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. 2008 Jan;23(1):13–20. doi: 10.1002/hup.884

Table 5.

AEs occurring in ≥5% of subjects

Variable Placebo 1.0 mg 1.75 mg 3.5mg
Somnolence 3 (12.5%) 5 (20.8%) 3 (12.5%) 10 (41.7%)
Fatigue 6 (25.0) 2 (8.3) 8 (33.3) 4 (16.7)
Dizziness 1 (4.2) 3 (12.5)
Nausea 3 (12.5)
Headache 1 (4.2) 2 (8.3)