Salivary dissolution profiles of caffeine citrate in EC/TEC extrudates (n=3); (a) dissolution profile with mannitol: (CC2) with 3% mannitol, (CC7) with 5% mannitol, (CC8) with 10% mannitol; (b) dissolution profile with inorganic salts, (CC9) with 15% calcium carbonate, (CC10) with 15% magnesium oxide, (CC11) with 15% calcium phosphate.