Can patients with vasculitis take Ganoderma lucidum (Reishi mushroom)?
Generally, patients with vasculitis can consume small amounts of Ganoderma (Reishi mushroom) when their condition is stable and there are no contraindications. However, it is not recommended during acute flare-ups or if the patient has a tendency toward allergies. If in doubt, it is advisable to consult a healthcare professional before deciding. Detailed analysis is as follows:

Ganoderma is considered to have a neutral nature and, according to traditional understanding, may help regulate bodily functions. Moderate consumption does not directly negatively affect vasculitis. For patients with stable disease and suitable constitutions, consuming small amounts might help improve general well-being, but it must be clearly understood that Ganoderma cannot replace standard medical treatment.
Patients experiencing an acute phase of vasculitis should focus on symptomatic treatment. Consuming Ganoderma at this stage may divert attention from essential care, and some individuals may be allergic to its components, potentially causing adverse reactions such as skin itching or difficulty breathing—such cases must be strictly avoided. Furthermore, excessive intake of Ganoderma may increase gastrointestinal burden, impair nutrient absorption, and hinder recovery.
Prior to consumption, individuals should confirm whether they are allergic to Ganoderma; strictly control the dosage to prevent overconsumption; and under no circumstances discontinue or reduce prescribed medications because of taking Ganoderma.