It is best immunity booster for all types of infectious diseases, especially auto immune diseases where it increases body's self immunity boosting capacity, take 25 g of guduchi add in 400 ml of water boil it and reduce to 200 ml , filter and serve hot, sufficient for two adults.
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Educational small video clips below link
Plants of Ayurveda by Dr Shrinivas Patil
https://youtu.be/sQhXb6H_5KQ