Investigations of the antimicrobial potential of a number of other Prostanthera species have given interesting results. The essential oils of P. incisa and P. ovalifolia demonstrated a fairly broad range of antibacterial activity.

Prostanthera ovalifolia R.Br. Lamiaceae Alpine anise bush, Oval leaf Mintbush, Purple mintbush.

Prostanthera ovalifolia R.Br. Lamiaceae Alpine anise bush, Oval leaf Mintbush, Purple mintbush. Woody shrub. Distribution: Australia. Minty flavoured leaves used in jams and jellies. Various essential oils are produced from commercially grown P. ovalifolia (cis-dihydroagarofuran, kessane, 1,8-cineole which is also known as eucalyptol, p-cymene,) and P. cuneata also contains eucalyptol. Concentrations of essential oils in the plants vary according to the clonal variety, growing conditions and time of year. Aboriginal peoples used Prostanthera leaves in medicinal ointments and washes, but one species, P. striatiflora, was used to poison waterholes to kill visiting emu (Hegarty, 2001).