Do you recommend Hyaluronic Acid Therapy for vaginal dryness in female patients post pelvic RT?

I do not. Not saying you shouldn’t though. I recommend coconut oil which can be used with a vaginal dilator, for intercourse or purely for hydration. If ineffective, I will refer back to gynecology. There may be a role for topical estrogen depending on the cancer histology.

I am not aware of any data on Hylauronic Acid as assisting with vaginal dryness.

Happy to be educated. Otherwise, I agree fully with Dr. @Dr. First Last.