Fycompa’s label has a black box warning noting that some people taking the drug have undergone serious psychiatric and behavioral changes. These events occurred in people who had no history of such issues, as well as people who had such a history. The psychiatric changes included mood changes like euphoric mood, anger, irritability, aggression, belligerence, agitation, and anxiety, as well as psychosis (acute psychosis, hallucinations, delusions, paranoia) and delirium (delirium, confusional state, disorientation, memory impairment). Behavioral changes included physical assault and homicidal ideation and/or threats.[2]
Other serious side effects include suicidal thoughts or behavior (like all anti-epileptic drugs), dizziness and gait disturbance, somnolence and fatigue, risk of falls, and increased risk of seizures if the drug is quickly withdrawn.[2]
In clinical trials, dizziness, somnolence, vertigo, aggression, anger, loss of coordination, blurred vision, irritability, and slurred speech were the side effects that most commonly led people to leave the trial.[2]
Perampanel is liable to be abused; very high doses produced euphoria responses similar to ketamine, although subjects liked it less and had experienced it more negatively than ketamine; it produced dissociative effects similar to ketamine.[2] It is designated as a Schedule III controlled substance by the Drug Enforcement Administration.[2] A study of dependence in rats found withdrawal symptoms when the drug was removed; dependence in humans wasn't studied well enough to make generalizations as of April 2016.[2] There is limited experience with overdose.[2]
Lyder ikke just særligt apetitligt at indtage større mængder af, selvom det kunne give en smule eufori.
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