Main components: Bornyl acetate, terpenes. Perfume note: Top/Middle. Interaction with other medications: None known. Contraindications: May increase bronchial spasms. Do not use in cases of bronchial asthma or whooping cough. Side effects: In some cases, it may cause irritation of the mucous membranes. Anecdotal information: Excellent for aerotherapy, it is used like any other essential oil derived from pine. Ingredient in A-CAM's Sinus & Cold synergy.