From:  Role of cyproheptadine in chronic urticaria not controlled with second-generation antihistamines: a retrospective study

 Distribution of patient-reported adverse events in both groups.

Adverse drug reactionGroup A (n = 48)Group B (n = 55)p-value
Nausea and vomiting4 (8.3%)5 (9.1%)0.18
Abdominal pain3 (6.3%)5 (9.1%)0.23
Daytime sedation30 (62.5%)12 (21.8%)0.02
Dry mouth15 (31.3%)18 (32.7%)0.54
Weight gain (> 10%)5 (10.4%)1 (1.8%)0.04
Blurred vision10 (20.8%)8 (14.5%)0.13

The totals exceed the number of patients because individual patients could report more than one adverse event.