My cat is loving cat grass. I used to give it to her when she was young... like under 5 years old. It wasn’t until I saw her searching around the corners of my place and trying to eat her own hair that I thought, okay you are missing something in your diet. She loves it and it also allows her to have a daily bowel movement. Was having constipation issues but not anymore! No, she doens’t throw it up because I don’t give her free access to the cat grass to consume as much as she wants. I give her a few good chomps and maybe 3 pieces make it down.. the others fall to the floor. I just love the look she gives when she sees it. It cost me $2.50 but I want to grow it myself. A green thumb I am not so this should be interesting.