Chemical nature and pharmacological action of Ocimum sanctum

Abstract

Ocimum sanctum (Tulsi), a medicinal plant of the Lamiaceae family, is widely recognized for its rich phytochemical composition and diverse pharmacological properties. Its chemical nature is characterized by the presence of essential oils such as eugenol, methyl eugenol, and linalool, along with phenolic compounds like rosmarinic acid and flavonoids including orientin and vicenin. These bioactive constituents contribute significantly to its strong antioxidant, antimicrobial, and anti-inflammatory activities. Pharmacologically, Ocimum sanctum exhibits broad-spectrum antimicrobial effects by disrupting microbial cell membranes, while its anti-inflammatory action involves inhibition of cyclooxygenase pathways. Additionally, it demonstrates adaptogenic properties by modulating stress responses, along with antidiabetic, immunomodulatory, and cardioprotective effects. The synergistic interaction of its phytochemicals makes Tulsi a potent therapeutic agent with significant applications in traditional and modern medicine.