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4.79 from 1,014 reviews

Discover mastic.

Natural chewing gum and dietary supplements for gut and mouth health.

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Join over 52,000 satisfied customers
  • Single originChios, Greece
  • One ingredientMastic resin
  • 120+ beneficialCompounds
  • Chew for hoursNever loses flavor
  • Truestar certifiedNo contaminants
Feel the difference

Greco Gum is America’s premier brand of mastic gum. Grown and harvested on the beautiful island of Chios in the Aegean Sea for over 1,000 years.

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Why Greco Gum?

Sculpts jaw

Hits all four jaw muscles: masseter, temporalis, and both pterygoids. It’s the best way to train your face.

No plastic

Ordinary chewing gum is built on a petrochemical base. Ours has one ingredient: mastic resin.

Digestive support

Mastic is antimicrobial, antibacterial, and anti-inflammatory, which is why it relieves indigestion, bloating, and other gut trouble.

Piney taste

The taste is piney and refreshing, and completely natural: no artificial flavors.

One of a kind

Chios, with its unique microclimate, is the only place in the world where mastic trees produce their healing resin.

Oral health

Mastic gum kills the bacteria behind plaque, tooth decay, and bad breath.

Premium mastic gum products, hand-picked and sorted for quality and purity.

Best-selling products

Build a stronger jaw.

Hard enough to work all four jaw muscles. Also cleans up your breath, fights harmful bacteria, and supports your gut.
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  • 73%*

    of oral bacteria killed in two hours.

  • 15%

    thicker jaw muscles in eight weeks.

  • 77%

    report better digestion in three weeks.

*†‡: Based on clinical studies of mastic gum. Individual results may vary. 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.

Man with Greco Gum

For taste makers and those in pursuit of better.

Our customers care deeply about health, and they expect nothing but the best.

Here’s what they say about Greco Gum:

David
I like Greco Gum nuggets so much, I tell all of my friends about them.
David, customer since April 2023
Reagan
Subtle and mysterious flavor, notes of arid forest, incense, unlocks genetic memories of Atlantean breeze.
Reagan, customer for 2 years
Ron Dombkowski
Leaves my mouth feeling refreshed and I feel like I’m doing a good deed for my jaw and gastro tract.
Ron Dombkowski, customer since March 2025
Francine Tesler
Blends ancient wisdom with modern science to create a powerful natural remedy.
Francine Tesler, tried our droplets

And some more praise...

Keeps me focused!
Juliana Lung
Juliana Lung
Founder, Vera Salt
Best gum on Earth.
Solbrah
Solbrah
Natural health advocate
Finest mastic gum on the market.
Marcel Schaar
Marcel Schaar
Bodybuilder
I chew Greco every day.
Ashley English
Ashley English
Founder, Earth & Ash
Great jaw workout.
Ed Latimore
Ed Latimore
Prizewinning boxer
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Greco Gum nuggets tin
Chios windmills

Real mastic gum only comes from one place.

Welcome to Chios, a small island in the Aegean Sea.

Wooded mountains in the north weaken the mediterranean wind and create a dry climate in the south. The region’s unique microclimate and soil formation result from ancient underwater volcanic activity.

Thanks to these two factors, southern Chios is the only place in the world where mastic trees produce their healing resin.

Based on the island, with warehouses in the US, Greco Gum makes available only the finest-quality mastic gum products: raw resin, powder, oil, and more.

Learn more
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