Medical Developments International has penned deals with US giants Walmart and Kmart to sell several of its products that help patients manage asthma and chronic obstructive pulmonary disease.

MVP's main product is Penthrox, or the "green whistle", an emergency pain-relief device developed in Australia and used by surf clubs, ambulances, defence forces and sporting clubs for 30 years. However, in 2016 the biotechnology company received approval from the United States Food and Drug Administration to sell a range of its Anti-Static Space Chamber devices, which can be used to help manage asthma and COPD.