Table 1. Actions and side effects of the main drugs cited in this work.

Drug	Actions	Side effects
Lithium	Mood stabilizer. Reduced gambling thoughts and behaviors in bipolar disorders 19	Confusion, somnolence
Serotonin reuptake inhibitors	Decreased pursuit of rewards, hypersexuality, and aggression, 20 improved social and occupational functioning 19	Dry mouth, diarrhea, nausea, loss of appetite, headache, somnolence, insomnia, tremor, agitation, sexual dysfunction, asthenia, dizziness, anxiety, nervousness 2 , 20
Levodopa	Dopamine agonist 19	Dyskinesia, cardiac irregularities, orthostatic hypotensive episodes, psychotic episodes, nausea, depression, urinary retention 20
Rotigotine	Non-ergot dopamine agonist 8	Hypotension, nausea, vomiting, somnolence, tachycardia, and dystonia 8
AChEIs	Acetylcholinesterase inhibitors 12 , 13	Nausea, vomiting, diarrhea, anorexia, insomnia, fatigue, loss of appetite, weight loss, abdominal pain 2 , 20
Clonazepam	Hypnotic and anxiolytic	Drowsiness, 2 , 4 , 21 behavioral changes, imbalance, incoordination, dizziness, 2 , 21 tiredness, confusion, memory loss, 4 somnolence, gastrointestinal complaints 5 , slurred speech, cognitive impairment, depression 21
Levetiracetam	Decreased amplitude of cortical somatosensory evoked potentials 8	Behavioral changes, irritability, fatigue, loss of appetite, dizziness, headache 2
Botulinum toxin	Acetylcholine antagonist	Excessive weakness 2