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. Author manuscript; available in PMC: 2014 Aug 2.
Published in final edited form as: Addiction. 2008 Aug;103(8):1381–1390. doi: 10.1111/j.1360-0443.2008.02273.x

Table 3.

Adverse events reported by at least 5% of participants during open-label treatment.

Adverse event All Men Women P-value OR (CI) Male : female
Insomnia 58% 54% 64% 0.08 1.5 (0.9, 2.4)
Headache 37% 30% 46% 0.004 2.0 (1.2, 3.2)
Skin rash 19% 17% 22% 0.27 1.4 (0.8, 2.5)
Vivid dreams 14% 12% 17% 0.29 1.4 (0.7, 2.7)
Dry mouth 13% 15% 10% 0.20 0.6 (0.3, 1.3)
Anxiety 13% 11% 16% 0.19 1.6 (0.8, 3.1)
Nausea 7% 5% 11% 0.06 2.3 (0.9, 5.5)
Dizziness 6% 4% 7% 0.27 1.7 (0.6, 4.6)
Racing heart 5% 3% 8% 0.06 2.6 (0.9, 7.4)

No adverse events were reported during extended treatment by as many as 5% of participants. CI: confidence inerval; OR: odds ratio.