After reading many of the cat constipation posts here, I tried 1/4 teaspoon of virgin coconut oil and 1/4 teaspoon apple cider vinegar mixed in her wet food. She had no trouble with it and ate it up. Within a half hour she was pooping good. This was after four days of having trouble. I have used it a few more times when she needs it but she has been pretty regular since. Next time I will try either one or the other and check the results. She is a 19 year old Main Coon.