Dose finding and constipation effect by the intake of a newly oligomeric condensation of lactic acids, LAC: a randomized, double blind, placebo-controlled study

INTERVENTION: Ingestion of food containing a newly oligomeric condensation of lactic acids daily for consecutive 4 weeks Ingestion of placebo(food containing a newly oligomeric condensation of lactic acid) for consecutive 4 weeks CONDITION: Healthy adult PRIMARY OUTCOME: Effect of bowel movement improvement up to 4 weeks after intervention SECONDARY OUTCOME: Dose dependency INCLUSION CRITERIA: 1) An age 30 years or older and up to 60 years, the age shall be the date of informed consent acquisition 2) Subjects with constipation (functional constipation) whose stool frequency is 10 or less in 2 weeks 3) Subjects who are judged as suitable for the study by the investigotor 4) Those who received sufficient explanation about the purpose of this study and agree to subject in an informed consent