The invention relates to addition salts of sulfonic acids and galantamine as well as hydrates or solvates thereof in a crystalline or an amorphous form. The invention also relates to a method for the preparation of said salts as well as to their use for therapeutic purposes.The invention relates to addition salts of sulfonic acids and galantamine as well as hydrates or solvates thereof in a crystalline or an amorphous form. The invention also relates to a method for the preparation of said salts as well as to their use for therapeutic purposes.