Hi, I Am Using Nutrugain Powder It Is Causing Stomach

Hi,

I am using nutrugain powder it is causing stomach pain then I stopped it. now I am using nutrigain capsule from last 20 day, but I have not seen any improvement in my muscle, only my weigh increased by 5 kgs, Can you suggest some diet time table for me, I am a software Engineer my work hours are 9AM to 8PM and my height 187 cm, weight 64.8 Kgs also tell me how many day shall I continue nutrigain capsules and how to use nutrigain powder without getting any stomach pain.