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These side effects are serious and some of them are permanent, and many remain a crucial concern for companies and healthcare professionals and substantial efforts are being encouraged to reduce the potential risks for future antipsychotics through more clinical trials and drug development.
Hydroxyzine works by blocking the effects of histamine. [9] It is a first-generation antihistamine in the piperazine family of chemicals. [8] [4] Common side effects include sleepiness, headache, and dry mouth. [8] [9] Serious side effects may include QT prolongation. [9] It is unclear if use during pregnancy or breastfeeding is safe. [8]
The death of a loved one or a stressful life event can be enough to cause a nightmare but conditions such as post-traumatic stress disorder and other psychiatric disorders have been known to cause nightmares as well. [14] If the individual is on medication, the nightmares may be attributed to some side effects of the drug.
This use of diphenhydramine has been criticized for a number of reasons, ranging from ethical to safety concerns, [25] but also due to the risk of diphenhydramine's paradoxical reaction, which induces hyperactivity and irritability. [26] This phenomenon can also be observed in adults who use the medication as a sleep aid.
The effects of the brain activity can interfere with the REM (rapid eye movement) part of sleep, where the majority of dreams and nightmares occur, which is around 90 minutes into sleep. REM is ...
Cetirizine is a second-generation antihistamine used to treat allergic rhinitis (hay fever), dermatitis, and urticaria (hives). [5] It is taken by mouth. [6] Effects generally begin within thirty minutes and last for about a day. [6]
Doxylamine is also a potent anticholinergic, meaning that it causes delirum at high doses—i.e., at much higher doses than recommended. [8] (Specifically it is an antagonist of the muscarinic acetylcholine receptors M 1 through M 5.) These sedative and deliriant effects have in some cases led to using the drug recreationally.
If a fearful dog runs outside like that, they can become lost and data from the ASPCA has found loud noises like fireworks or thunderstorms are the cause of nearly 1 in 5 lost pets.