Study With Two Different Doses of Desmopressin Orally Lyophilisate Tablet With Nocturnal Enuresis

Inclusion Criteria: * Diagnosed nocturnal enuresis with reduced nighttime urinary osmolality * Age 6 or above but under 16 regardless of gender * Out-patient * Had 10 or more wet nights during the 14-day baseline period and at least 4 wet nights in each respective week * Deemed healthy by the investigator * Able to agree to and comply with fluid-intake restriction during the clinical trial and matters specified in the clinical trial protocol * Consent from the pediatric patient's legally acceptable representative * Demonstrate an understanding about this clinical trial after receiving an explanation corresponding to the prospective subject's intelligibility * Show no possibility of being a nursing mother or pregnant, or becoming pregnant * If under drug or medical therapy other than Desmopressin for treating nocturnal enuresis: able to discontinue such treatment Exclusion Criteria: * Suffer from enuresis with an underlying disease * Participated in another clinical trial within six months preceding consent * Used an intranasal Desmopressin in the past * Presently undergoing a systemic antibiotic treatment, a treatment with an antidiuretic or a drug that affects urinary concentration, or a drug or medical therapy for overactive bladder * Have an anomaly or a disease that may affect the oral absorption of drug products * Hard to get cooperation from subject by school refusal, punishment or bullying * Deemed by the investigator to be inappropriate to participate in this trial * Unable to be placed on water-intake restriction starting from two hours before bedtime * Evidence of hepatic, renal, cardiac, or pulmonary dysfunction