Bergamot (Citrus bergamia)
The effect of bergamot orange essence on anxiety, salivary cortisol, and alpha amylase in patients prior to laparoscopic cholecystectomy: A controlled trial study
Cedarwood (Cedrus deodara)
Autonomic responses during inhalation of natural fragrance of Cedrol in humans
Clary Sage (Salvia sclarea)
Pain relief assessment by aromatic essential oil massage on outpatients with primary dysmenorrhea: a randomized, double-blind clinical trial
Eucalyptus (Eucalyptus globules)
Efficacy of cineole in patients suffering from acute bronchitis: a placebo-controlled double-blind trial
Fennel (Foeniculum vulgare)
Foeniculum vulgare Mill: A Review of Its Botany, Phytochemistry, Pharmacology, Contemporary Application, and Toxicology
Frankincense (Boswellia serrata)
A pilot, randomized, double-blind, placebo-controlled trial to assess the safety and efficacy of a novel Boswellia serrata extract in the management of osteoarthritis of the knee