I think the metformin gave me low blood sugar when I was there, because I didn't think to bring lunch along and all I had eaten was a small bowl of oatmeal in the morning. I suddenly started feeling hot and shaky and nauseous so I ran across the street from his apartment to the store to get something to eat then once I ate I felt better. I was worried because for a second I thought I was gonna puke in the store or at his place.