Plandu / Onion (Allium Cepa)- Ayurvedic Properties, Effects On Doshas & Dosage Description The ancient Indian Science named Ayurveda. Ayurveda provides the best natural approach to diseases and its cure. All the symptoms and investigation technique is different in each individual like we investigate the patient by Trividh Pareeksha that is darshan, sparsha, prashan, investigation of disease can be done by knowing the Nidan panchak that is nidana, poorva roopa, roopa, upshaya, samprapti and the patient’s sate can be understood