Hi

If you went weight gain so you have to take a mass gainer and multivitamin and irfan aapko high protein diet with complex carbs and fibers lena hai..

Hi Irfan  do weight training take 5-6 time meals and Mass Gainer xxl

https://www.healthkart.com/sv/muscleblaze-mass-gainer-xxl/SP-33002?navKey=VRNT-62363&ac_sel=MuscleBlaze%20Mass%20Gainer%20XXL%2C%20%20Chocolate%20%206.6%20lb%20

Multivitamin

https://www.healthkart.com/sv/muscleblaze-mb-vite-multivitamin/SP-23389?navKey=VRNT-50602&ac_sel=MuscleBlaze%20MB-VITE%20Multivitamin%2C%20%20Unflavoured%20%2060%20tablet(s)%20

Irfan,

You should go for a mass gainer first which cointain protein:carb should be 1:5  like ON Serious Mass, DYMATIZE Super mass gainer, ULTIMATE NUTRITION  Muscle juice, MUSCLEBLAZE XXL, TWINLAB suoer gainer fuel etc. also have six healthy meals in a day and hit your gym minimum 5 days in a week with heavy weight and just 10-12 reps per set.