PROBLEM TO BE SOLVED : To provide solid preparations in which drug stability is maintained and generation of the spot on a tablet surface is suppressed, in solid preparations containing 4-aminobutanoic acid analog represented by gabapentin and pregabalin.SOLUTION : Provided is a solid preparation produced by a step of wet-granulation from an emulsified liquid containing γ-aminobutanoic acid analog represented by formula (I), a hardened oil, and glycerine fatty acid ester, and a step of drying, as well as by mixing and tableting with an additive a granule in the state of being coated with a hardened oil and glycerine fatty acid ester.SELECTED DRAWING : NoneCOPYRIGHT : (C)2019, JPO&INPIT