Free Shipping On Orders Over $40
World Tea Expo Top New Product Award

Caffeine Enhanced energy teas

Premium blends enhanced with natural caffeine and packed with amino acids

Check out the sampler
Scroll Down

The Most Caffeinated Tea On The Market...


Regular Green Tea
25 mg/Cup

Regular Black Tea
50 mg /Cup

100-150 mg /Cup

Zest Green Tea
135 mg /Cup

Zest Black Tea
155 mg /Cup

Without The Jitters Or Crash Of Coffee

Focused Energy

The combination of the caffeine and L-Theanine (a rare amino acid) in Zest Tea has a synergistic effect that prolongs the energy levels and creates a more steady alertness. A side effect of the energy moderation is a reduction in the "jitters" and "crash" that typically accompanies caffeinated beverages. 

A healthy and effective coffee substitute

"We felt 'in the zone' almost more clearheaded than we would normally be with coffee... It definitely hits you harder, but I didn't get jittery or anything" -



Billy Schrero Testimonial

"Tastes great and good energy. Have literally stopped drinking coffee since getting my first batch of zest tea!!"

Billy Schrero

Daniel Rodic Testimonial

"Perks me up 10x better than coffee, amazing!" 

Daniel Rodic

Nick Loadholtes Testimonial

"I know the selling point of Zest Teas are the caffeine, but honestly the flavor is what keeps me coming back. I have never had such a flavorful tea that was not overpowering. This stuff is awesome."

Nick Loadholtes

Daniel Becker Testimonial

"I love coffee but from having my first cup of Zest Tea all I can say is WOW."

Daniel Becker

Ultimate Sampler [4-Pack]

Zest Blog

Post Grad Problems: 13 Daily Struggles Of The Recent Grad

October 08, 2015

College graduates walking
Leaving college is a struggle, but don't worry, you're not alone. We've compiled a list of 13 classic Post Grad Problems we've all had to tackle since graduating. 
USA: The Cool Origin of Iced Tea

January 15, 2015

American Tea rituals

We’ve explored tea rituals from around the world, and now it’s finally time to bring our journey home to the United States. From the Boston...

Tea Travels By Land And Sea: Persia And Morocco

December 18, 2014

Moroccan Tea Set

We've referenced the Silk Road a few times in our series on tea productivity rituals. The Silk Road connected civilizations from Asia to Europe...

The Sun Never Sets On The British Tea Empire: England

December 11, 2014

British Tea Rituals

While the origins of tea are deeply rooted in China and East Asia, it's difficult to overstate the importance of the British Empire and India...