In today’s fast-paced lifestyle, health-conscious and functional beverages have taken centre stage. One standout in recent years is matcha. 

This vibrant green tea powder has won over hearts not just for its antioxidant punch and naturally calming L-theanine, but also for its smooth taste and picture-perfect presentation—frequently splashed across social media feeds. From upscale cafés to supermarket shelves, matcha has become a familiar name. 

The global popularity of matcha continues to soar. Market data suggests the matcha industry is set for significant growth, driven by increasing consumer awareness of its health benefits and its versatility in food—from lattes and pastries to desserts and savoury dishes. 

But behind the appeal lies something worth noting—especially for those prone to digestive issues: matcha contains caffeine. Often mistaken for a lighter alternative to coffee, matcha still carries a notable caffeine load. And for some, that can spell trouble for the gut. 

What Is Matcha? 

Matcha is a finely ground powder made from specially cultivated green tea leaves (Camellia sinensis), most famously grown in Japan’s Uji and Nishio regions. The plants are shaded for 20–30 days before harvest to boost L-theanine and chlorophyll levels, which also gives matcha its signature vivid colour. 

After harvesting, the leaves are quickly steamed to prevent oxidation, then dried and stripped of stems and veins. The resulting leaves—called tencha—are stone-ground into a fine powder. That’s matcha. 

Unlike regular green tea where the leaves are steeped then discarded, matcha is consumed whole, mixed into hot water or milk. This method delivers a higher concentration of nutrients, including caffeine. To put it into perspective: 

The amount of caffeine depends on the grade and quantity used. 

Matcha Caffeine and Its Impact on the Digestive System 

Caffeine is a natural stimulant that acts not only on the central nervous system but also on the digestive tract. In people with high sensitivity or in excessive amounts, caffeine can trigger what’s commonly referred to as "matcha acid reflux." Here’s how: 

  • Stimulates excess stomach acid 
    Caffeine encourages the stomach’s parietal cells to secrete more hydrochloric acid. If unbalanced, this can irritate the stomach lining and cause pain or discomfort. 
  • Relaxes the lower esophageal sphincter (LES) 
    The LES acts as a valve between the stomach and oesophagus. When relaxed too much—something caffeine can cause—acid may travel upwards, triggering heartburn or chest discomfort. 
  • May lead to indigestion-like symptoms 
    Including bloating, fullness, nausea, or even vomiting, particularly if matcha is consumed on an empty stomach. 

Can Matcha Cause Acid Reflux? 

For some people, the answer is yes, matcha can cause acid reflux—especially those who: 

  • Have a history of GERD or acid reflux 
  • Suffer from gastritis or stomach ulcers 
  • Are particularly sensitive to caffeine 

It’s true that matcha contains L-theanine, which helps smooth out the effects of caffeine and provides a calm, sustained energy boost. However, the risk to the digestive system—particularly for sensitive individuals—still exists, especially when consumed in large quantities or without food. 

That said, it doesn’t mean you need to swear off matcha altogether. Everyone’s tolerance varies. Some people may enjoy a daily cup without issue. The key is listening to your body and understanding your personal limits. Start with a small amount, monitor how your body responds, and adjust accordingly. 

Bahtera’s Solution: Managing Acid Reflux with Vonoprazan 

If you often experience symptoms like heartburn, upper abdominal pain, or nausea after drinking matcha or other caffeinated beverages, Vonoprazan might be the modern solution you've been looking for. 

Vonoprazan belongs to a class of drugs called Potassium-Competitive Acid Blockers (P-CABs), which offer a newer and more stable mechanism for reducing stomach acid compared to conventional PPIs (Proton Pump Inhibitors) like omeprazole. 

Why Vonoprazan: 

  • Fast absorption and rapid onset – works within 1.5 to 2 hours, with or without food 
  • Longer duration of effect – thanks to a half-life of ~7.7 hours 
  • Blocks both active and resting proton pumps – for more comprehensive acid suppression 
  • Clinically effective – over 95% healing rate for GERD and 90% for ulcers 
  • Improved eradication of H. pylori – including strains resistant to clarithromycin 
  • Well tolerated and safe – with consistent performance across patient profiles 

Bahtera Adi Jaya provides Vonoprazan with complete documentation for pharmaceutical use in Indonesia—offering a promising alternative for those struggling with acid-related digestive issues. 

Matcha is undoubtedly a health-forward beverage with a host of benefits—but for those with sensitive stomachs, understanding the impact of matcha caffeine is crucial. Moderation is key. Pay attention to when and how you consume it, and always listen to your body. 

If acid reflux persists despite cutting back, consult a healthcare professional. With solutions like Vonoprazan, you can enjoy your days—and your matcha—without discomfort. Find your solutions with Bahtera here.