Common side effects of Meclizine

Meclizine is pharmacologically classified as an antihistamine which is considered to be an antiemetic. It is not a drug but a generic ingredient and is available under a number of brand names.

It is used for treating and preventing nausea, vomiting, and dizziness caused by motion sickness. It is also used to prevent and treat vertigo which is extreme dizziness and results in the person losing his rational stability while his surroundings continuously spin around him.

It reduces the loss of balance caused by inner ear problems. It can also help with disorders of the inner ear that can lead to spinning and haphazard sensations.

Some medical professionals prescribe Meclizine because of its local anaesthetic effects and its depressant effect on the central nervous system and so; consequently, the fine hair located in the inner ear receives less stimulation. As a result, dizziness and nausea symptoms are reduced.



How it works

It is considered to be indulged in antiemetic (anti-nausea) and antispasmodic (anti-muscle spasm) activities. It suppresses the nervous system by blocking the action of the neurotransmitter acetylcholine. Medical professionals believe that Meclizine reduces vestibular stimulation, i.e., the part in the inner ear responsible for the vestibular disorder is less aggravated; hence symptoms may reduce.

It prevents nausea and vomiting by reducing activity in the part of the brain that controls nausea. Motion sickness is prevented by reducing the excitability of neurons in the motion and balance center (vestibular region) of the brain.



How to take Meclizine

To treat vertigo, patients are given 25-100 mg daily in a single dose or in separate doses. For motion sickness, it is to be taken one hour before the patient is to embark on a journey.

Meanwhile, children older than 12 years of age are to be given 12.5-50 mg of its dose orally before one hour of the journey. In the case of children younger than 12 years of age, its dosage, in terms of its safety, is not established.

In case of vertigo, children older than 12 years of age are given 25-100 mg daily in a single dose or separate doses every 6-12 hours.

It is to be assimilated strictly according to the prescribed orders by the doctor.


What are its side effects?

As these are chewable tablets, they must be chewed well before swallowing, and its dosage is in accordance to the patient’s medical condition. Exceeding the prescribed dosage can lead to severe side effects.

  • One commonly faced side effect of Meclizine is dry mouth.
  • It creates drowsiness, so it is not recommended to drink alcohol
  • It also aggravates dementia symptoms by causing confusion

Other side effects include:

  • Difficulty in breathing
  • Rashes and allergies
  • Swelling of the tongue, face, and lips
  • Tightens the chest
  • Diarrhea
  • Urinary retention (urine passes with difficulty)
  • Nausea
  • Blurred vision
  • Constipation
  • Itching
  • Fast heartbeat
  • A headache
  • Tiredness
  • Thickening of bronchial secretions
  • Overactive thyroid
  • Alzheimer disease
  • It is also associated with low blood pressure and heart palpitations.


Tagged under Antihistamine