Ayurveda has explained the concept of Rasayana (Rejuvenating Therapy), a classical medication mainly aiming at protection of the individual's health and secondarily at pacification of disease. Different types of Rasayanas are described in Samhitas for specific purposes. Improvement of Medha i.e., intelligence is one of the benefits of consumption of Rasayana. Medhya Rasayana is one of the types of Rasayana which majorly deals with enhancement of Medha i.e., intelligence along with other benefits of Rasayana. The Medhya effect of Guduchi Rasayana is studied with the help of Intelligent Quotient i.e., IQ. The proper assessment of IQ is done with the help of Catell & Catell Intelligence scale. The normal functioning of Medha mainly depends on Pitta Dosha. Pitta in its normal state is Katu Rasatmak (Pungent taste) and related with the Satva Guna of Manas. Guduchi, being Katu-Tikta Rasatmak and Madhura Vipaka Dravya, purifies the Pitta Dosha and enhances Satva Guna by removing Tamas. Tikta Rasa has been described as Medhya by Vagbhatacharya. This study attempted to analyze any changes in IQ due to consumption of Guduchi Rasayana in different Dehaprakruti.
