THE PRESENT INVENTION AIMS TO PROVIDE AN AMINO ACID- CONTAINING GRANULE PREPARATION IMPROVED IN THE EASE OF TAKING MEDICATION THAN CONVENTIONAL PRODUCTS, WHICH DISINTEGRATES RAPIDLY.THE AMINO ACID-CONTAINING GRANULE PREPARATION OF THE PRESENT INVENTION CONTAINING GRANULES HAVING A MAXIMUM PARTICLE SIZE OF SUBSTANTIALLY NOT MORE THAN 1000 µM AND A BULK DENSITY OF NOT LESS THAN 0.57 G/ML MARKEDLY IMPROVES EASE OF TAKING MEDICATION WITHOUT IMPAIRING DISINTEGRATION PROPERTY, AS COMPARED TO CONVENTIONAL AMINO ACID-CONTAINING GRANULE PREPARATIONS.