Endpoint

Ranitidine HCl 150 mg BID n (%)

Ranitidine HCl 300 mg OD or BID n (%)

Ranitidine HCl 300 mg OD n (%)

24 hours heartburn free days

1161 (72.82)

511 (68.49)

52 (70.27)

7 consecutive heartburn-free days

1067 (66.89)

415 (55.63)

39 (52.70)