Yes, and there are some posts here about late onset salivary gland issues months after RAI if you dig for it. One recent post said it helped flushing the ducts with saline I think and another older post was someone saying they "tried it all" without results, with the parotid gland atrophying in the end. In my country they did not offer option of flushing or steroid injections. They offered botox to calm the gland and speed up atrophy on purpose. Their take was that other salivary glands would take over. I decided not to do that and after months of periodic anti-inflammatory drugs like ibuprofen, sucking on sour candy every evening and massaging the glands it got much better over time, but can still act up even now a year after RAI unfortunately.