Composition
Tablets
Active ingredient:
betahistine dihydrochloride 24 mg;
Auxiliary substances:
MCC;
lactose (milk sugar);
citric acid monohydrate;
colloidal silicon dioxide (aerosil);
crospovidone;
talc;
magnesium stearate.
Pharmacological action
Synthetic analog of histamine. It is an agonist of H1-receptors of the inner ear vessels and an antagonist of H3 – receptors of the vestibular nuclei of the central nervous system. By direct agonistic action on the H1 receptors of the inner ear vessels, as well as indirectly through exposure to H3 receptors, it improves microcirculation and capillary permeability, normalizes endolymph pressure in the labyrinth and cochlea, and increases blood flow in the basilar artery.
It has a pronounced central effect, being an inhibitor of H3 – receptors of the vestibular nerve nuclei. Improves conduction in neurons of the vestibular nuclei at the level of the brain stem.
The clinical manifestation of these properties is a decrease in the frequency and intensity of dizziness, a decrease in tinnitus, and an improvement in hearing in the case of its decrease.
Pharmacokinetics
Suction and distribution
Absorbed quickly. Cmax is reached after 3 h. Plasma protein binding is low.
Deduction
It is almost completely excreted in the urine as a metabolite (2-pyridylacetic acid) within 24 hours. T1/2 – 3-4 hours.
Indications
- syndromes including dizziness and headache, tinnitus, progressive hearing loss, nausea and vomiting;
- treatment and prevention of vestibular vertigo of various origins;
- Meniere’s disease or syndrome.
Contraindications
-lactose intolerance, lactase deficiency or glucose-galactose malabsorption syndrome;
– children under 18 years of age (due to lack of data);
— pregnancy (due to lack of data);
— lactation period (due to lack of data);
— hypersensitivity to any of the components of the drug.
With caution, the drug should be prescribed for peptic ulcer of the stomach or duodenum (in the anamnesis), pheochromocytoma, bronchial asthma.
Side effects
Gastrointestinal disorders, allergic reactions from the skin (skin rash, itching, urticaria), angioedema.
How to take, course of use and dosage
Inside, while eating. 1/2-1 tablet 3 times a day.
Improvement is usually noted at the beginning of therapy.
A stable therapeutic effect occurs after two weeks of treatment and may increase over several months of treatment.
Long-term treatment. The duration of taking the drug is selected individually.
Overdose
Symptoms: Â nausea, vomiting, convulsions.
Treatment: Â gastric lavage, taking activated charcoal, symptomatic therapy.
Special instructions
Patients with a history of gastric or duodenal ulcer, pheochromocytoma, or bronchial asthma should be prescribed the drug under regular medical supervision.
Influence on the ability to drive motor vehicles and manage mechanisms
Betahistine has no sedative effect and does not affect the ability to drive a car or engage in activities that require rapid psychomotor reactions.
Storage conditions
 In a dark place, at a temperature not exceeding 25 °C.
Shelf life
2 years
Active ingredient
Betahistine
Conditions of release from pharmacies
By prescription
Dosage form
Tablets
Description
For adults as prescribed by a doctor, For adults
Indications
Cerebrovascular accident, Meniere ‘s Disease
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