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Greco Gum Starter Pack
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..."
Greco Gum Starter Pack
Greco Gum Starter Pack
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.
Greco Gum Starter Pack
Man smiling while putting a mastic gum nugget in his mouth under a red canopy on a beach.
4.80 from 979 reviews
·
100K+ sold

Greco Gum Starter Pack

Try both varieties of premium mastic gum in one convenient bundle. Perfect for first-time buyers to discover which type suits you best.

  • Sculpts your jawline
  • Kills bad breath
  • Calms digestion & bloating
  • 100% plastic-free
$52.96
$39.72
Save 25%

Quality & Authenticity Report

Truestar verifies and publishes third-party test results for every harvest of Greco Gum.

All checks passed

This batch is authentic Chios mastiha. No contaminant detected above safety limits.

Nuggetsbytruestar.com/GG-665576Dropletsbytruestar.com/GG-685576Issued21 May 2026
Origin & Identity

Authentic mastiha grows only in the Mastichochoria of southern Chios, and imitation resins are common. Identity is confirmed at the species level before any batch is cleared.

DNA species testtrnL region vs. NCBI · CMGA labP. lentiscusconfirmed
Botanical identity (HPTLC)independent · RL LabsMastic gumstandard profile
Mastic acids contentmasticadienonic + iso · HPTLC> 12%meets Ph. Eur.
EU Protected Designation of Origin emblem
Protected Designation of Origin

The raw resin is “Chios Mastiha,” protected under EU law (PDO-GR-1558). It is harvested on Chios and certified by the official growers’ association. EU register →

Lots 665576 & 685576 · certified by CMGA · 2026-05-21
Heavy Metals

“Not detected” means below the lab’s detection limit. For scale, a cup of brown rice holds roughly 10 µg of arsenic (FDA Total Diet Study), far above what is detectable in a serving here.

ArsenicNot detectedLOD 0.011 µg/g
CadmiumNot detectedLOD 0.022 µg/g
Lead< 0.085 µg/gbelow quantifiable level · under half the 0.2 µg/g limit
MercuryNot detectedLOD 0.005 µg/g
Tested by RL Labs · ICP-MS · 2025-09-08
Pesticides

Every lot is screened by the official growers’ association before release: a multi-residue panel of hundreds of agricultural chemicals against Ph. Eur. limits.

Multi-residue panelhundreds of compounds · GC/MS-MS & LC/MS-MSNone above0.01 mg/kg limit
DithiocarbamatesMTD. Pest 100< 0.2 mg CS₂/kgconforms
Ph. Eur. residue monographCompliant
Lots 665576 & 685576 · CMGA Quality Dept. · 2026-05-21
Microbes

Independent testing to USP methods. Every count falls far below its specification limit.

Total plate count< 10 cfu/glimit 1,000 · 100× under
Yeast & mold< 10 cfu/glimit 100
E. coliNot detected
SalmonellaNot detected
Staph. aureusNot detected
EnterobacteriaNot detectedabsent in 1 g
Tested by RL Labs · USP <2021>/<2022> · 2025-09-08
Analysis performed by
Director of Microbiology
RL Labs · independent laboratory, est. 2005
Ioannis Benovias
Chemist, M.Sc
Quality Dept. · Chios Gum Mastic Growers Association
Verified & published by

Results reflect laboratory analysis of submitted samples at the time of testing, as reported by the named laboratories. RL Labs has no financial interest in the product. Truestar verifies the source documents; it does not perform the analysis. Results do not guarantee future performance or shelf life.

Customer

I’ve tried several varieties of mastic gum and none of them come close to the quality of Greco Gum.

What you get

Mastic gum nuggets – Mikro (15g)
1
Mastic gum nuggets
Mikro (15g)
1 travel-sized tin containing
our softer, larger nuggets
Mastic gum droplets – Mikro (15g)
1
Mastic gum droplets
Mikro (15g)
1 travel-sized tin containing
our harder, smaller droplets
Ingredients
Our mastic gum contains one single ingredient: crystallized resin harvested from mastic trees grown on the island of Chios, Greece.
How to use
Chew 30–60 minutes daily. On an empty stomach to prevent bloating and aid digestion, after meals to freshen breath. Anytime to train your jaw muscles and improve focus.
Sourcing
Sourced from the latest mastic gum harvest through the official growers’ association. Pieces are chosen for their purity and then hand-filtered to remove as many sticky pieces as possible before packaging.

Our mastic gum is harvested, cleaned, and sorted by hand. A natural, good-for-you alternative to plastic-filled chewing gums.

Build a stronger jaw.

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

  • 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.

Frequently Asked Questions