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. 2015 Sep 15;8:623–636. doi: 10.2147/JPR.S83930

Table 2.

Adverse events occurring in ≥5% of patients

Open-label titration period – safety analysis set
Double-blind treatment period – full analysis set
Opioid-naïve (n=189) Opioid-experienced (n=200) Placebo (n=147) HydrocodoneER (n=146)
Patients with ≥1 AE, n (%) 111 (59) 116 (58) 91 (62) 93 (64)
AEs with incidence ≥5%, n (%)
 Nausea 39 (21) 31 (16) 9 (6) 19 (13)
 Headache 17 (9) 26 (13) 8 (5) 10 (7)
 Back pain 0 3 (2) 7 (5) 1 (<1)
 Constipation 28 (15) 27 (14) 7 (5) 19 (13)
 URTI 3 (2) 1 (<1) 7 (5) 7 (5)
 Vomiting 15 (8) 10 (5) 5 (3) 9 (6)
 Dry mouth 9 (5) 6 (3) 2 (1) 2 (1)
 Fatigue 8 (4) 10 (5) 2 (1) 1 (<1)
 Dizziness 14 (7) 8 (4) 1 (<1) 3 (2)
 Pruritus 16 (8) 4 (2) 1 (<1) 3 (2)
 Somnolence 23 (12) 22 (11) 1 (<1) 3 (2)

Note: All values are number of patients (percentage of patients).

Abbreviations: AE, adverse event; ER, extended release; URTI, upper respiratory tract infection.