Carica papaya leaves have been used in folk medicine for centuries. In addition to the nutritional value of its fruit, the leaves of C. papaya possess medicinal properties and are widely used in traditional medicines. This study was conducted to determine the effect of C. papaya leaves extract capsules (CPC) in acute febrile illness with thrombocytopenia. An observational, prospective, uncontrolled, open label, single centre study in Indian patients. Total 80 patients were enrolled in the study. These subjects were randomized into two groups of 40, including the control and intervention groups (received two CPC three times daily). The result showed that CPC had significant increased the platelet count (p<0.05) and maintained stability of hematocrit in the normal level. Carica papaya leaf extract could be used as an additional or as a complementary drug in acute febrile illness patients with thrombocytopenia; it accelerates the increase in the platelet count and shorten the hospitalization thereby reducing the cost of hospitalization significantly.