Comparison 1. Bismuth subsalicylate versus placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Clinical response	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
2 Histological response	1		Risk Ratio (M‐H, Fixed, 95% CI)	Totals not selected
3 Adverse events	1	9	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4 Withdrawals due to adverse events	1	9	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
5 Serious adverse events	1	9	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]