Your doctor needs to get with it!!!! Naltrexone has been used for pain management since 2018. Its original purpose was to help drug addicts and alcoholics get through the withdrawal symptoms. If your doc hasn't already researched it and gotten back to you, it's time to change docs or at least send them a link to an article about Naltresone LDN protocol. BTW I also learned about gluteal tendinopathy during my quest to figure out why I am in so much pain, from the Cleveland Clinic website. Now I have a folder of links to articles and anecdotal reports and share it with whoever needs help. Gluteal tendinopathy is no joke, and is, for me at least, extremely painful and at times disabling. Oh, BTW I'm 72 years old and a very well-informed health care consumer. Good luck to you bunstuffer.