Just once so far, but there have been a couple of times I was threatened with it and probably should have gone. The time I went IP saved my life. It was actually a good experience for the most part even though the bed was hard and I wasn't thrilled to be locked up. There were groups and individual therapy, activities, good nurses and decent food. I'd always been terrified of the hospital but I'm glad I went and found out it's not anywhere near as awful as I'd imagined. They kept me safe, and I was able to rest and leave my stressful life outside the walls of the hospital for a little while. Well worth it.