quote:

..... the vast majority of things you need to help you through feeding, gels and mouth washes are available via NHS prescription.

If you register and obtain a £32 NHS Certificate you can get most things for free which includes, Ensure, packs of 27 at a time, a full range of products for Xerostomia [dry mouth]
(Bioxtra Moisturising Gel; Glandosane; Luborant; Biotene Oralbalance Dry Mouth Saliva Replacement Gel; Saliva Orthana; SST lozenges, Saliveze; Salivix).

Just ask your GP and get a three month certificate and stock up!