Abnormal dreams, nightmares, sleeplessness, sleepwalking, anxiety or depression are some of the side effects that patients taking montelukast (Singulair and its generic versions) may experience. These side effects are known and appear on the leaflet of this medication indicated in the treatment of asthma.
“However, the establishment of a link between the occurrence of neuropsychiatric disorders in certain patients and the taking of this drug is sometimes late” underlines the ANSM. The latter therefore recalls the neuropsychiatric risks associated with taking this drug.
The different types of side effects
- Infrequent : abnormal dreams, nightmares, insomnia, sleepwalking, anxiety, agitation (including aggression or hostile behavior), depression, psychomotor hyperactivity (including irritability, feverishness, tremors)
- Rare: disturbance in attention, memory impairment, tic
- Very rare: hallucinations, disorientation, suicidal ideation with suicide attempts, obsessive-compulsive symptoms, dysphemia
A letter was sent to healthcare professionals reminding them of the possible appearance of these side effects. These usually regress after stopping treatment.
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