Medical Developments International Limited provides emergency medical solutions in Australia, Europe, the United States, and internationally. The company operates through Pain Management and Respiratory segments. It manufactures and distributes Penthrox, a fast-acting trauma and emergency pain relief product used in hospital emergency departments, ambulance services, sports medicine, and for analgesia during short surgical procedures. The company also supplies respiratory products, including space chambers, peak flow meters, portable nebulizers, and silicone face masks to aid sufferers of asthma and chronic obstructive pulmonary disease. Medical Developments International Limited was founded in 1972 and is headquartered in Scoresby, Australia.