Lactobacillus Casei Strain Shirota Fermented Milk for Alleviating Hard Stools in Vietnam

Inclusion Criteria: * Female or male, aged between 18 to 60 years. * Aware of producing hard or lumpy stools (BS score of 1 or 2) frequently. * Produce hard or lumpy stools (BS score of 1 or 2) ≥ 25% of bowel movements during 2 weeks of screening period. * Voluntarily provide written informed consent to participate in the study. Exclusion Criteria: * Subjects whose constipation symptoms are caused by primary organic disease of the colon or pelvic floora or which, in the Investigator's opinion, is caused by medication (e.g. morphine, codeine). * Subjects with metabolic disorders, neurological disorders or any significant diseases or concomitant condition (e.g. abdominal/gastrointestinal surgery) that, in the investigator's opinion, would interfere with participation in the study. * Subjects with any known allergic reactions to any ingredients of milk. * Pregnant or nursing (breast-feeding) women. * Subjects who are unable to refrain from or anticipate the use of any medication (including laxatives, diuretics, prescription and non-prescription drugs, vitamins and herbal supplements), except for paracetamol, oral contraceptives, or hormonal replacement therapy from 2-week before the initiation of screening of subject BS score to the end of the study. * Subjects who are unable to refrain from or anticipate the use of any probiotics, prebiotics or yogurts from 2-week before the initiation of screening of subject BS score to the end of the study. * Participation in another study with Investigational product within 2 months prior to this study. * Drug or alcohol abuse.