Dear Hemant ji
There are many ayurveda medicine from which u can increase ur weight and i m telling u few compound from which u can increase weight without side effects..
Aswagandha churna
shavaryadi churna
Musli pak..
teekshna loah bhsasama
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all those medicine u can add together and same amount weight u can add sugar powder and take 7gm of that powder without boiled milk or cream,. before sleeping and in day time ..
take one month and i m sure about every month 2 kg weight..
regards
adwait