The Vyadhikshmatwa is bala which does the virodhatwa of vyadhi bala & pratibandha of vyadhi which interns built the immunity against the pathogens. In classics the vaya is classified into 3 types mainly bala yavvana and vriddha. Again in bala 3 sub classification viz. kshirap, ksheeraannada & annada upto the age of shodasha varsha. In them apakwadhatu will be there by which proper immunity is not developed, which further lands into the invading of infections easily. To avoid recurrent infections in bala Prakaradi yoga has been explained, in Arogya Raksha Kalpadrumah, which consists of different combination of drugs with different anupana, dose, kala, yoga & benefits. Those consists of medhya, rasayana, rakshoghana & balya type of drugs upto to 12years of age. Here an attempt has been made to explore Ayurvedic immunization modalities to built the immunity which has been explained in Arogya Raksha Kalpadrumah.

Keywords: Immunity; Vyadhikshamtwa; Prakaradi Yoga.