Greco Gum

Proud sponsors of Are You Ok?

Sam Hyde with the Greco Gum Starter Pack, as seen on Are You Ok?

颜值最大化 · 养肠 · 除口臭 Sam Hyde 同款 · 究极补剂套装

Sam Hyde’s hand-picked, looksmaxxing, jaw-forging, gut-calming, breath-purifying, microplastic-free, 2,400-year-old super stack...

The Greco Gum Starter Pack — both Mikro tins

Exclusive offer for Are You Ok? watchers

Two pocket tins to start with, so you can try both and find your favorite. This is gum that actually works: it gives your jaw a workout, settles your gut, and keeps your breath fresh, every time you chew.

The Greco Gum Starter Pack

$36.99$52.96
Save 30%

4.8 from 1,000+ reviews100,000+ tins sold

Plus save 20% on everything else

Code OK takes 20% off anything from our product range.

Regular chewing gum is made of plastic. The base is synthetic rubber, the same material as shopping bags and car tires, and on the ingredient list it shows up only as “gum base.”

Greco Gum is the alternative. People have been chewing it since 400 BC. It is tree resin and nothing else, and it comes from a tree that grows in only one place, the southern half of the Greek island of Chios.

Here are three reasons to chew our gum instead.

Reason one: the jaw

Build a stronger jaw.

It comes down to the gum itself. Greco Gum is dense, and a single piece holds up for hours, so your jaw is doing real work the whole time.

The photos below are real customers from our blog. None of them chewed in a vacuum: they paired it with diet, posture, or training for months, so results vary.

Anthony K. before chewing mastic gumBefore
Anthony K. after chewing mastic gumAfter
Anthony K. Six months on mastic droplets a few days a week, with a clean diet and tongue posture.
George B. before chewing mastic gumBefore
George B. after chewing mastic gumAfter
George B. Six months on a mix of nuggets and droplets, most mornings.
Marcel Schaar before and after chewing mastic gum
Marcel Schaar. 12 months, alongside major fat loss and a full fitness overhaul. A best-case stack.
“A buddy I hadn’t seen in a while complimented me on how my jawline was jacked.”
Matty I.Verified buyer

Reason two: it’s plastic

You’re swallowing plastic.

The base in regular gum is synthetic rubber, built to stay rubbery and never dissolve. It is the same family of material as a few things you would never put in your mouth on purpose.

  • Polyethylene, the plastic in shopping bags

    Polyethylene

    the plastic in shopping bags

  • Styrene-butadiene, the rubber in car tires

    Styrene-butadiene

    the rubber in car tires

  • Polyvinyl acetate, wood glue

    Polyvinyl acetate

    wood glue

In March 2025, UCLA had people chew gum and measured what came off into their saliva. On average it shed around 100 microplastic particles per gram, and some pieces shed up to 600. Most of it came loose within the first eight minutes.1

Up to ~3,000

microplastic particles shed from a single piece of gum

UCLA, American Chemical Society, 2025

Where microplastics turn up in the body: the brain, the arteries, and the testicles

The plastic does not pass through you. It settles in the tissues that hold onto fat. Researchers have cut open human arteries and found it in the plaque, and the people who had it were far more likely to have a heart attack or a stroke in the years that followed.2 They found it in every testicle they tested.3 They found more of it in human brains than in the liver or kidneys, with the most in the people who died with dementia.4

You are adding to that pile every day, for a stick of flavored rubber. Mastic has no base to break down, because the resin is the gum.

Reason three: the rest of the stack

Good for your gut, breath, and teeth.

The jaw is why most people try mastic. What they do not expect is how much it does for everything else while they chew.

A woman holding a Greco Gum tin at the beachA calmer gut

Mastic settles a heavy, bloated gut and calms the cramping and reflux that come with a bad one.5

A couple sharing a kiss, one holding a Greco Gum tinFresher breath

Bad breath comes from bacteria in your mouth. Mints just cover it; mastic clears the source.

A woman tasting a piece of Greco mastic gumCleaner teeth

An hour of chewing scrubs your teeth while the resin clears the bacteria behind plaque.

What chewers say

4.8
Average rating
940
Reviews
100K+
Tins sold
  • “A buddy I hadn’t seen in a while complimented me on how my jawline was jacked.”
    MIMatty I.Verified buyer
  • “This stuff rules. My mouth feels cleaner, breath fresher. Just good stuff all around.”
    MGMichael G.Verified buyer
  • “Works good. Jaw stronger. Teeth cleaner.”
    SBStephen B.Verified buyer
  • “The best all-natural gum I’ve come across. Gut health, stronger jaw, no microplastics. No-brainer.”
    DEDennis E.Verified buyer
  • “I’ve noticed a change in my gut, which is very positive. And I love the taste.”
    AGAndrew G.Verified buyer
  • “I’ll never go back to regular gum now.”
    AHAnn H.Verified buyer
  • “This gum has helped me in ways I never thought gum could. My neck stiffness melts away after five minutes of chewing.”
    ACAndre C.Verified buyer
  • “Great exercise for your jaw without the microplastics.”
    NANicole A.Verified buyer
  • “Chew it for hours until your masseters are sore. Leaves your teeth feeling like you just left the hygienist.”
    DADylan A.Verified buyer
  • “I try a lot of supplements and keep the good ones. In a short time, I can tell this is one I’ll keep.”
    NONeal O.Verified buyer
  • “I noticed my jaw getting more defined. I use it on my commute home.”
    MSMatthew S.Verified buyer
  • “Incredible gum. I chew it for hours.”
    LTLeon T.Verified buyer
  • “It doesn’t lose its consistency, texture, or taste, even chewed for hours.”
    KMKevin M.Verified buyer
  • “Great jaw workout. Teeth feel cleaner, mouth feels fresh. Will be buying again.”
    JBJacob B.Verified buyer
  • “Great gum. Feel healthier already.”
    EDEric D.Verified buyer
  • “The taste is addicting and it lasts so long. Made my jaw sore from chewing, which is exactly what I wanted.”
    GDGeorge D.Verified buyer
  • “Very good for the masseters, and I’ve been feeling better chewing it.”
    RWRiley W.Verified buyer
  • “Very high quality. I can feel a difference in my mouth and jaw already.”
    DMDaniel M.Verified buyer
  • “Great flavor and texture.”
    JJJack J.Verified buyer
  • “Love the smaller droplets.”
    LCLauren C.Verified buyer
  • “Great texture and good quality.”
    ARAlex R.Verified buyer
  • “I love having a healthy way to chew every day.”
    DIDavid I.Verified buyer
  • “Love all the health benefits tied to this gum.”
    JSJacob S.Verified buyer
  • “Taste is mild and natural, and it lasts a long time.”
    TDTyler D.Verified buyer
  • “I consider this heavyweight chewing gum. I like it.”
    SUSeth U.Verified buyer
  • “Fantastic quality, and exceptional customer service.”
    JFJack F.Verified buyer
  • “Easy to chew, and it leaves my mouth feeling clean and refreshed.”
    ZWZachary W.Verified buyer
  • “Been using it daily for two weeks. Will reorder.”
    DWDarrell W.Verified buyer
  • “Love the nuggets. Buy them if they’re available, because they go fast.”
    CBClement B.Verified buyer
  • “Enjoyed the gut health benefits, and a great jaw workout too.”
    CCChunhang C.Verified buyer
  • “It doesn’t stick to my teeth and the flavor is neutral. Really enjoy it.”
    TJTania J.Verified buyer
  • “First time using the nuggets and they’re amazing.”
    DJDavid J.Verified buyer
  • “I’m literally hooked. My new favorite hobby, plus all the health benefits.”
    KAKevin A.Verified buyer
  • “I no longer chew regular gum. The nuggets are great for oral health.”
    NBNicolas B.Verified buyer
  • “Lasts a very long time, and you can feel the workout it gives your jaw.”
    DCDavid C.Verified buyer
  • “Great packaging, and exactly what I wanted for my jaw.”
    EEEmilio E.Verified buyer
  • “The nuggets are a new level. Way beyond the starter pack.”
    JGJustin G.Verified buyer
  • “Easier to chew than the droplets, and both have their uses.”
    FAFarah A.Verified buyer
A grower tending a mastic tree on a hillside in southern Chios

Real Chios mastic

Why real mastic is not cheap

It comes down to where it grows and how it is made.

  • 01

    One island

    It refuses to make its resin anywhere but the southern half of Chios, across two dozen villages, the mastichochoria.

  • 02

    Rare chemistry

    The antibacterial and anti-inflammatory compounds that do the work only form in real mastic. Cheaper resins from other trees can look the part and do nothing.

  • 03

    Cut by hand

    Growers score every tree by hand each summer and wait for the resin to weep and harden into tears. A full year of one tree fills barely a single tin.

We buy ours straight from the growers’ association on Chios, so what ends up in your tin is the real thing and nothing else.

Before you buy

Straight answers

Does it actually do anything, or is it just something to chew?
Plenty. It is dense enough to load all four jaw muscles the way regular gum never could, and people have chewed it for gut and oral health for centuries, with the research to back it. The jaw you feel the same day; the gut and breath build with the habit.
How long does a tin actually last?
A single piece keeps its chew for hours, far longer than regular gum, so a tin lasts weeks of daily use, not days. The Starter Pack’s two tins keep most people going past a month, cheaper per chew than the gum you are replacing.
Is all mastic the same?
No. A lot of what is sold is stale, cut with filler, or cheap resin from other trees with none of the bioactive compounds unique to real mastic. Ours is sourced directly from Chios, filtered and sorted twice, and shipped to you from our US warehouse.
What should I expect the first time?
A fresh piece is tough for the first minute, then your jaw warms it and it softens into a proper chew. The taste is mild and a little piney, not sweet. If you have fillings or crowns, start gently.
Nuggets or Droplets?
That is why the Starter Pack is both. Nuggets are larger and softer, Droplets smaller and harder. Keep whichever becomes your default.
What if it is not for me?
Then you do not pay for it. Chew it for 30 days, and if it is not your thing, email us for a full refund, shipping included. Keep the tin. We would rather eat the cost than argue about gum.
A man in a blue-and-white striped suit, in the colors of the Greek flag

Make the switch

A stronger jaw, a calmer gut, and no more plastic.

You are already chewing gum every day. The only real question is whether it does something for you, or just leaves plastic behind.

The Greco Gum Starter Pack — both Mikro tins
Are You Ok? exclusive

The Starter Pack

4.8· 1,000+ reviews

Both shapes, in two pocket tins.

  • Nuggets and Droplets, 15g of each, so you can try both and find your favorite
  • A jaw workout that lasts for hours, not minutes
  • One ingredient, no synthetic base, nothing plastic to shed
  • Good for your gut, breath, and teeth, every time you chew
  • 30-day guarantee, shipped from the US in about a day
$36.99$52.96Save 30%

Secure checkout. Covered by our 30-day guarantee.

Greco Gum customer holding a tinGreco Gum customer holding a tinGreco Gum customer holding a tinGreco Gum customer holding a tinGreco Gum customer holding a tin

From our customers.

Our 30-day Spit-It-Out Guarantee

Chew it for a month. If mastic is not for you, email us and we refund every cent, shipping included. Keep the tin, there is nothing to send back. We would rather eat the cost than argue with you about gum.

P.S. Real mastic sells out, and so does this deal. The harvest is small, we run dry more than once a year, and the 30% only holds while the Are You Ok? read runs. If both tins are in stock as you read this, that is your window. Code OK takes 20% off anything else you add.

Shop the rest of the range

About this page. This is an advertisement for Greco Gum, run in connection with a paid sponsorship on Are You Ok?. Greco mastic gum is a food product, not a medical treatment, and nothing here is intended to diagnose, treat, cure, or prevent any disease. Microplastics research is ongoing and we have made no claim about specific health outcomes. Raw mastic gum is naturally hard and may damage dental work like fillings, crowns, or braces; by purchasing you accept responsibility for any resulting dental issues.

References

  1. Lowe, Lisa, Jamie Leonard, and Sanjay Mohanty. “Chewing Gum Can Shed Microplastics into Saliva.” Pilot study presented at the American Chemical Society Spring Meeting, San Diego, March 2025; under peer review. acs.org. ↩

  2. Marfella, Raffaele, et al. “Microplastics and Nanoplastics in Atheromas and Cardiovascular Events.” New England Journal of Medicine 390, no. 10 (2024): 900–910. doi.org. ↩

  3. Hu, Chelin Jamie, et al. “Microplastic Presence in Dog and Human Testis and Its Potential Association with Sperm Count and Weights of Testis and Epididymis.” Toxicological Sciences 200, no. 2 (2024): 235–240. doi.org. ↩

  4. Nihart, Alexander J., et al. “Bioaccumulation of Microplastics in Decedent Human Brains.” Nature Medicine 31 (2025): 1114–1119. doi.org. ↩

  5. Dabos, K. J., E. Sfika, L. J. Vlatta, et al. “Is Chios Mastic Gum Effective in the Treatment of Functional Dyspepsia?” Journal of Ethnopharmacology 127, no. 2 (2010): 205–209. doi.org. ↩

Greco Gum Starter Pack tins

Starter Pack

$36.99 $52.96