Verbena- exotic essential oil is used in aromatherapy as a carminative and antispasmodic for symptomatic relief of digestive discomfort. Litsea citrata (Litsea cubeba Topical (Adults): Mix 4 drops in 1/2 teaspoon (2.5ml) of vegetable oil; apply to the affected area 3 times a day. Inhalation: Add 4 to 12 drops to a bowl of hot water or a diffuser. Inhale slowly and deeply for 5-10 minutes.