आयुर्वेदनि गोजाम बिजाब चरक संहितायाव सानाय खारहोग्रा मुलिफोरनि सायाव गोबां दंफांफोरनि फोरमायनाय दङ ।
In Charak Samhita , the ancient treatise of Ayurveda , there is description of many plants as painkillers .