Eucalyptus Radiata Ssp Radiata Eucalyptus radiata essential oil is a wonderful option for those with acute or chronic airway problems respiratory. It is decongestant, mucolytic, expectorant and anti-inflammatory. It also stimulates the immune system and is be a great antibacterial. Tasmanian Aborigines, where he is from original, they paid him veneration. Thanks to him they could cure the terrible tropical fevers that sometimes struck them.