On last update no relevant published data on breastfeeding were found. Because of essential oil toxicity its use is not recommended except with of an occasional and moderate manner. Produces a change in odour and flavour of milk that may cause rejection by the infant. When topically used it is safe while breastfeeding provided it is not applied on the nipple. Leaves of tree are used. Contains essential oil (Eucalyptol), tannins, terpenes, flavonoids, phenolic acids. Suggested properties (not clinically tested): Expectorant, Mucolytic, Anti-septic. Eucalyptol is neurotoxic and may induce seizures. An over-dosing is potentially lethal. Not indicated for children under 4 years old.