Blue container of Greco Gum with mastic gum nuggets on a light gray background

Hand holding a small open tin with mastic gum nuggets, featuring benefits on a dark background: "Clean mouth, prevent bloating, sculpt jaw, avoid plastic, and more..."

List of beneficial constituents found in Chios mastic gum on a light gray background

Text detailing the ingredients and benefits of mastic gum on a white background.

Person holding a Klassiko gum tin with text overlay: "Chewed daily, one Klassiko tin lasts 45+ days."

Man in a light blue shirt sitting outdoors and holding a mastic gum nugget with text overlay: "Place 1-2 nuggets on your tongue, let sit for 10 seconds, start chewing."

Man smiling while putting a mastic gum nugget in his mouth under a red canopy on a beach.

Close-up of hands sorting through a pile of mastic gum with text about origin: "Grown, harvested, and cleaned by hand in Chios, Greece."

Open container of large mastic gum nuggets on a textured surface with text 'Pure mastic gum, third-party tested.'

4.78 from 468 reviews

100K+ sold

Mastic gum nuggets

Q: How do I use it and how much should I chew?

Pinch out a small amount to start: Droplets: begin with 5–8 pieces Nuggets: begin with 1–2 nuggets Chew gently until the pieces soften and merge. Once it’s formed a single piece, you can add more if you want a bigger chew. Because it’s a natural resin, some pieces will be softer or harder. If a piece feels too soft or sticky, let it cool for a moment and combine it with a firmer piece to reach the right consistency. Most people chew for 30–90 minutes per session.

Our mastic gum nuggets are soft and easy to chew, with a mild pine flavor. Perfect for oral health and better digestion.

Sculpts your jawline
Kills bad breath
Calms digestion & bloating
100% plastic-free
As low as $0.77/day

Choose tin size:

New to mastic gum? Try our Starter Pack first →

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Buy once

$45.98

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HSA/FSA eligible*

Money back, no return

Swap your first order or take a full refund within 30 days. 99.3% never ask.

Whole crystallized resin from the mastic tree (Pistacia lentiscus var. Chia). Nothing added.

“Great jaw workout and my teeth are much cleaner.”

David W.Verified buyer

“High quality mastic gum. Don’t cheap out, this is the real deal right here”

John S.Verified buyer

Our raw mastic gum nuggets are harvested, cleaned, and sorted by hand. A natural, good-for-you alternative to artificial chewing gums.

A lot more than a jaw workout.

Mastic gum knocks back the bacteria behind plaque, calms inflamed gums, and promotes healthy digestion.

73%^*
of oral bacteria killed in two hours.
33%^†
less gum inflammation in one week.
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.

Single originChios, Greece
One ingredientMastic resin
120+ beneficialCompounds
Chew for hoursNever loses flavor
Truestar certifiedNo contaminants
Single originChios, Greece
One ingredientMastic resin
120+ beneficialCompounds
Chew for hoursNever loses flavor
Truestar certifiedNo contaminants
Single originChios, Greece
One ingredientMastic resin
120+ beneficialCompounds
Chew for hoursNever loses flavor
Truestar certifiedNo contaminants
Single originChios, Greece
One ingredientMastic resin
120+ beneficialCompounds
Chew for hoursNever loses flavor
Truestar certifiedNo contaminants

Good for your mouth, gut, jaw, and more.

Mastic gum has been treasured for millennia. Its beneficial properties were known to Hippocrates in 400 BC, who recommended it for the prevention of digestive problems, colds, and bad breath.

Artificial chewing gums

Cleans teeth & freshens breath

Digestive relief & de-bloating

Hard enough to train facial muscles

Free from sugars and sweeteners

120+ naturally occurring beneficial compounds

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.

Hundreds of verified customer reviews.

★★★★★
Does not stick to teeth as bad
I love this gum so far. It does not seem to stick to my teeth as bad.
KYLE J. · Verified buyer · August 31, 2026
★★★★★
Great taste, help digestion
The Greco nuggets are fantastic, I love the taste now, but it took a few chewings to appreciate it. It helps with my digestion and I know from the published studies that it helps to balance the mouth microbiome. Chewing is good for your health and even better when there are no synthetic sweeteners in what you chew. Occasionally I get a soft piece that doesn’t firm up but that’s to be expected as they all look the same. I even reuse the same piece for a couple of days, keeping it in a pillbox. That sounded gross to me at first but I got over it.
Amy M. · Verified buyer · August 30, 2026
★★★★★
Great!
Easy to chew for hours, decent taste and lasts a long time. I can feel an improvement.
Cathy B. · Verified buyer · August 30, 2026
★★★★★
Out with the old in with the new
Learned to love the taste after eating large meals. Genuinely helped with digestion and made me form a habit. It also helps me focus. I have a bad problem where I chew the inside of my cheek and this has curbed that problem greatly. Mastic gum has made me kick bad habits and form good ones in just a couple weeks. Great stuff.
NOAH P. · Verified buyer · August 30, 2026
★★★☆☆
Tastes funny. Weird texture at the top. Becomes hard to chew pretty quickly. Sorta makes your tum feel weird for a bit. Does leave your teeth and mouth feeling kinda nice tho. One hundred percent not worth $50 tho
Kelvin P. · Verified buyer · August 30, 2026
★★★★★
Mediterranean Mandible
Each nugget brings me into deeper connection with the spirit of my seafaring Mediterranean forefathers.
Paul P. · Verified buyer · August 30, 2026

Frequently Asked Questions

It will feel very different from supermarket gum.

The first 1–2 minutes can be strange: the resin breaks into little pieces, there may be a light dusty coating, and the flavor is strong. As it warms up, the pieces bind together into a smooth, rubbery chew that you can work on for a long time.

Start small, chew slowly, and give it a few minutes to come together. Most people say it’s “weird at first, then addictive” once they’ve tried it a few times.

Pinch out a small amount to start:

Droplets: begin with 5–8 pieces
Nuggets: begin with 1–2 nuggets

Chew gently until the pieces soften and merge. Once it’s formed a single piece, you can add more if you want a bigger chew.

Because it’s a natural resin, some pieces will be softer or harder. If a piece feels too soft or sticky, let it cool for a moment and combine it with a firmer piece to reach the right consistency.

Most people chew for 30–90 minutes per session.

Most customers chew Greco Gum daily, often after meals or during work, study, driving, or training sessions.

A good rule of thumb:

Start with shorter sessions (15–30 minutes)
Increase the time as your jaw gets used to it
If your jaw feels sore or overworked, take a break and treat it like you would any other muscle

As with any food product, listen to your body and adjust your routine if something feels off.

Both are made from the same pure mastic resin. The difference is in the shape, texture, and how they chew:

Droplets are small, very uniform pieces. They’re firmer, give a slightly more intense jaw workout, and are rarely (if ever) sticky. They’re easy to dose precisely and feel the most “controlled.”
Nuggets are irregular chunks broken from larger pieces of resin. They’re generally softer than droplets, with more natural variation from piece to piece. Some nuggets can be a bit stickier, which many customers prefer once they get used to it.

If you’re new and want to find your favorite variant, our Starter Pack is the best option – you get a small tin of each and can see which texture and chew you enjoy more.

Most gum is made from cheap gum base, sweeteners, and flavorings. Greco Gum has one ingredient: pure mastic resin from the island of Chios in Greece.

Mastic is a niche crop with limited supply, and the resin has to be harvested, cleaned, and sorted by hand. You’re paying for:

A single-origin, plastic-free gum base
Careful grading for chew quality
A product that lasts far longer per piece than normal gum

What if I don’t like it?

Your first order is covered, no strings. Mastic isn’t for everyone, so if it’s not for you, email us within 30 days and we’ll swap it for the other variant or refund you in full, shipping included. Keep the tin. One per customer, only on our website.

Is it safe for my teeth, fillings, or TMJ?

Greco Gum is much harder than ordinary gum. If you have fragile teeth, recent dental work, or existing TMJ trouble, check with your dentist first.

Either way, ease in: start with a small amount, warm it up gently, and rest your jaw on days it feels sore. If you’d rather not chew at all, our capsules give you mastic without the workout.

Can I chew it every day?

Most customers chew Greco Gum daily, often after meals or during work, study, driving, or training sessions.

A good rule of thumb:

Start with shorter sessions (15–30 minutes)
Increase the time as your jaw gets used to it
If your jaw feels sore or overworked, take a break and treat it like you would any other muscle

As with any food product, listen to your body and adjust your routine if something feels off.

Why is it more expensive than regular gum?

Most gum is made from cheap gum base, sweeteners, and flavorings. Greco Gum has one ingredient: pure mastic resin from the island of Chios in Greece.

Mastic is a niche crop with limited supply, and the resin has to be harvested, cleaned, and sorted by hand. You’re paying for:

A single-origin, plastic-free gum base
Careful grading for chew quality
A product that lasts far longer per piece than normal gum

Did we miss anything?

What does Greco Gum actually do?

Greco Gum is a hard, natural gum that gives your jaw a serious workout while you chew. Many customers use it to build a stronger-feeling jaw, keep their teeth and gums cleaner between brushes, and as a post-meal ritual that helps them feel “finished” without dessert or extra snacking.

How do I use it and how much should I chew?

Pinch out a small amount to start:

Droplets: begin with 5–8 pieces
Nuggets: begin with 1–2 nuggets

Chew gently until the pieces soften and merge. Once it’s formed a single piece, you can add more if you want a bigger chew.

Because it’s a natural resin, some pieces will be softer or harder. If a piece feels too soft or sticky, let it cool for a moment and combine it with a firmer piece to reach the right consistency.

Most people chew for 30–90 minutes per session.

Droplets vs nuggets – which should I choose?

Both are made from the same pure mastic resin. The difference is in the shape, texture, and how they chew:

Droplets are small, very uniform pieces. They’re firmer, give a slightly more intense jaw workout, and are rarely (if ever) sticky. They’re easy to dose precisely and feel the most “controlled.”
Nuggets are irregular chunks broken from larger pieces of resin. They’re generally softer than droplets, with more natural variation from piece to piece. Some nuggets can be a bit stickier, which many customers prefer once they get used to it.

If you’re new and want to find your favorite variant, our Starter Pack is the best option – you get a small tin of each and can see which texture and chew you enjoy more.

What is it made of?

Just one ingredient: crystallized resin from the mastic tree (Pistacia lentiscus var. Chia), grown and harvested on the island of Chios in Greece.

There are no sweeteners, plastics, flavorings, or fillers.

What should I expect the first time I chew?

It will feel very different from supermarket gum.

Start small, chew slowly, and give it a few minutes to come together. Most people say it’s “weird at first, then addictive” once they’ve tried it a few times.

What does it taste like?

Greco Gum is not sweet. The taste is piney and resinous, with a slight bitterness at first and a fresh pine/cedar note as you keep chewing.

If you’re expecting sugary mint gum, this will be a shock at the beginning. If you enjoy strong, natural flavors (black coffee, dark chocolate, herbal spirits), you’re more likely to love it once you’ve given it a few tries.

How long does a tin last?

Greco Gum is built for long chewing sessions. Once it has softened, a single chew can comfortably last 45–90 minutes or more, and some people reuse the same piece later in the day.

Chewed daily, most customers find that one Klassiko tin lasts around 4–6 weeks, depending on how much you use at a time. Stored in a cool, dry place away from direct sunlight, the gum itself keeps well for years.

Where do you ship to?

We ship worldwide from our warehouse in the central United States. US shipping is free on orders over $75.

Shipping options and prices are shown at checkout. Outside the US, your order may be subject to local VAT or customs charges, which are set by your country. For more detail, see our Shipping & Returns page.

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