Film coated tablet

A film coated tablet, comprising:

• a tablet;
• a first film layer that coats the tablet and contains (a) a first water-soluble film base selected from hydroxypropyl methylcellulose, hydroxypropylcellulose, and a combination thereof and (b) an inorganic salt selected from the group consisting of potassium phosphate, sodium hydrogen carbonate, sodium chloride, and a combination thereof;
• and
• a second film layer that coats an outside of the first film layer and contains (a) a second water-soluble film base selected from hydroxypropyl methylcellulose, hydroxypropylcellulose, and a combination thereof and (b) a thickener selected from the group consisting of sodium alginate, xanthan gum, and a combination thereof,
• wherein the inorganic salt in the first film layer reduces a viscosity of the thickener contained in the second film layer.

A film coated tablet, comprising:

• a tablet;
• a first film layer that coats the tablet and contains (a) a first water-soluble film base selected from hydroxypropyl methylcellulose, hydroxypropylcellulose, and a combination thereof and (b) an inorganic salt selected from the group consisting of potassium phosphate, sodium hydrogen carbonate, sodium chloride, and a combination thereof;
• and
• a second film layer that coats an outside of the first film layer and contains (a) a second water-soluble film base selected from hydroxypropyl methylcellulose, hydroxypropylcellulose, and a combination thereof and (b) a thickener selected from the group consisting of sodium alginate, xanthan gum, and a combination thereof,
• wherein the first water-soluble film base has a 2% by mass aqueous solution viscosity at 20° C. of 100 mPa·s or less.