<p>Due to erratic climate change, vector-borne diseases started flaring up from the second half of the last decade. Siddha medicine has been used as a public health tool to effectively manage chikungunya and dengue in the epidemics that happened in 2008 and 2016. Tamil Nadu government has made enormous efforts to control vector-borne diseases. Due to which morbidity and mortality due to vector borne diseases came down compared with other states. Two official Siddha formulations, namely Kabasura Kudineer Chooranam and Nilavembu Kudineer Chooranam and novel herbal formulation – JACOM, are used to combat vector-borne diseases. These decoctions lack an evidence base as a formulation. Screening has been done to check the efficacy of the formulation in inhibiting neuraminidase. Neuraminidase inhibition assay was performed to determine the activity of Siddha formulations. The Kabasura Kudineer Chooranam, Nilavembu Kudineer Chooranam and JACOM showed excellent inhibitory activity. The Kabasura Kudineer and Nilavembu Kudineer and JACOM aqueous extract showed maximum neuraminidase inhibition of 80.35%, 91.78% and 87.97%, respectively.</p>