In end of life care anticholinergic medications are common to help with Death rattle as well as excessive oral secretions. Systemic anticholinergics can have many adverse side effects; a compounded drop used sublingually can help minimize these effects. Sublingual atropine drops for the treatment of pediatric sialorrhea.
https://www.ncbi.nlm.nih.gov/pubmed?term=20541902
