Summary of randomised, double blind, placebo controlled trials of proton pump inhibitors in patients with chronic cough and pathological GOR on 24 hour oesophageal pH studies
| Study | No | Drug | Duration (months) | Improvement in cough | |
|---|---|---|---|---|---|
| Placebo | Omeprazole | ||||
| Ours et al2 | 17 | Omeprazole 40 mg twice daily | 3 | 0/9 (0%) | 1/8 (13%) |
| Kiljander et al3 | 21 | Omeprazole 40 mg/day | 2 | 13/21 (62%) | 16/21 (76%) |