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Cinnarizine is an antihistamine and calcium channel blocker of the diphenylmethylpiperazine group. [5] It is prescribed for nausea and vomiting due to motion sickness [6] or other sources such as chemotherapy, [7] vertigo, [8] or Ménière's disease. [9] Cinnarizine is one of the leading causes of drug-induced parkinsonism. [5]
"Treatment of vertigo due to acute unilateral vestibular loss with a fixed combination of cinnarizine and dimenhydrinate: a double-blind, randomized, parallel-group clinical study". Clin Ther . 26 (6): 866– 77.
Cyclizine, sold under a number of brand names, is a medication used to treat and prevent nausea, vomiting and dizziness due to motion sickness or vertigo. [2] It may also be used for nausea after general anaesthesia or that which developed from opioid use. [2] [3] It is taken by mouth, in the rectum, or injected into a vein. [3] [4]
Antihistamines are drugs which treat allergic rhinitis, common cold, influenza, and other allergies. [1] Typically, people take antihistamines as an inexpensive, generic (not patented) drug that can be bought without a prescription and provides relief from nasal congestion, sneezing, or hives caused by pollen, dust mites, or animal allergy with few side effects. [1]
Meclizine is effective in inhibiting nausea, vomiting, and dizziness caused by motion sickness. [10] The drug is safe for treating nausea in pregnancy and is a first-line therapy for this use. [11] [12] Meclizine may not be strong enough for especially sickening motion stimuli, and second-line defenses should be tried in those cases. [13]
Hydroxyzine, sold under the brand names Atarax and Vistaril among others, is an antihistamine medication. [8] It is used in the treatment of itchiness, anxiety, insomnia, and nausea (including that due to motion sickness). [8]
Symptomatic treatment with antihistaminics such as cinnarizine, however, can be used to suppress the symptoms of vestibular neuritis while it spontaneously regresses. [27] Prochlorperazine is another commonly prescribed medication to help alleviate the symptoms of vertigo and nausea.
As the article states, cinnarizine is a CNS depressant, that is, it has antihistaminic, antiserotonergic, antidopaminergic effects. How strong, you ask? Strong enough not to be approved. One example: the usual dosage is supposed to be 2-3 tablets a day. Here I will describe effects on a test subject at a dose of 2 tablets a day.