topical olive oil with tomatoes

You could try mixing some Lycopene Alcohol Free Liquid Extract with extra virgin olive oil to see if it helps. Lycopene is naturally in tomatoes.

"The topical application of lycopene-enriched virgin olive oil improved xerostomia-related symptoms significantly (but not salivary flow rate) in patients with drug-induced xerostomia.

https://www.ncbi.nlm.nih.gov/pubmed/27550537 Tweet