Does Matcha Give You Bad Breath?

Matcha has exploded in popularity over the past few years. It's packed with antioxidants, gives you a smoother energy boost than coffee, and looks incredible in photos. But there's one thing matcha drinkers don't talk about nearly enough.

Matcha breath.

If you've ever finished a matcha latte and noticed a weird, lingering taste or smell, you're not imagining it. And you're definitely not alone.

So Does Matcha Actually Cause Bad Breath?

The short answer is yes, it can. But probably not for the reasons you think.

Matcha itself isn't inherently smelly. It's a finely ground green tea powder, and green tea actually contains compounds called catechins that may help fight bacteria in your mouth. In theory, matcha should be good for your breath.

But here's where it gets tricky.

The Real Culprits

Dry mouth. Just like coffee, matcha contains caffeine. Caffeine reduces saliva production, and when your mouth dries out, bacteria multiply. Those bacteria are what cause bad breath, not the matcha itself. A large matcha latte can dry out your mouth just as much as a cup of coffee.

Milk and sweeteners. Most people don't drink matcha straight. They add oat milk, almond milk, honey, vanilla syrup, or sugar. Milk proteins and sugars give bacteria in your mouth something to feed on, which produces volatile sulfur compounds. That's the fancy science term for bad breath.

The coating effect. Matcha powder is extremely fine and tends to coat your tongue and the inside of your mouth. That thin green layer traps bacteria and creates an environment where odor can build up, especially if you don't rinse or drink water after.

Matcha vs. Coffee: Which Is Worse for Your Breath?

They're honestly pretty similar. Both contain caffeine that dries out your mouth. Both are often consumed with milk and sweeteners. And both leave a residue that bacteria love.

Coffee tends to have a stronger immediate smell, but matcha can create a more lingering, stale taste that's harder to get rid of because of how the powder coats your mouth.

The solution for both is the same.

How to Prevent Matcha Breath

Drink water right after. A few sips of water help rinse away the matcha coating on your tongue and rehydrate your mouth. This alone makes a big difference.

Skip the sugar. If you can, reduce the sweeteners in your matcha. Every gram of sugar is fuel for odor-causing bacteria. If you need sweetness, look for options sweetened with xylitol instead.

Chew aftergum® after your matcha. Just like with coffee, chewing aftergum® stimulates saliva production to wash away bacteria and neutralize acids. The Xylitol helps fight the bacteria directly, while MCT Oil contributes to that fresh, clean feeling. One piece right after your matcha and you're set.

Clean your tongue. Because matcha coats your tongue more than most drinks, a quick tongue scrape or even just brushing your tongue (wait 30 minutes after drinking) can help remove that layer where bacteria hide.

The Bottom Line

Matcha is a great drink with real health benefits. But just like coffee, it can leave your mouth in a state where bacteria thrive and bad breath follows. The fix is simple: rinse with water, chew a piece of aftergum®, and move on with your day.

aftergum® isn't just for coffee drinkers. It's for matcha lovers, tea enthusiasts, and anyone who wants fresh breath and a clean feeling after their favorite drink.

Sip. Chew. Smile. No matter what's in your cup.

Shop aftergum® →