Table 2 Adverse events reported by the included studies
|  | Gao (2015) [40], (n = 202), n | Gao (2010) [38], (n = 106), n | Yasuda (2011) [34], (n = 171), n | Rowbotham (2012) [39], (n = 57), n | Total (n = 762), n (%) | |
|---|---|---|---|---|---|---|
Nausea | 21 | 32 | 24 | 68 | 9 | 154 (20.21%) |
Somnolence | 17 | 17 | 37 | 26 | - | 97 (12.73%) |
Dizziness | 17 | 16 | 10 | 30 | 4 | 77 (10.10%) |
Fatigue/malaise | 10 | 8 | 9 | 28 | 7 | 62 (8.14%) |
Constipation | 10 | 11 | 11 | 29 | - | 61 (8.01%) |
Decreased appetite | 11 | 11 | - | - | - | 22 (2.89%) |