Does matcha irritate the stomach? Is it suitable for people with a sensitive stomach?

Matcha (green tea powder) contains caffeine and catechins (such as EGCG), which may irritate the gastrointestinal tract:

Caffeine: Stimulates gastric acid secretion, potentially causing heartburn, acid reflux, or discomfort, especially in sensitive individuals.
Catechins: Possess antioxidant properties but may irritate the gastric mucosa at high concentrations, leading to nausea or abdominal pain.
Other Factors: Matcha is typically concentrated. Consuming it on an empty stomach or in excessive amounts increases the risk of irritation.

Individuals with stomach problems (e.g., gastritis, ulcers, or excess stomach acid) should exercise caution:

Not Recommended: If the stomach is sensitive or symptoms exist (e.g., pain, acid reflux), matcha may worsen discomfort or trigger flare-ups.
Potentially Suitable: For mild stomach issues, small amounts (e.g., 1-2 grams daily) may be tried while monitoring reactions.
Key Recommendations:
- Avoid drinking on an empty stomach; consume after meals.
- Opt for low-caffeine matcha or dilute it.
- Consult a doctor to adjust intake based on individual conditions.
- Prioritize gentler beverages (e.g., barley tea or ginger tea) as alternatives.