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. 2012 Jun 15;8:247–257. doi: 10.2147/NDT.S29891

Table 4.

Adverse events (AEs) in patients treated with first-generation antipsychotics (including depot) during the switch period

Preferred term, n (%) Switch period (first 28 days) Full treatment period (26 weeks)


Asenapine (n = 151) Olanzapine (n = 138) Asenapine (n = 151) Olanzapine (n = 138)
At least one AE 69 (45.7) 80 (58.0) 114 (75.5) 110 (79.7)
Somnolence 13 (8.6) 21 (15.2) 20 (13.2) 23 (16.7)
Nausea 7 (4.6) 3 (2.2) 8 (5.3) 7 (5.1)
Insomnia 7 (4.6) 5 (3.6) 17 (11.3) 13 (9.4)
Dizziness 5 (3.3) 5 (3.6) 8 (5.3) 7 (5.1)
Headache 5 (3.3) 5 (3.6) 12 (7.9) 12 (8.7)
Dyspepsia 5 (3.3) 2 (1.4) 6 (4.0) 3 (2.2)
Anxiety 5 (3.3) 1 (0.7) 12 (7.9) 11 (8.0)
Agitation 4 (2.6) 3 (2.2) 9 (6.0) 4 (2.9)
Dysgeusia 4 (2.6) 0 (0.0) 5 (3.3) 0 (0.0)
Sedation 4 (2.6) 4 (2.9) 5 (3.3) 5 (3.6)
Weight increase 2 (1.3) 17 (12.3) 9 (6.0) 43 (31.2)
Weight decrease 0 (0.0) 1 (0.7) 4 (2.6) 2 (1.4)
Back pain 1 (0.7) 4 (2.9) 1 (0.7) 7 (5.1)
Increased appetite 1 (0.7) 6 (4.3) 2 (1.3) 7 (5.1)
Paresthesia 1 (0.7) 3 (2.2) 1 (0.7) 3 (2.2)
Fatigue 0 (0.0) 3 (2.2) 3 (2.0) 3 (2.2)
Myalgia 0 (0.0) 3 (2.2) 0 (0.0) 3 (2.2)