Can people with a cold take Cordyceps militaris?

Generally, individuals with mild cold symptoms and good physical tolerance may consume a small amount of Cordyceps cicadae (Jinchanhua). However, those with sensitive constitutions, pronounced symptoms, or fever are advised against its consumption. If in doubt, it is recommended to consult a healthcare professional beforehand. Detailed analysis is as follows:

If after catching a cold one only experiences mild nasal congestion or runny nose without serious discomfort such as fever or sore throat, and has previously consumed Cordyceps cicadae without allergic reactions or gastrointestinal discomfort, then consuming a small amount is generally safe. The nutritional components in Cordyceps cicadae can help support energy levels, and under these conditions—when the body's burden is light—moderate intake typically does not worsen cold symptoms or trigger adverse effects.

However, if cold symptoms are significant and accompanied by fever, coughing, fatigue, or if the individual has an allergic constitution or weak digestive function, consuming Cordyceps cicadae is not recommended. During a cold, the body’s immune system is highly active; as a type of fungus, Cordyceps cicadae may act as a "foreign protein" and potentially trigger allergic reactions. Additionally, during fever, digestive function is reduced, and the tonic nature of Cordyceps cicadae may increase gastrointestinal burden, leading to bloating, indigestion, or even delayed recovery from the cold.

Before consuming Cordyceps cicadae during a cold, one should first assess their own health status. First-time users should avoid trying it while sick. If any adverse reactions such as rash or abdominal pain occur after consumption, discontinue use immediately and monitor symptoms. If discomfort persists, seek medical attention promptly, prioritizing recovery from the cold.