: We assessed the overall ef cacy and safety of a long-acting muscarinic antagonist LAMA added to an inhaled corticosteroid ICS and long-acting beta-2 agonist LABA as a combination therapy LAMA ICS/LABA versus LAMA monotherapy in patients with chronic obstructive pulmonary disease COPD . The overall ef cacy and safety of LAMA ICS/LABA versus LAMA in patients with COPD were assessed by a meta-analysis of randomized controlled trials RCTs . We identi ed LAMA ICS/LABA RCTs by searching PubMed, Scopus, and the Cochrane Library database. Primary efficacy outcomes were changes in forced expiratory volume in 1 second FEV 1.0 from baseline. Incidences of all adverse events AAEs were the primary safety outcomes. Pooled estimates are presented as mean differences MDs or risk ratios RRs with 95 confidence intervals CIs . Analyses included intention-to-treat cases. Three LAMA ICS/LABA RCTs met the criteria for inclusion in this study. The MD, RRs, and their 95 CIs regarding changes in FEV 1.0 for LAMA ICS/LABA compared with those of LAMA were 0.08 0.04 to 0.13 ; RRs and 95 CIs for AAEs of LAMA ICS/ LABA compared with those of LAMA were 1.03 0.82 to 1.29 . Conclusions : Pulmonary function was signi cantly improved in the LAMA ICS/LABA group with no signi cant increase in AAE risk. These results provide important analysis regarding the overall ef cacy and safety of LAMA ICS/LABA in patients with COPD.