acidic
Quick wake-up
Energy Drinks
Spike → hard crash
Overstimulated
Very common
Severe crash
1–3 hours
Often 20–40 g
Often present
Often harsh
Short bursts
Regular Tea
Mild & short
Light
Rare
Fades quickly
1–3 hours
0 g
Gentle
Light energy
What's Inside Your Energy Tea?
Feel the difference a tea supported by science-backed ingredients can make. Scroll on the ingredients below to learn more about the benefits behind each one.
Natural Caffeine
150mg of Sustained Energy
Natural caffeine from premium black and green tea leaves delivers coffee-equivalent energy with smoother delivery and longer duration. Unlike synthetic caffeine powder, tea-based caffeine releases gradually for sustained alertness without harsh spikes or crashes.
Benefits:
Sustained Energy
Enhanced Focus
8-12 Hour Duration
Did you know?
Tea-based caffeine is metabolized more gradually than coffee's concentrated form, providing smoother energy delivery. When combined with L-Theanine, it produces optimal cognitive performance without negative side effects.
L-Theanine
For calm focus
L-Theanine is an amino acid naturally found in tea that promotes relaxed alertness without sedation. Clinical research proves it counteracts caffeine's jittery effects while enhancing cognitive performance, attention, and accuracy.
Benefits:
Eliminates Jitters
Enhanced Focus
Reduces Anxiety
Did you know?
Multiple peer-reviewed studies show that caffeine + L-Theanine together improves cognitive performance better than caffeine alone.
Our foundation is premium black and green tea leaves from organic farms in India, Sri Lanka, and China. Orthodox processing preserves maximum flavor and beneficial compounds including EGCG (epigallocatechin gallate) and theaflavins.
Benefits:
Powerful Antioxidants
Supports Cardiovascular Health
Cellular Protection
Did you know?
Tea is the second most consumed beverage globally (after water) and has been used for thousands of years for both enjoyment and health benefits. Studies show regular tea consumption supports long-term cognitive health and metabolic function.
Natural Flavors & Botanicals
Real fruit extracts, zero artificial ingredients
Every flavor comes from real sources: blueberries, pears, pomegranate, mint, cinnamon, and apple. We use steam distillation and cold-press extraction to capture authentic flavor—never artificial flavoring compounds or synthetic sweeteners.
Benefits:
Genuine Taste
No Artificial Ingredients
0 Calories, 0 Sugar
Did you know?
"Natural flavors" legally means the flavor is derived from real plant or animal sources (we use only plant sources). This is completely different from "artificial flavors" which are created from synthetic chemicals in labs.
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See Why They're Obsessed
Blue Lady tea is delicious!!
Gets me just what i need out of coffee but WAY less acidic and no sugary additives needed! This product saved my stomach lining!
AJ Harrison.
Verified Customer
Caffeine without the coffee jitters and upset stomach
Stephanie.
Verified Customer
I used to be a huge coffee drinker, but the acidity started to get my stomach upset. I tried Zest Tea hoping to enjoy a morning caffeine boost. I LOVE it.
Philtra.
Verified Customer
We are now totally addicted!
Coffee makes my stomach hurt and I get jittery from it. Zest smells great and tastes great while delivering steady energy all day with no jitters and no crash
Cassandra.
Verified Customer
I have more energy in the full 24-hour-day…. Absolutely no jitters OR heart palpitations
HOW DO YOUR HIGH CAFFEINE TEAS REDUCE THE JITTERS AND CRASH?
Our high caffeine teas are packed with amino acids, including L-Theanine, which studies show helps moderate caffeine’s effects.
HOW MUCH CAFFEINE IS IN ZEST HIGH CAFFEINE TEAS?
Our high caffeine teas range between 135 and 150mg of natural caffeine per serving, depending on the flavor.
IS IT REALLY THE MOST CAFFEINATED TEA ON THE MARKET?
As far as we know, yes. And by quite a margin. Zest high caffeine teas have about 3x the caffeine of normal tea, or about as much caffeine as a regular cup of joe.
CAN THE LEVEL OF CAFFEINE IN ZEST HIGH CAFFEINE TEAS BE HARMFUL?
Up to 400mg of caffeine per day is generally considered safe. With 120-150mg per serving, Zest’s high caffeine teas are comparable to a strong cup of coffee.
HOW DO YOU INCREASE THE CAFFEINE LEVELS?
We have developed an innovative proprietary blending method that enhances the caffeine levels. The extra caffeine comes from natural tea extracts. The process and ingredients used are natural.
THE TEA IS WHITE, IS THAT MOLD?
Tea in its natural form isn’t as caffeinated as we’d like it to be, so we developed a way to add more caffeine to our blends using natural tea extracts. A common side effect during this process is the whitening of the tea.
DO ZEST TEA BAGS CONTAIN ANY PLASTICS/MICRO-PLASTICS?
Despite the look, our tea bags are made of a plant-fiber material that is compostable and does not contain plastics/micro-plastics.
ARE YOUR PRODUCTS SUGAR FREE?
Our hot teas are all sugar free. Our ready-to-drink energy iced teas have 0 sugar flavors (and other, low-sugar flavors). Our powder packs contain a little sugar.
ARE YOUR PRODUCTS GLUTEN FREE?
All Zest products are gluten free.
HOW MANY CALORIES/CARBS ARE IN ZEST PRODUCTS? CAN I DRINK THIS ON A KETO DIET?
Our hot teas have 0 calories and carbs.
HOW MUCH WATER TO USE PER TEA BAG?
One serving is typically brewed with 6-8 oz of water. Some use as much as 12-15oz of water for the same amount of tea so it’s completely up to your personal preferences. We recommend starting with the standard measurements and experimenting to see what you like best.
FOR HOW LONG SHOULD I BREW THE TEA?
Use near-boiling water (freshly boiled water) and brew the tea for 3-4 min if brewing Green Tea, or 4-5 min if brewing Black Tea.
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.
Love this tea! I've been starting my mornings with it for 5 years!
Hi there! Thanks for sharing your love for our Cinnamon Tea!
K
Kim Fury
J
Jennifer King
The flavor is spot on and I love the fact I get my morning caffeine and soak up the smell and taste of apples and cinnamon, just an amazing product. I absolutely love it and excited to try more flavors.
Thank you for your awesome feedback! We are glad to hear you are enjoying our Apple Cinnamon Tea
N
Naeem Burns
This tea is packaged very well, it taste good. I do think that the CHI cinnamon tea, has a bit of a stronger taste of cinnamon. As far as it giving me more energy, I really didn't experience that, maybe initially it might have, but I can't really say that it truly did so far. It is a good tea to have, and try.
Thank you for your review!
K
Katherine Parker
This is such a good flavor combo for the fall/winter. smells amazing
Thank you for your review, we're glad you are enjoying both the flavor and smell!