Can patients with anxiety drink matcha powder?
Generally, patients with anxiety disorders may consume a small amount of matcha if their symptoms are stable and they tolerate caffeine well. However, it is not recommended if symptoms are frequent or the individual is sensitive to caffeine. If in doubt, consult a healthcare professional beforehand. Detailed analysis is as follows:

If an anxiety disorder is well-controlled, with no obvious daily symptoms such as palpitations or tension, and if previous consumption of caffeine-containing beverages has not triggered discomfort, occasional intake of a small amount of low-concentration matcha powder (to avoid excessive caffeine) while monitoring bodily reactions typically does not significantly affect emotional state.
Matcha powder contains caffeine. If a patient experiences frequent anxiety episodes, is sensitive to caffeine (experiencing increased heart rate, insomnia, or worsened anxiety after consumption), or is taking anti-anxiety medications (as caffeine may interfere with drug efficacy), drinking matcha may stimulate the nervous system and exacerbate anxiety symptoms; in such cases, consumption should be avoided.
Prior to consuming matcha, individuals with anxiety disorders should assess their current condition, avoid drinking on an empty stomach or before bedtime, discontinue use immediately if any adverse effects occur, and seek medical attention promptly if symptoms persist. Do not compromise the stability of your condition for the sake of a beverage.