The present invention concerns a non-toxic composition in the form of buccal tablets, sublingual tablets or lozenges, which comprises a combination of active agents including one or more aldehyde-binding cysteine compound(s) selected from the group of L-and D-cysteine, N-acetyl cysteine, and the pharmaceutically acceptable salts thereof,and xylitol, which composition further comprises one or more non-toxic additives that include one or more aromatic agents as well as one or more fillers or binders or both,and optional further additives.