In Nigeria, the neem tree is known by many names. The Hausa call it Dogon yaro. In Yoruba communities it is igi oba. In Igbo, osisi awusa. Every ethnic group had a name for it and a body of knowledge about its properties developed over generations of careful observation.

Modern pharmacological research has identified over 400 biologically active compounds in the neem tree. The most significant is azadirachtin, with demonstrated antimalarial, antiparasitic, anti-inflammatory, and antiviral properties. What African communities discovered through centuries of observation, modern science has spent decades confirming.