Gampaha Wickramarachchi Kantakari Paniya is a traditional Ayurvedic herbal formulation originating from Sri Lanka. It primarily contains Kantakari (Solanum xanthocarpum), a herb known for its respiratory benefits. Kantakari Paniya is prepared by boiling Kantakari with other herbs like ginger and black pepper, then strained to create a potent tonic. It is used to alleviate respiratory issues such as cough, asthma, and bronchitis, while also promoting immunity and overall health.