Chitin is a large, structural polysaccharide found in the cell walls of fungi, the exoskeletons of insects, and certain hard structures in fish and invertebrates.

Dextromethorphan is an NMDA receptor antagonist used to treat cases of dry cough.

Antrodin A (AdA) is one of the main active ingredients in the solid-state fermented A. camphorata mycelium.?It protects the liver from alcohol damage by improving the antioxidant and anti-inflammatory capacity of the liver and maintaining the stability of the intestinal flora.