Herdibel Herdimin Her In Immunology is a supplement that includes Shiitake mushroom extract, known for its ability to strengthen the immune system. By taking one ampoule daily, on an empty stomach, this product can help you strengthen your defenses and stay healthy. Discover natural protection with Herdimin Her In Immunology. Composition Shiitake mushroom extract, purified water. Instructions for use Take one ampoule per day, on an empty stomach. Pharmaceutical advice Strengthen your immune system with Herdimin Her In Immunology.