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. 2008 Mar-Apr;13(2):103–110. doi: 10.1155/2008/903784

TABLE 4.

Incidence of most common adverse events related to study medication

Event Incidence, n (%)
CR tramadol SR diclofenac
Dizziness 15 (24.2) 12 (18.2)
Nausea 15 (24.2) 7 (10.6)
Constipation 13 (21.0) 10 (15.2)
Somnolence 11 (17.7) 5 (8.1)
Vomiting 9 (14.5) 3 (4.5)
Headache 7 (11.3) 1 (1.5)
Sweating 9 (14.5) 0 (0)
Abdominal pain 2 (3.2) 6 (9.1)

CR Controlled-release; SR Sustained-release