Has anyone tried Joven therapeutic nutrition powder?

I am now one year after radiation treatment for stage 3 tonsil cancer. I am still struggling with dry mouth, slight irritation, and mucous. My radiology oncologist gave me sample packs of Juven which are fruit flavored packs made by Ensure that helps promote wound healing. Have any of you tried this product, and if so, how effective is it and is it not too late after 1 year to try it?