From: Comparison of tolerability and efficacy of a combination of paracetamol + caffeine and sumatriptan in the treatment of migraine attack: a randomized, double-blind, double-dummy, cross-over study
Adverse events
Total
Treatments
PCF
SUM
N
%
0 (none)
125
47.3
69
52.7
56
42.1
1
72
27.2
32
24.5
40
30.1
2
15.1
18
13.6
22
16.5
3
10
3.9
4
2.7
6
4.5
14
5.3
8
6.4
5
0.8
1.6
0.4
0.7
264
100.0
131
133