My daughter had Calmare and while it did not work, it did not hurt her. I have been told it will not work if you have had ketamine. I am not sure how long after the ketamine has left your system you can try it. I do know the patient who filed the complaint. Her poor daughter has many issues and she has not responded well to anything, including ketamine infusions. I too have spoken to several people who have gotten total pain relief. Facebook seems to be a good way to contact them. Spero Pain Relief (or something like that). it is also called scrambler therapy on some sites.