The BioXtra three-phase program is composed of complementary oral hygiene products scientifically formulated by specialists to help you reinforce the natural protective system of salivaIndispensable for a healthy and balanced oral environment, BioXtra does not contain alcohol, strong aromas or abrasive agents. BIOXTRA mouthwash reinforces the action of toothpaste. for people with dry mouth, suffering from xerostomia secondary to: certain medications (antidepressants, neuroleptics, antiparkinsonian drugs), vitamin deficiencies, elderly people, stress, mood disorders, diabetes, radiotherapy.3-step program BioXtra is composed of complementary oral hygiene products scientifically formulated by specialists to help you reinforce the natural protective system of saliva.