Lansoprazole Tablets Special Drug Use Surveillance Gastroesophageal Reflux Disease With Dyspepsia Symptoms

Completed

Brief Summary: To evaluate the efficacy of 4-week lansoprazole (Takepron) therapy for subjective symptomatic improvement in gastroesophageal reflux disease patients with dyspepsia symptoms

Detailed Description: This is a special drug use surveillance of lansoprazole (Takepron) with a 4-week observational period, designed to evaluate the efficacy in gastroesophageal reflux disease patients with dyspepsia symptoms (planned sample size, 15000).

The dosage regimen is as follows:

* For reflux esophagitis, the usual adult dosage is 30 mg of lansoprazole administered orally once daily for up to 8 weeks. For maintenance treatment of repeatedly recurring/relapsing reflux esophagitis, the dosage is 15 mg of lansoprazole administered orally once daily. If insufficient efficacy is observed, the dosage may be increased to 30 mg administered orally once daily.

* For non-erosive gastroesophageal reflux disease, the usual adult dosage is 15 mg of lansoprazole administered orally once daily for up to 4 weeks.

Recruitment & Eligibility

Inclusion Criteria

Patients with heartburn or acid regurgitation at the start of Takepron administration* , or patients without heartburn and acid regurgitation, but with endoscopic findings classified as Los Angeles grade A-D at the start of Takepron therapy.
Patients with symptoms of dyspepsia (i.e., postprandial fullness, early satiation, epigastric pain, epigastric burning, upper abdominal bloating, nausea/vomiting, or belching) at the start of Takepron administration* *These patients must have answered "never, " "sometimes/mild," "often/moderate," or "frequent/severe" on a 4-point scale questionnaire about subjective symptoms.

Exclusion Criteria

Patients who have taken any proton pump inhibitors (including Takepron) within 4 weeks before the start of Takepron administration
Patients taking antidepressants

Arm && Interventions

Group	Intervention	Description
Lansoprazole	Lansoprazole	Lansoprazole (Takepron), tablets, orally, once daily for up to 8 weeks. Reflux esophagitis: the usual adult dosage is 30 mg of lansoprazole. For maintenance therapy of repeatedly recurring/relapsing reflux esophagitis, the dosage is 15 mg of lansoprazole administered orally once daily. If insufficient efficacy is observed, the dosage may be increased to 30 mg administered orally once daily. Nonerosive gastroesophageal reflux disease: the usual adult dosage is 15 mg of lansoprazole administered orally once daily for up to 4 weeks.

Primary Outcome Measures

Name	Time	Method
Subjective Symptom Improvement Rate	Start of treatment and Week 4	Subjective symptoms were evaluated as "Disappeared," "Improved," "No change," "Worsened," or "Unclear." These categories were based on investigator's definitions. At Week 4, the rate of improvement (i.e. the frequency of an evaluation of "Disappeared" + "Improved") was calculated for each symptom. The percentage of participants with Improvement by symptom was reported.

Secondary Outcome Measures

Name	Time	Method
Frequency of Adverse Events (Adverse Drug Reactions)	4 Weeks	Adverse events observed during the observation period were collected by symptom. For adverse drug reactions, frequencies were tabulated by type and seriousness. Adverse events were defined as any unfavorable and unintended signs, symptoms or diseases temporally associated with administration of lansoprazole whether or not it was considered related to treatment. Among these, events that were considered as having a causal relationship with lansoprazole were defined as adverse drug reactions. The rate of participants with adverse events (adverse drug reactions) was reported.