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What happens if you eat too much perilla?

Jun 20, 2025 Source: Cainiu Health
Dr. Shen Yonghua
Introduction
Overconsumption of perilla generally causes heatiness, gastrointestinal discomfort, depletion of qi, allergic reactions, and interference with medication efficacy. Perilla has a warm nature and a pungent taste; excessive intake may lead to accumulation of internal heat, manifesting as dry mouth, sore throat, gum bleeding, and even oral ulcers. Some individuals may also experience symptoms such as reduced urine output with dark urine, and constipation, thereby exacerbating internal heat and dryness.

Consuming excessive amounts of perilla generally may lead to heatiness, gastrointestinal discomfort, depletion of vital energy (Qi), allergic reactions, and interference with medication effectiveness. If any abnormalities occur, prompt medical attention is recommended. Detailed explanations are as follows:

1. Heatiness: Perilla has a warm nature and a pungent taste. Overconsumption may cause accumulation of internal heat. Symptoms may include dry mouth and throat, sore throat, swollen gums, and even oral ulcers. Some individuals may also experience dark-colored urine and constipation, worsening internal heat and dryness.

2. Gastrointestinal discomfort: Perilla contains volatile oils that may irritate the gastrointestinal mucosa when consumed in large amounts. Mild symptoms include nausea, vomiting, and abdominal pain, while severe cases may result in diarrhea, disrupting normal digestion and impairing nutrient absorption.

3. Depletion of vital energy (Qi): Perilla has properties that promote Qi circulation and dispersion. Excessive consumption excessively depletes the body's vital energy. Long-term overuse may lead to fatigue, weakness, and mental lethargy, particularly worsening Qi deficiency symptoms in individuals with weak constitutions.

4. Allergic reactions: Certain components in perilla may act as allergens. Individuals with allergic constitutions may develop symptoms such as skin itching, rashes, urticaria, and, in severe cases, respiratory tract edema, difficulty breathing, or wheezing.

5. Interference with medication effects: Perilla's components may interact with certain medications. For example, when taken with anticoagulant drugs, it may affect blood clotting; when used with sedatives, it may interfere with drug efficacy, increasing the risk of adverse reactions and affecting treatment outcomes.

In daily consumption, perilla intake should be controlled—fresh perilla should be limited to 10–15 grams per serving, and half that for dried perilla. Individuals with a naturally hot constitution or those experiencing yin deficiency with excessive internal heat should reduce consumption. If adverse symptoms occur, discontinue use immediately. Those currently on medication should consult a physician before consuming perilla to avoid potential health risks.

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