Patchouli Oil, an essential oil of Pogostemon cablin (Blanco) Benth was investigated for antimicrobial activity against a panel of ten human pathogenic bacteria and eight human pathogenic fungi using agar cup method and macrobroth dilution technique.The oil showed a significant antimicrobial activity against all tested organisms compared to standard antibiotic Ampicillin. The oil is more active against Gram positive than Gram negative bacteria. It shows good sensitivity against all human pathogenic strains of yeast and mold. Some pharmacological tests were carried out to evaluate...