Does anyone feel nauseous or have heavy stomach after drinking supplement drinks like Ensure plus and Diben?

Hi! I’m instructed to drink high calories supplement drinks so that I can gain weight fast… However I hate the taste of milk and thus not only do the taste of these drinks not sit right in my stomach, I always feel nauseous and horrible while drinking it T^T Adding cocoa powder into these drinks don’t help to cover the taste too omg

Anyone experience these symptoms while drinking such supplement drinks before? And are there any other alternatives beside smoothies or shakes to replace these drinks?

p.s The taste of banana and yogurt make me queasy too 😭