Pseudoaspidin is a phloroglucinol derivative isolated from ferns such as Dryopteris species. Traditionally used as an anthelmintic agent in folk medicine to treat intestinal parasites like tapeworms. It demonstrates antimicrobial activity against certain bacteria and fungi, with low to moderate potency, and has been studied for its potential to inhibit enzymes involved in inflammation. This makes it a candidate for natural product-based research in developing anti-inflammatory and antimicrobial agents for health products, including topical formulations.