I had surgery 4 years ago they removed a cyst size of a gulf ball. I have had pain in my knee since then they tried every treatment to help the pain nothing worked! After digging and reading on castor oil for a while I decided to give it a try! Yesterday was the first day in 4 years I woke up pain free!! I highly recommend it for anyone who has bad knee or in pain it’s good for a lot of things read up on it you won’t be disappointed.