A.S Saliva Orthana Oral Moisturising Lozenges A.S Saliva Orthana Oral Moisturising Lozenges relieve minor cases of dry mouth (xerostomia), or can be used in combination with the spray for more severe cases. A.S Pharma Saliva Orthana is the only natural mucin-based saliva substitute. It is gluten free, has no reported side effects & is suitable for children & pregnant women.