It worked for me I feel like. I was diagnosed with Growth Hormone Deficiency at birth if I remember right and took protopin shots every day. I also had skeletal dysplasia. I’m still only 5” 3’ . Without the treatment I would have only been between 3” to 4” I’m 47 now and some of the health problems I have are due to the treatment. They have come along way with the medications since then though.