In modern times, Thai scientists have made many significant contributions in various fields of study. For example, In chemistry, Krisana Kraisintu as known as the "Gypsy pharmacist". She developed one of the first generic ARV fixed-dose combinations and dedicated her life to making medicines more affordable and accessible. Her efforts have saved countless lives in Africa,GPO-VIR has now been chosen by World Health Organization as the first regimen treatment for HIV/AIDS patients in poor countries. In Thailand, this drug (GPO-VIR) is used in the national HIV/AIDS treatment programme, making it free of charge for 100,000 patients. while Pongrama Ramasoota, He discoveries production of therapeutic human monoclonal antibodies against dengue virus and the world's first Dengue fever medication, include DNA vaccine development for dengue and Canine parvovirus.